Translate An opAmp integrator to a OTA-C one

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SUMMARY

This discussion focuses on converting an OpAmp-based integrator filter to an OTA-C (Operational Trans-Impedance Amplifier with capacitive feedback) configuration. The user seeks guidance on translating the resistor-capacitor (RC) values from the OpAmp version to achieve equivalent behavior in the OTA-C version. Key components mentioned include a simple differential pair with resistors as loads, which is essential for maintaining the desired filter characteristics during the transition.

PREREQUISITES
  • Understanding of OpAmp integrators and their functionality
  • Knowledge of OTA-C configurations and their operational principles
  • Familiarity with resistor-capacitor (RC) circuits
  • Basic concepts of differential pairs in analog circuits
NEXT STEPS
  • Research the mathematical relationships between RC values in OpAmp and OTA-C configurations
  • Explore design techniques for implementing OTA-C filters
  • Study the characteristics of operational trans-impedance amplifiers
  • Examine practical applications and examples of OTA-C integrators in circuit design
USEFUL FOR

Electrical engineers, circuit designers, and students involved in analog electronics who are transitioning from OpAmp to OTA-C configurations in filter design.

Turin231
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I have a fliter that uses OpAmp based integrator. I want to make the same filter but using OTA-C instead of opamps. But I'm confused on the process of doing that. Anyone can help me on how to get the same behavior from the transition from one to an other?In other words translating the RC values in the omAmp version into the OTA version with the same behaviour

OpAmp integrator

http://www.art-sci.udel.edu/ghw/phys245/05S/classes/images/opamp-integrator.gif

OTA-C integrator

[PLAIN]http://img838.imageshack.us/img838/7088/otacinter.jpg

The ota will be a simple differential pair with resistors as loads.
 
Last edited by a moderator:
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Turin231 said:
I have a fliter that uses OpAmp based integrator. I want to make the same filter but using OTA-C instead of opamps. But I'm confused on the process of doing that. Anyone can help me on how to get the same behavior from the transition from one to an other?In other words translating the RC values in the omAmp version into the OTA version with the same behaviour

OpAmp integrator

http://www.art-sci.udel.edu/ghw/phys245/05S/classes/images/opamp-integrator.gif

OTA-C integrator

[PLAIN]http://img838.imageshack.us/img838/7088/otacinter.jpg

The ota will be a simple differential pair with resistors as loads.

Welcome to the PF!

What's an OTA? What is the context of the question? (School project, personal project, etc.)
 
Last edited by a moderator:
This may be part of a university project..


OTA: I mean operational trans-impedance amplifier.
 

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