4 ms·
I bought a copy of this in the past few months. I had my trusty AoE 2E but learned that 3E had expanded chapters on what's happened in the past 30 years in pre
by willis936 3y ago
I bought a copy of this in the past few months. I had my trusty AoE 2E but learned that 3E had expanded chapters on what's happened in the past 30 years in precision amplification. Turns out I was working on a schematic for a nanovolt meter (10 kHz BW, 1 kV isolation).
I whipped out every trick in chapters 5 and 7. I transcribed the massive opamp tables into excel to get a lay of the land and was able to find even newer models that exceeded. I settled on OPA4189 for gain, OP224B for isolation, and OPA1633 for output driving / final gain. It's out to fab now.
I initially wanted to use AD since they're the local guys and I like their style more than TI (who came off as a bit culty in their recruiting). Well all of AD's designs still in production for isolation are 5V supply max. What am I supposed to do with that? Analog inputs do best with bipolar 10V. I'm not eating into my noise budget and adding BOM/complexity because a vendor doesn't feel like making the high quality parts that they used to.
- kragen 3y agovintage nos analog devices parts on ebay when