All Questions
Tagged with differential differential-amplifier
45
questions
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Distortion in a negative channel of the differential amplifier THS4505
I designed a single-ended to differential signal amplifier using a tool provided by Texas Instruments:
The source signal passes through a voltage follower (OPA810IDBVR), so the output resistance ...
- 75
5
votes
4
answers
474
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Ground in differential opamp situation
I have a setup like such in the provided schematic.
The idea is that I do have a -2.5 to 2.5V signal which I'd like to convert to a signal between 0 and 5V.
How should I connect my opamp? Should the ...
- 376
1
vote
2
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214
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Designing a differential amplifier
I was trying to design a differential amplifier in which the collector resistances of the transistors are 2.2 kΩ and are biased at 1 mA and are supplied with Vcc= +/-5 V . To find the Ro (the ...
- 43
1
vote
2
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252
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I would like to know what type of op-amp this circuit is
This circuit is connected to 250V AC power and I would like to calculate the values of the resistor and capacitor, but I don't know which formula to use to calculate it.
I think this circuit is ...
- 57
0
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1
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50
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Why does the offset voltage have this polarity?
Consider the following from Chapter 3.5.6 of Analysis and Design of Analog Integrated Circuits by Gray, Hurst, Meyer, and Lewis:
As I ask about in a separate question, the authors claim that for some ...
- 1,161
2
votes
6
answers
256
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Why is an offset voltage and an offset current sufficient to represent mismatches in a differential amplifier?
Chapter 3.5.6 of Analysis and Design of Analog Integrated Circuits by Gray, Hurst, Meyer, and Lewis (GHLM) discusses the effect of device mismatches on the behavior of emitter- or source-coupled ...
- 1,161
2
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0
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67
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Transmitting differential video signal to the ADC input
I'm designing a circuit that converts a single-ended analog video signal (f = 10 MHz) to a differential pair and then is processing the data to a digital form. The signal is transmitted through a ...
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2
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1
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85
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Designing a single-ended to differential driver to DC2588A-A evaluation board
I'd like to test the DC2588A-A, and I noticed that the user guide mentions it's driven by a pair of ADA4899-1 DRIVER amplifiers. However, the user guide doesn't provide clear information about the ...
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0
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112
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Differential Amplifier with unbalanced differential signal
The circuit topology of figure 1a corresponds to a differential amplifier with resistor load.
Since the signal generator available in lab does not have a differential output, a balanced
differential ...
- 179
0
votes
3
answers
292
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Differential op amp feedback resistors
I understand if you do not have negative feedback in any op amp configuration then the output will be unstable (will oscillate for example) and the feedback resistor and input resistor on the negative ...
- 412
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1
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640
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Using a differential op amp to convert a differential pair into a single ended signal
I need to convert a differential pair into a single ended signal and would like to use a differential amplifier to do this.
Using the above circuit and the ADA4850 I was hoping to achieve this but of ...
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1
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1
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255
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Differential Pair routing for motor shunt current sensing
I am laying out an ESC - VESC design - and I came across a few papers from TI, ST, and ADI talking about running the sense lines from the phase shunt resistors to the amplifiers/CSAs as a differential ...
- 240
0
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1
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156
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Function generator cannot generate differential voltage?
I am using the AD620 as instrumentation amplifier to amplify the body's ECG signal. An ECG is a differential signal (measured with two electrodes) and I want a differential gain of \$G_d = 1000\$.
The ...
- 4,145
1
vote
1
answer
368
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How to buffer (high input impedance required) a differential signal
I'm wanting a to increase the input impedance to a differential ADC. The ADC spec states that it can't handle a negative voltage lower than -100mV the ADC's supply can handle ~5V (this is a ATtiny1617)...
- 127
0
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2
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667
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Is `c` or `t` the positive line of a differential pair?
I'm looking at the W66CP2NQUAFJ from Winbond. It has a couple of pins, namely CK_t_A and CK_c_A. In the datasheet, it says that ...
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