CN105897195B - High dynamic range burst mode trans-impedance amplifier - Google Patents
High dynamic range burst mode trans-impedance amplifier Download PDFInfo
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- CN105897195B CN105897195B CN201610362399.7A CN201610362399A CN105897195B CN 105897195 B CN105897195 B CN 105897195B CN 201610362399 A CN201610362399 A CN 201610362399A CN 105897195 B CN105897195 B CN 105897195B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
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- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/42—Modifications of amplifiers to extend the bandwidth
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
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Abstract
High dynamic range burst mode trans-impedance amplifier.It is related to the trans-impedance amplifier of four kinds of burst modes with high dynamic range.That there are low frequencies in order to solve the problems, such as existing trans-impedance amplifier is smaller by frequency and dynamic range, sensitivity is low.The collector of No. four triodes of the present invention is connected with the power supply of passive optical network local side receiver；The emitter of No. four triodes is sequentially connected the collector of No. four resistance, No.1 triode；The emitter of No. two triodes is connected with No. six resistance and No. two resistance simultaneously；No. two resistance are connected with the anode of No.1 current source and No. three resistance simultaneously；The base stage and collector of No. three triodes are connected with the base stage of No.1 triode simultaneously；The emitter of No. three triodes is connected with No. three resistance, and No. two resistance are connected with the anode of No.1 current source and No. three resistance simultaneously.It has the beneficial effect that and low frequency is not present by frequency, with enough phase margins, fast response time, sensitivity is higher.Suitable for passive optical network local side receiver.
Description
Technical field
The present invention relates to the trans-impedance amplifiers of four kinds of burst modes with high dynamic range.
Background technique
In the application of passive optical network PON, local side receiver OLT needs timesharing to receive user's end signal, due to each use
The distance difference at family end and local side, the signal amplitude for causing local side to receive have larger difference in different time sections, this requires
Local side operation of receiver is in burst mode；And in order to improve efficiency of transmission, happen suddenly stablize the time in various agreements all by
Stringent limitation.Burst mode trans-impedance amplifier Burst mode TIA is an important component of PON OLT, its design
It needs to be weighed between the parameters such as noise, bandwidth, gain, sensitivity, dynamic range and response time, designer is proposed
Stern challenge.
As shown in Figure 1, common trans-impedance amplifier is by triode Q1, triode Q2, resistance R1, resistance RF, voltage source VDC1
With current source IDC1Composition.Resistance R1One end be connected with the power end of PON OLT；Resistance R1The other end simultaneously with triode Q1
Collector, triode Q2Base stage be connected with voltage output end VOUT；Diode is external photodiode, it is optical signal
Current signal is converted to, the cathode of photodiode is connected with photodiode cathode voltage input-terminal；Photodiode
Anode simultaneously with triode Q1Base stage and resistance RFOne end be connected；Triode Q2Collector and PON OLT power end phase
Even；Triode Q2Emitter simultaneously with resistance RFThe other end and current source IDC1Anode be connected；Current source IDC1Cathode with
The ground terminal of PON OLT is connected；Triode Q1Emitter and voltage source VDC1Anode be connected；Voltage source VDC1Cathode with
The ground terminal of PON OLT is connected；Triode Q2Emitter and resistance RFThe other end, current source IDC1Anode intersection node
For VS1.The current signal of the trans-impedance amplifier will all flow through feedback to resistance RFOn, and in node VS1And voltage output end
VOUT generates voltage signal；So current signal is bigger, node VS1Voltage it is lower, as node VS1Brownout when
It will cause current source IDC1Saturation, and then cause the dynamic range of the trans-impedance amplifier smaller.
Existing technology is in order to increase the dynamic range of common trans-impedance amplifier, the method restored using direct current, such as Fig. 2 institute
Show, passes through amplifier AMP1, resistance R0, capacitor C0With triode Q3Extract the DC component of input current；Commonly amplifying across resistance
On the basis of device, amplifier AMP1Electrode input end anode, resistance R with photodiode simultaneouslyFOne end, triode Q1's
Base stage and triode Q3Collector be connected；Amplifier AMP1Negative input be connected to node VS1With triode Q2Emitter
Between；Amplifier AMP1Output end and resistance R0One end be connected；Resistance R0The other end simultaneously with capacitor C0One end and three poles
Pipe Q3Base stage be connected；Capacitor C0The other end be connected with the ground terminal of PON OLT；Triode Q3Emitter and PON OLT
Ground terminal is connected.The trans-impedance amplifier with direct current recovery is there are low-frequency cut-off frequency as shown in figure 3, so in signal pattern
Joined mark number is no more than certain value, and due to R0And C0The low-pass network of composition leads to the band there are certain charge and discharge time
The sensitivity for the trans-impedance amplifier that direct current restores is inadequate.
