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Message ID: 625     Entry time: Tue Mar 2 12:41:23 2010
Author: Dmass 
Type: Electronics 
Category: Doubling 
Subject: Op Amps 

Here are plots for the noise of my op amps (in Volts).

I compared 8 op amps, these are the two winners I came up with, AD743 clearly wins. I also included (for later reference) the noise of the ISS PDs I am using.

Op amps I looked at:

  • AD: 711 743 797 829
  • OP: 27 
  • OPA: 627
  • LTI: 1128 1028

This list was made out of Frank's head based on what he thinks we already have. The AD743 seems to give a SNR of 1k throughout my measurement band, which was my somewhat arbitrary requirement (e.g. based on what I got optically when I used prisms, but I don't know how much my old layout was limiting me).

 

Attachment 1: GreenAD743z100k.PNG  15 kB  | Hide | Hide all
GreenAD743z100k.PNG
Attachment 2: GreenOPA627z100k.PNG  15 kB  | Hide | Hide all
GreenOPA627z100k.PNG
Attachment 3: ISSAD829z500.PNG  15 kB  | Hide | Hide all
ISSAD829z500.PNG
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