Need a precision low freq op amp

Alvin Schmitt1

Prodigy 140 points

Other Parts Discussed in Thread: OPA196, TLV9151, LM4040-N, TLV07, TLV197-Q1, TLV2186

I need to amplify a precision 2.5 v supply chip 3 times to 7.5 volts and I need:

1) inexpensive but precise over temperature 2.5 v source (or 5 v if you have one then I do not need the op amp)

2) inexpensive but precise op amp dc low frequency +12v single supply, rail to rail.

Thank you for the great help you always supply.

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 317090 points

Please put a number on "precise".

For example, the LM4040-N is a 5 V voltage reference with 0.1 % accuracy in the A grade. The TLV9151 has an offset voltage of 0.75 mV; the OPA196, 0.1 mV.

0 Michael Steffes over 3 years ago

Guru 48395 points

Your App does not seem to require RRinput, if not

Perhaps look at the TLV07

If it does,

Look at the TLV197-Q1 (not sure if there is a non Q1 version, but if so, look at that).

These are singles, if multichannel is more useful - those are out there as well on the TLV197

0 Michael Hartshorne over 3 years ago in reply to Michael Steffes

TI__Genius 13285 points

Hi Alvin,

The TLV2186 is a great low-cost part. It is a 24 V chopper with low power consumption, designed for sockets that need low-power, decent accuracy at low cost.

Otherwise also agree with Michael's suggestions above.

Best Regards,
Mike

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Need a precision low freq op amp