Summary of the invention
That there are low frequencies is smaller by frequency and dynamic range the purpose of the present invention is to solve existing trans-impedance amplifier,
The low problem of sensitivity proposes four kinds of high dynamic range burst mode trans-impedance amplifiers.
The first high dynamic range burst mode trans-impedance amplifier provided by the invention, it includes No.1 triode, No. two
Triode, No.1 resistance, No. six resistance, photodiode, photodiode cathode voltage input-terminal, voltage source and No.1 electricity
Stream source；One end of No.1 resistance is connected with the power end of passive optical network local side receiver；The other end of No.1 resistance simultaneously with
The connection of the base stage of the collector of No.1 triode and No. two triodes, tie point is as voltage output end；The yin of photodiode
Pole is connected with photodiode cathode voltage input-terminal；The anode of photodiode simultaneously with the base stage of No.1 triode and six
One end of number resistance is connected；The collector of No. two triodes is connected with the power end of passive optical network local side receiver；No.1 electricity
The cathode in stream source is connected with the ground terminal of passive optical network local side receiver；The emitter of No.1 triode and the anode of voltage source
It is connected；The cathode of voltage source is connected with the ground terminal of passive optical network local side receiver；
It further includes loop phase nargin compensation circuit and dynamic auto gain control circuit；
The loop phase nargin compensation circuit includes No. four triodes and No. four resistance；
The base stage of No. four triodes is No. two nodes, and the voltage of No. two nodes is for guaranteeing loop phase nargin compensation circuit
Stable state is in when work；The collector of No. four triodes is connected with the power end of passive optical network local side receiver；No. four
The emitter of triode is connected with one end of No. four resistance；The other end of No. four resistance is connected with the collector of No.1 triode；
The dynamic auto gain control circuit includes No. three triodes, No. two resistance and No. three resistance；
The emitters of No. two triodes is connect with one end of the other end of No. six resistance and No. two resistance simultaneously, connecting node
As No.1 node；The other end of No. two resistance is connected with one end of the anode of No.1 current source and No. three resistance simultaneously；
The base stage and collector of No. three triodes are connected with the base stage of No.1 triode simultaneously；The emitter of No. three triodes
It is connected with the other end of No. three resistance.
The present invention also provides second of high dynamic range burst mode trans-impedance amplifier, second of high dynamic range bursts
Mode trans-impedance amplifier is on the basis of the first high dynamic range burst mode trans-impedance amplifier, using No.1 metal-oxide-semiconductor generation
For No. four triodes；No. three triodes are replaced using No. two metal-oxide-semiconductors；
The grid of No.1 metal-oxide-semiconductor is No. two nodes, the source electrode of No.1 metal-oxide-semiconductor and the power supply of passive optical network local side receiver
End is connected；The drain electrode of No.1 metal-oxide-semiconductor is connected with one end of No. four resistance；
The grid and source electrode of No. two metal-oxide-semiconductors are connected with the base stage of No.1 triode simultaneously；The drain electrode of No. two metal-oxide-semiconductors with No. three
The other end of resistance is connected.
