OPA180: OPA180 Chopping Frequency

Masaoki Koide

Part Number: OPA180
Other Parts Discussed in Thread: OPA188

Dear Sir,

Our custoemer would like to know about chopping frequency of OPA180. According to the OPA188 datasheet, there is a figure about off-set correction frequency, 3us, on page 16. I think it is the same as chopping frequency of OPA188. Are there any documents describing about chopping frequency of OPA180? Please advise.

Thanks,

Koide

over 7 years ago

0 Marek Lis over 7 years ago

TI__Guru 63760 points

Masaoki-san,

OPA180 is a lower precision version of OPA188 thus their chopping frequency is the same - around 650kHz. Since it takes two clock cycles for each correction, the amplifier is zero-corrected every 3us.

0 Masaoki Koide over 7 years ago in reply to Marek Lis

Intellectual 580 points

Marek-san,

Thank you for your quick feedback. Very helpful.

Regards,
Koide

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OPA180: OPA180 Chopping Frequency