ChrioN
Well-known member
Looking for an op amp with a dc offset of maximum 20mV. Any Ideas?
Discrete Op Amp with low, or trimable DC offset?
- Thread starter ChrioN
- Start date
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You can trim or servo any DOA, or buy an off the shelf IC that doesn't need trims.ChrioN said:
JR
Harpo
Well-known member
have a look at some compensation circuits, FI shown in the http://www.johnhardyco.com/pdf/990.pdf.
ChrioN
Well-known member
You are answering the wrong question, although I think I was clear enough. Thanks though.
Andy Peters
Well-known member
ChrioN said:
20 mV is a ridiculously crappy offset.
You can get parts that are below a millivolt. But they're not discrete.
DOAs can generally hit < 20mV without trimming by using precision dual transistors for the input LTP. That said good precision duals (or quads) are ICs themselves. The iconic LM394 (now obsolete) was the standard input LTP in Hardy 990 DOAs.
Pretty much any DOA can be trimmed for DC, but they may drift with time and temperature.
JR
Pretty much any DOA can be trimmed for DC, but they may drift with time and temperature.
JR
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