The present invention also provides the third high dynamic range burst mode trans-impedance amplifiers, it includes No.1 triode, two
Number triode, No.1 resistance, No. six resistance, photodiode, photodiode cathode voltage input-terminal and voltage source；No.1
One end of resistance is connected with the power end of passive optical network local side receiver；The other end of No.1 resistance simultaneously with No.1 triode
Collector and No. two triodes base stage connection, tie point is as voltage output end；The cathode and photoelectricity two of photodiode
Pole pipe cathode voltage input terminal is connected；The anode of photodiode simultaneously with the base stage of No.1 triode and No. six resistance one
End is connected；The collector of No. two triodes is connected with the power end of passive optical network local side receiver；The transmitting of No.1 triode
Pole is connected with the anode of voltage source；The cathode of voltage source is connected with the ground terminal of passive optical network local side receiver；
It further includes loop phase nargin compensation circuit, dynamic auto gain control circuit and biasing circuit；
The loop phase nargin compensation circuit includes No. four triodes and No. four resistance；
The dynamic auto gain control circuit includes No. three triodes, No. two resistance and No. three resistance；
The biasing circuit includes No. five triodes, No. six triodes, No. seven triodes, No. eight triodes, No. nine three poles
Pipe, No. ten triodes, ride on Bus No. 11 triode, ten No. two triodes, No.1 current source and No. five resistance；
The base stage of No. four triodes is No. two nodes, and the voltage of No. two nodes is for guaranteeing loop phase nargin compensation circuit
Stable state is in when work；The collector of No. four triodes is connected with the power end of passive optical network local side receiver；No. four
The emitter of triode is connected with one end of No. four resistance；The other end of No. four resistance is connected with the collector of No.1 triode；
The emitters of No. two triodes is connect with one end of the other end of No. six resistance and No. two resistance simultaneously, connecting node
As No.1 node；
The base stage and collector of No. three triodes are connected with the base stage of No.1 triode simultaneously；The emitter of No. three triodes
It is connected with one end of No. three resistance；The other end of No. three resistance is connect with the other end of No. two resistance；
The collector of No. five triodes is connected with the common end of No. three resistance and No. two resistance；The emitter of No. five triodes
It is connected with the ground terminal of passive optical network local side receiver；
The anode of No.1 current source is connected with the power end of passive optical network local side receiver；The cathode of No.1 current source is same
The base stage of Shi Yuwu triode, the base stage of No. six triodes, the collector phase of the base stage of No. seven triodes and No. seven triodes
Even；
The ground connection of the emitter of No. six triodes and the emitter of No. seven triodes with passive optical network local side receiver
End is connected；The collectors of No. six triodes simultaneously with the collector of No. eight triodes, the base stage of No. eight triodes and No. nine three poles
The base stage of pipe is connected；
The power supply of the emitter of No. eight triodes and the emitter of No. nine triodes with passive optical network local side receiver
End is connected；
The collector of No. nine triodes is connected with one end of No. two nodes and No. five resistance simultaneously；
The base stage that the other end of No. five resistance connects ten No. two triodes simultaneously is connected with the collector of ten No. two triodes；
The emitters of ten No. two triodes simultaneously with the base stage of ride on Bus No. 11 triode and the collector phase of ride on Bus No. 11 triode
Even；
The emitter of ride on Bus No. 11 triode is connected with the collector of the base stage of No. ten triodes and No. ten triodes simultaneously；
The emitter of No. ten triodes is connected with the ground terminal of passive optical network local side receiver.
The present invention also provides the 4th kind of high dynamic range burst mode trans-impedance amplifier, the 4th kind of high dynamic range bursts
Mode trans-impedance amplifier be on the basis of the third high dynamic range burst mode trans-impedance amplifier, using No. two current sources and
Ten No. three triodes replace voltage source；
The anode of No. two current sources is connected with the power end of passive optical network local side receiver；
The cathode of No. two current sources is connected with the collector of ten No. three transistor bases and ten No. three triodes simultaneously；
The collector of ten No. three triodes is connected with the emitter of No.1 triode；
The emitter of ten No. three triodes is connected with the ground terminal of passive optical network local side receiver；
Ten No. three triodes are NPN type triode.
The beneficial effects of the invention are as follows dynamics in four kinds of high dynamic range burst mode trans-impedance amplifier provided by the invention
Automatic gain control circuit all ensure that the small-signal gain of the trans-impedance amplifier, and there is no low frequencies by frequency；Increase this
The overload current of trans-impedance amplifier, realizes the high dynamic range of the trans-impedance amplifier, and loop phase nargin compensation circuit is realized
Loop compensation is carried out to dynamic auto gain control circuit, maintains the enough phase margins of the trans-impedance amplifier；And it should
Trans-impedance amplifier does not need DC restoration circuit, so having very fast response speed, sensitivity is higher；The third high dynamic
The biasing circuit of range burst mode trans-impedance amplifier can guarantee under different process, to loop phase nargin compensation circuit into
Row biasing.
