OPA188: Chopped stabilized amplifier or trimmed one?

Juan Aparicio Jimenez

Part Number: OPA188
Other Parts Discussed in Thread: OPA192,

Dear amp support,

A customer uses the OPA188 for an oscillator. It doesn’t work very well and it is confirmed by the simulation. They replace it by OPA192.

Is OPA188 a chopper stabilized amplifier or trimmed one?

Thanks and best regards, Juan.

over 2 years ago

+1 Tamara M Alani over 2 years ago

TI__Genius 10850 points

Hi Juan,

Thanks for your post. As stated in the OPA188 datasheet, the OPA188 is a zero-drift amplifier that uses chopping techniques to provide low initial offset voltage and near-zero drift over time and temperature. To learn more about zero-drift technology, please take a look at this brief tech note: https://www.ti.com/lit/an/sboa182c/sboa182c.pdf

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OPA188: Chopped stabilized amplifier or trimmed one?