# Questions tagged [compensation]

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618 views

### Input Bias Compensation for a Comparator

I've been working on designing a discrete dual-slope ADC for school, and I've run into a problem. The schematic below shows my proposed input stage, an ideal integrator connected to a comparator. I've ...
99 views

### APD temperature variation

I know that the gain (M factor) of APD (Avalance Photo Diode) changes with temperature at a give reverse bias voltage, therefore, we need to a compensation either using a thermoelectric cooler or a ...
984 views

### Finding transfer function of a compensator circuit similar to a type 2 compensator topology

I know how to find transfer functions of op-amp circuits using equations derived from using Kirchhoff's current law (nodal analysis), and normally I don't have any problems solving them. However, I ...
300 views

### Op-Amp Input Bias Compensation for Multiple Feedback Filter

I'm adding an input bias current compensation network to the positive op-amp input of my band-pass multiple-feedback filter. I'm setting the source impedance for the positive input pin equal to that ...
4k views

### Intuitive way to see pole/zero directly from schematic

The image below is the electrical configuration and the transfer function of a type II compensator using OTA. By looking at the transfer function, we can easily see that the circuit has two poles (...
370 views

### Origin pole in type II compensator using OpAmp

I am reading about Type II Compensator Using Op-Amp from the application report here (page 4). From the transfer function (4), we can see that there is an origin pole, $f_{p0}$. However, the ...
662 views

### Compensated Attenuator question

In the explanation, it explains that C2, C3, C4 are for frequency compensating the impedance of C1 which varies according to frequency. Can someone explain how C2~C4 does it? and why the designer ...
673 views

### Approximation of a Non Ideal Differentiator

simulate this circuit – Schematic created using CircuitLab The above circuit is a differentiator, the op amp is assumed to be a single pole op amp, that is $A=\frac{wt}{s}$ The transfer ...
309 views

### Increase in compensation capacitor for op-amp

I am currently learning to design an op-amp, and understand that using compensation capacitors help to maintain stability of the op-amp. Currently, my compensation capacitor has a value around 10 pf. ...
549 views

### Understanding in-loop compensation for capacitive-loaded OpAmp

I'm trying to understand the in-loop compensation for a simple amplifier loaded with a capacitive load, as seen in this article from Analog: http://www.analog.com/library/analogdialogue/archives/38-...
81 views

### General process for compensating a complex system in the time domain

Say one has a system with feedback wrapping around some "complicated" system (more complicated than the traditional examples given): simulate this circuit – Schematic created using CircuitLab \...
426 views

### Control theory diagram for feedback circuit with compensation

An op-amp that drives a secondary gain stage might be given like this: simulate this circuit – Schematic created using CircuitLab Where it is important to note that FB1 is some impedence (...
1k views

### Wheatstone bridge offset

I have a Wheatstone bridge but I don't know the values of the resistances in it. My excitation voltage is 5 V. But instead of having 2.5 V on each output lines I get one line at 3.3 V and the other ...
212 views

### Oscillations in Precision Voltage to Current Converter Design

I am trying to re-design the TI Precision Design - Low Level (5uA) V-to-I Converter. My design goals are: Increase bandwidth from around 1kHz to 100kHz (ideally 1MHz in the future) Increase output ...
55 views

325 views

### Compensation of forward voltage drop of a diode - software

In my case I would like to compensate with software a voltage drop over the diode. I have diode RS2J which supplies DC/DC (50mA - 200 mA) converter at this point with resistor divider I would like to ...
688 views

### Temperature compensation accelerometer and cross axis sensitivity calibration

I'm trying to compensate a 3-axis MEMS accelerometer for temperature. I can access a climate chamber where the device can be rotated in ONE axis. There is another place where I can rotate two axis, ...