The present invention is suitable for passive optical network local side receiver.
Detailed description of the invention
Fig. 1 is the circuit connection diagram of common trans-impedance amplifier in background technique；
Fig. 2 is the circuit connection diagram across common trans-impedance amplifier that DC restoration circuit is used in background technique；
Fig. 3 is in background technique using the amplitude-frequency characteristic schematic diagram of the trans-impedance amplifier of DC restoration circuit；
Fig. 4 is high dynamic range burst mode trans-impedance amplifier connection schematic diagram described in specific embodiment one；
Fig. 5 is high dynamic range burst mode trans-impedance amplifier connection schematic diagram described in specific embodiment three；
Fig. 6 is high dynamic range burst mode trans-impedance amplifier connection schematic diagram described in specific embodiment five；
Fig. 7 is high dynamic range burst mode trans-impedance amplifier connection schematic diagram described in specific embodiment seven；
Fig. 8 is high dynamic range burst mode trans-impedance amplifier amplitude-frequency characteristic schematic diagram described in specific embodiment one；
Fig. 9 is for the output voltage of high dynamic range burst mode trans-impedance amplifier described in specific embodiment one and across resistance
The curve changed with input current；
Figure 10 is loop of the high dynamic range burst mode trans-impedance amplifier at 25 DEG C described in specific embodiment five
The curve graph that phase margin changes with input current；
Figure 11 is loop of the high dynamic range burst mode trans-impedance amplifier at 110 DEG C described in specific embodiment five
The curve graph that phase margin changes with input current.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, high dynamic described in present embodiment in conjunction with Fig. 4, Fig. 8 and Fig. 9
Range burst mode trans-impedance amplifier, in the present embodiment, it includes No.1 triode Q1, No. two triode Q2, No.1 resistance
R1, No. six resistance R6, photodiode 3, photodiode cathode voltage input-terminal 4, voltage source VDC1With No.1 current source
IDC1；No.1 resistance R1One end be connected with the power end VDD of passive optical network local side receiver；No.1 resistance R1The other end it is same
When with No.1 triode Q1Collector and No. two triode Q2Base stage connection, tie point is as voltage output end VOUT；Photoelectricity
The cathode of diode 3 is connected with photodiode cathode voltage input-terminal 4；The anode of photodiode 3 simultaneously with No.1 three
Pole pipe Q1Base stage and No. six resistance R6One end be connected；No. two triode Q2Collector and passive optical network local side receiver
Power end VDD be connected；No.1 current source IDC1Cathode be connected with the ground terminal GND of passive optical network local side receiver；No.1
Triode Q1Emitter and voltage source VDC1Anode be connected；Voltage source VDC1Cathode and passive optical network local side receiver
Ground terminal GND is connected；
It further includes loop phase nargin compensation circuit 1 and dynamic auto gain control circuit 2；
The loop phase nargin compensation circuit 1 includes No. four triode Q4With No. four resistance R4；The compensation of loop phase nargin
Circuit 1 carries out loop compensation for realizing to dynamic auto gain control circuit 2；
No. four triode Q4Base stage be No. two node VB1, No. two node VB1Voltage for guaranteeing loop phase nargin
Stable state is in when compensation circuit 1 works；No. four triode Q4Collector and passive optical network local side receiver power supply
VDD is held to be connected；No. four triode Q4Emitter and No. four resistance R4One end be connected；No. four resistance R4The other end and No.1
Triode Q1Collector be connected；
The dynamic auto gain control circuit 2 includes No. three triode Q3, No. two resistance R2With No. three resistance R3；Dynamically
Automatic gain control circuit 2 for realizing the trans-impedance amplifier high dynamic range；
No. two triode Q2Emitter simultaneously with No. six resistance R6The other end and No. two resistance R2One end connection, even
Contact is as No.1 node VS1；No. two resistance R2The other end simultaneously with No.1 current source IDC1Anode and No. three resistance R3's
One end is connected；No. two resistance R2For adjusting the firing current of dynamic auto gain control circuit 2；
No. three triode Q3Base stage and collector simultaneously with No.1 triode Q1Base stage be connected；No. three triode Q3's
Emitter and No. three resistance R3The other end be connected.
