Improved non-inverting integrator


Posted on Dec 19, 2012

In the circuit in Fig. 1, ICla produces the integral term required but also has the side effect of producing a proportional term not required, so this term is subtracted by IClb leaving a pure integral. If the ratio R2/R5 does not exactly match the ratio of R3/R4, the subtraction will not be complete and a small amount of the proportional term will reach the output. The result of this with a square wave input is shown in Fig. 3a as small steps in the output waveform at points X and Y. This effect can be completely removed by using the simplified circuit shown in Fig. 2. Here the signal is pre-inverted by ICla, then fed to a standard inverting integrator IClb.


Improved non-inverting integrator
Click here to download the full size of the above Circuit.

The result is a non-inverting integrator with the advantage that the unwanted proportional term is never produced, so it does not need to be subtracted.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Dew sensor circuit
EPROM adapter for ATMEL Programmer
Electronic flash trigger
switch mode power supply What does frequency foldback do in a switching regulator
Transistor current mirror circuit
Block Diagram of the CT Scanner
80 METER CW TRANSCEIVER WITH DIRECT CONVERSION
Transistor Radio Output Stages
300kHz signal generator circuit



Top