OPA2891: Low cost low noise input amplifier suggestion

Jon WANG

Part Number: OPA2891
Other Parts Discussed in Thread: OPA891

Tool/software:

Dears,

Customer want to find low noise input amplifier (<1nV/hz) ,I find OPA2891/2892 can meet this request. But customer said that the price of OPA2891/2892 is too high, he hope me to promote a low cost low noise amplifer.Could you pls help? Thanks.

7 months ago

0 Vikas Jeevannavar 7 months ago

TI__Intellectual 2805 points

Hi Jon WANG,

Please provide information on the key specs that customer is looking apart from voltage noise (<1nV/√hz) so that we can suggest the right opamp.
What is the Gain, bandwidth and Supply Voltage required? What is the end use?

Thanks

Vikas J

0 Clemens Ladisch 7 months ago

Guru 311870 points

Here is a search for opamps with Vn ≤ 1 nV√Hz: ti.com/amplifier-circuit/op-amps/products.html#7typ=0.69;1&sort=1130

The OPA2891/OPA891 already is the cheapest dual/single opamp.

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OPA2891: Low cost low noise input amplifier suggestion