A kind of high dynamic range burst mode trans-impedance amplifier described in present embodiment, is arranged No. two resistance R2Both ends electricity
Press less than No. three triode Q3Cut-in voltage VTH, then when input current is zero, due to No. six resistance R6Both end voltage is zero,
No. three triode Q3Conducting voltage VBEEqual to No. two resistance R2Both end voltage, No. three triode Q3With No. three resistance R3Without electricity
Stream flows through, when input current, which is started from scratch, to be increased, No. six resistance R6Both end voltage increases, as No. six resistance R6Both end voltage with
No. two resistance R2More than No. three triode Q of the sum of both end voltage3Cut-in voltage VTHWhen, by No. three triode Q3With No. three resistance
R3The dynamic of composition is started to work across resistance unit, equivalent to reduce across resistance.
Since loop phase nargin compensation circuit 1 has used the device with dynamic auto 2 same type of gain control circuit,
And loop phase nargin compensation circuit 1 and dynamic auto gain control circuit 2 have similar impedance operator after working, so energy
Enough guarantee that the trans-impedance amplifier there can be preferable phase margin in wide dynamic range.
Amplitude-frequency characteristic emulation is carried out according to the trans-impedance amplifier, as shown in figure 8, can determine that the trans-impedance amplifier is not deposited
In low frequency by frequency；
It carries out output voltage and changes across resistance with input current to emulate according to the trans-impedance amplifier, as shown in figure 9, can
Determination is initially arranged on 850 Ω across resistance, and when input current increases to 300 μ A, loop phase nargin compensation circuit 1 and dynamic are certainly
Dynamic gain control circuit 2 is started to work, and No. three triode Q are flowed through3With No. four triode Q4Electric current start to increase, across resistance resistance value
It begins to decline, when input current increases to 1mA, flows through No. three triode Q3With No. four triode Q4Current equivalence impedance
With No. three resistance R3With No. four resistance R4Resistance value compared to being ignored, do not declining across resistance at this time, the resistance value across resistance is No. two at this time
Resistance R2With No. three resistance R3Sum.
Specific embodiment 2: present embodiment be to high dynamic range burst mode described in specific embodiment one across
Impedance amplifier further explains, in the present embodiment, the No.1 triode Q1, No. two triode Q2, No. three triodes
Q3With No. four triode Q4It is NPN type triode.
Specific embodiment 3: embodiment is described with reference to Fig.5, present embodiment is described in the specific embodiment one
High dynamic range burst mode trans-impedance amplifier on the basis of be replaced, in the present embodiment, using No.1 metal-oxide-semiconductor M1Generation
For No. four triode Q4；Using No. two metal-oxide-semiconductor M2Instead of No. three triode Q3；
No.1 metal-oxide-semiconductor M1Grid be No. two node VB1, No.1 metal-oxide-semiconductor M1Source electrode and passive optical network local side receiver
Power end VDD be connected；No.1 metal-oxide-semiconductor M1Drain electrode and No. four resistance R4One end be connected；
No. two metal-oxide-semiconductor M2Grid and source electrode simultaneously with No.1 triode Q1Base stage be connected；No. two metal-oxide-semiconductor M2Drain electrode
With No. three resistance R3The other end be connected.
As long as guaranteeing that loop phase nargin compensation circuit 1 and dynamic auto gain control circuit 2 have similar impedance operator,
The trans-impedance amplifier just can work normally.
Specific embodiment 4: present embodiment be to high dynamic range burst mode described in specific embodiment three across
Impedance amplifier further limits, in the present embodiment, the No.1 metal-oxide-semiconductor M1With No. two metal-oxide-semiconductor M2It is N-type metal-oxide-semiconductor.
Specific embodiment 5: illustrating present embodiment in conjunction with Fig. 6, Figure 10 and Figure 11, height described in present embodiment is dynamic
State range burst mode trans-impedance amplifier, it includes No.1 triode Q1, No. two triode Q2, No.1 resistance R1, No. six resistance
R6, photodiode 3, photodiode cathode voltage input-terminal 4 and voltage source VDC1；No.1 resistance R1One end and passive light
The power end VDD of linked office's end receiver is connected；No.1 resistance R1The other end simultaneously with No.1 triode Q1Collector and two
Number triode Q2Base stage connection, tie point is as voltage output end VOUT；Cathode and the photodiode yin of photodiode 3
Pole tension input terminal 4 is connected；The anode of photodiode 3 simultaneously with No.1 triode Q1Base stage and No. six resistance R6One
End is connected；No. two triode Q2Collector be connected with the power end VDD of passive optical network local side receiver；No.1 triode Q1
Emitter and voltage source VDC1Anode be connected；Voltage source VDC1Cathode and passive optical network local side receiver ground terminal
GND is connected；
It further includes loop phase nargin compensation circuit 1, dynamic auto gain control circuit 2 and biasing circuit 5；
The loop phase nargin compensation circuit 1 includes No. four triode Q4With No. four resistance R4；
The dynamic auto gain control circuit 2 includes No. three triode Q3, No. two resistance R2With No. three resistance R3；
The biasing circuit 5 includes No. five triode Q5, No. six triode Q6, No. seven triode Q7, No. eight triode Q8、
No. nine triode Q9, No. ten triode Q10, ride on Bus No. 11 triode Q11, ten No. two triode Q12, No.1 current source IDC1With No. five
Resistance R5；
No. four triode Q4Base stage be No. two node VB1, No. two node VB1Voltage for guaranteeing loop phase nargin
Stable state is in when compensation circuit 1 works；No. four triode Q4Collector and passive optical network local side receiver power supply
VDD is held to be connected；No. four triode Q4Emitter and No. four resistance R4One end be connected；No. four resistance R4The other end and No.1
Triode Q1Collector be connected；
No. two triode Q2Emitter simultaneously with No. six resistance R6The other end and No. two resistance R2One end connection, even
Node is connect as No.1 node VS1；
No. three triode Q3Base stage and collector simultaneously with No.1 triode Q1Base stage be connected；No. three triode Q3's
Emitter and No. three resistance R3One end be connected；No. three resistance R3The other end and No. two resistance R2The other end connection；
No. five triode Q5Collector and No. three resistance R3With No. two resistance R2Common end be connected；No. five triode Q5
Emitter be connected with the ground terminal GND of passive optical network local side receiver；
No.1 current source IDC1Anode be connected with the power end VDD of passive optical network local side receiver；No.1 current source
IDC1Cathode simultaneously with No. five triode Q5Base stage, No. six triode Q6Base stage, No. seven triode Q7Base stage and No. seven
Triode Q7Collector be connected；
No. six triode Q6Emitter and No. seven triode Q7Emitter connect with passive optical network local side receiver
Ground terminal GND is connected；No. six triode Q6Collector simultaneously with No. eight triode Q8Collector, No. eight triode Q8Base stage
With No. nine triode Q9Base stage be connected；
No. eight triode Q8Emitter and No. nine triode Q9Electricity of the emitter with passive optical network local side receiver
Source VDD is connected；
No. nine triode Q9Collector simultaneously with No. two node VB1With No. five resistance R5One end be connected；
No. five resistance R5The other end simultaneously connect ten No. two triode Q12Base stage and ten No. two triode Q12Current collection
Extremely it is connected；
Ten No. two triode Q12Emitter simultaneously with ride on Bus No. 11 triode Q11Base stage and ride on Bus No. 11 triode Q11Collection
Electrode is connected；
Ride on Bus No. 11 triode Q11Emitter simultaneously with No. ten triode Q10Base stage and No. ten triode Q10Collector
It is connected；
No. ten triode Q10Emitter be connected with the ground terminal GND of passive optical network local side receiver.
In biasing circuit 5, by No. five triode Q5, No. six triode Q6, No. seven triode Q7, No. eight triode Q8With
No. nine triode Q9The current mirror of composition is simultaneously No. two triode Q2, No. two resistance R2With No. five resistance R5Bias current is provided,
By adjusting the ratio of each current mirror and No. two resistance R2With No. five resistance R5Resistance value so that No. two resistance R2With No. five electricity
Hinder R5The voltage at both ends is equal, and enabling this voltage value is VSET, when input current is zero, No. three triode Q3With No. four triodes
Q4Conducting voltage VBEEqual to VSET, due to when input current increases, No.1 triode Q1Emitter voltage change,
So No. three triode Q3With No. four triode Q4It is opened in same input current；Since biasing circuit 5 only relies on No.1 electric current
Source IDC1It is biased, so can be realized No. two node VB1Voltage carry out dynamic adjustment depending on the temperature；
It is emulated according to changing to loop phase nargin of the trans-impedance amplifier at 25 DEG C with input current, such as Figure 10 institute
Show, is capable of determining that input current in the working range of 6 μ A-2mA, phase margin is maintained at 50 degree or more.
It is emulated according to changing to loop phase nargin of the trans-impedance amplifier at 110 DEG C with input current, such as Figure 11 institute
Show, is capable of determining that input current in the working range of 6 μ A-2mA, phase margin is maintained at 50 degree or more.
Therefore, a kind of high dynamic range burst mode trans-impedance amplifier described in present embodiment can not be by temperature change
Influence, guarantee that the trans-impedance amplifier can work normally under different process.
Specific embodiment 6: present embodiment be to high dynamic range burst mode described in specific embodiment five across
Impedance amplifier further limits, in the present embodiment, No. five triode Q5, No. six triode Q6, No. seven triode Q7、
No. ten triode Q10, ride on Bus No. 11 triode Q11With ten No. two triode Q12It is NPN type triode；
No. eight triode Q8With No. nine triode Q9It is PNP type triode.
Specific embodiment 7: embodiment is described with reference to Fig.7, present embodiment is described in the specific embodiment five
High dynamic range burst mode trans-impedance amplifier on the basis of be replaced, in the present embodiment, using No. two current sources
IDC2With ten No. three triode Q13Instead of voltage source VDC1；
No. two current source IDC2Anode be connected with the power end VDD of passive optical network local side receiver；No. two current sources
IDC2For reducing input impedance；
No. two current source IDC2Cathode simultaneously with ten No. three triode Q13Base stage and ten No. three triode Q13Collector
It is connected；
Ten No. three triode Q13Collector and No.1 triode Q1Emitter be connected；
Ten No. three triode Q13Emitter be connected with the ground terminal GND of passive optical network local side receiver；
Ten No. three triode Q13For NPN type triode.
Claims (3)
1. a kind of high dynamic range burst mode trans-impedance amplifier, it includes No.1 triode (Q1), No. two triode (Q2), one
Number resistance (R1), No. six resistance (R6), photodiode (3), photodiode cathode voltage input-terminal (4) and voltage source
(VDC1)；No.1 resistance (R1) one end be connected with the power end (VDD) of passive optical network local side receiver；No.1 resistance (R1)
The other end simultaneously with No.1 triode (Q1) collector and No. two triode (Q2) base stage connection, tie point is defeated as voltage
Outlet (VOUT)；The cathode of photodiode (3) is connected with photodiode cathode voltage input-terminal (4)；Photodiode
(3) anode simultaneously with No.1 triode (Q1) base stage and No. six resistance (R6) one end be connected；No. two triode (Q2) collection
Electrode is connected with the power end (VDD) of passive optical network local side receiver；No.1 triode (Q1) emitter and voltage source
(VDC1) anode be connected；Voltage source (VDC1) cathode be connected with the ground terminal (GND) of passive optical network local side receiver；
It is characterized in that, it further includes loop phase nargin compensation circuit (1), dynamic auto gain control circuit (2) and biasing
Circuit (5)；
The loop phase nargin compensation circuit (1) includes No. four triode (Q4) and No. four resistance (R4)；
The dynamic auto gain control circuit (2) includes No. three triode (Q3), No. two resistance (R2) and No. three resistance (R3)；
The biasing circuit (5) includes No. five triode (Q5), No. six triode (Q6), No. seven triode (Q7), No. eight triodes
(Q8), No. nine triode (Q9), No. ten triode (Q10), ride on Bus No. 11 triode (Q11), ten No. two triode (Q12), No.1 electric current
Source (IDC1) and No. five resistance (R5)；
No. four triode (Q4) base stage be No. two node (VB1), No. two node (VB1) voltage for guaranteeing that loop phase is abundant
Stable state is in when spending compensation circuit (1) work；No. four triode (Q4) collector and passive optical network local side receiver
Power end (VDD) be connected；No. four triode (Q4) emitter and No. four resistance (R4) one end be connected；No. four resistance (R4)
The other end and No.1 triode (Q1) collector be connected；
No. two triode (Q2) emitter simultaneously with No. six resistance (R6) the other end and No. two resistance (R2) one end connection,
Connecting node is as No.1 node (VS1)；
No. three triode (Q3) base stage and collector simultaneously with No.1 triode (Q1) base stage be connected；No. three triode (Q3)
Emitter and No. three resistance (R3) one end be connected；No. three resistance (R3) the other end and No. two resistance (R2) the other end connect
It connects；
No. five triode (Q5) collector and No. three resistance (R3) and No. two resistance (R2) common end be connected；No. five triodes
(Q5) emitter be connected with the ground terminal (GND) of passive optical network local side receiver；
No.1 current source (IDC1) anode be connected with the power end (VDD) of passive optical network local side receiver；No.1 current source
(IDC1) cathode simultaneously with No. five triode (Q5) base stage, No. six triode (Q6) base stage, No. seven triode (Q7) base
Pole and No. seven triode (Q7) collector be connected；
No. six triode (Q6) emitter and No. seven triode (Q7) emitter connect with passive optical network local side receiver
Ground terminal (GND) is connected；No. six triode (Q6) collector simultaneously with No. eight triode (Q8) collector, No. eight triodes
(Q8) base stage and No. nine triode (Q9) base stage be connected；
No. eight triode (Q8) emitter and No. nine triode (Q9) electricity of the emitter with passive optical network local side receiver
Source (VDD) is connected；
No. nine triode (Q9) collector simultaneously with No. two node (VB1) and No. five resistance (R5) one end be connected；
No. five resistance (R5) the other end simultaneously connect ten No. two triode (Q12) base stage and ten No. two triode (Q12) collection
Electrode is connected；
Ten No. two triode (Q12) emitter simultaneously with ride on Bus No. 11 triode (Q11) base stage and ride on Bus No. 11 triode (Q11)
Collector is connected；
Ride on Bus No. 11 triode (Q11) emitter simultaneously with No. ten triode (Q10) base stage and No. ten triode (Q10) current collection
Extremely it is connected；
No. ten triode (Q10) emitter be connected with the ground terminal (GND) of passive optical network local side receiver.
2. a kind of high dynamic range burst mode trans-impedance amplifier according to claim 1, which is characterized in that described No. five
Triode (Q5), No. six triode (Q6), No. seven triode (Q7), No. ten triode (Q10), ride on Bus No. 11 triode (Q11) and ten
No. two triode (Q12) it is NPN type triode；
No. eight triode (Q8) and No. nine triode (Q9) it is PNP type triode.
3. a kind of high dynamic range burst mode trans-impedance amplifier according to claim 1, which is characterized in that use No. two
Current source (IDC2) and ten No. three triode (Q13) replace voltage source (VDC1)；
No. two current source (IDC2) anode be connected with the power end (VDD) of passive optical network local side receiver；
No. two current source (IDC2) cathode simultaneously with ten No. three triode (Q13) base stage and ten No. three triode (Q13) collector
It is connected；
Ten No. three triode (Q13) collector and No.1 triode (Q1) emitter be connected；
Ten No. three triode (Q13) emitter be connected with the ground terminal (GND) of passive optical network local side receiver；
Ten No. three triode (Q13) it is NPN type triode.
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| CN111464144B (en) * | 2020-05-28 | 2025-05-06 | 南京美辰微电子有限公司 | Burst transimpedance amplifier circuit for XGSPON |
| CN115580242A (en) * | 2022-10-28 | 2023-01-06 | 南京美辰微电子有限公司 | Bandwidth enhancement and dynamic pole tracking circuit applied to high-speed burst mode trans-impedance amplifier |
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Address after: Unit 402, 1736 Gangzhong Road, Xiamen Section, Xiamen Free Trade Pilot Area, Fujian Province Patentee after: Xiamen Siayuan billion Semiconductor Technology Co. Ltd. Address before: Unit 205, 1702 Gangzhong Road, Xiamen Free Trade Pilot Area Patentee before: (Xiamen) Microelectronics Technology Co., Ltd. |
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Inventor after: Liu Dejia Inventor after: Li Jinghu Inventor after: Fan Zhang Inventor after: Luo Zhicong Inventor after: Chen Riqing Inventor before: Liu Dejia Inventor before: Li Jinghu Inventor before: Fan Zhang |