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Old 11th August 2003, 04:32 AM   #1
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Default NonInverting Gain Amounts

Has anyone experimented with other gain than 20-30 which is what showed up as the norm when I searched this forum? General consensus is that the lower values the better, but has anyone tried gains between 10-18 or so? Is stability THAT big of a problem below gain=20?

Reason I ask, is that I don't need the power of the 3875 or even the 1875, but thought less gain would be better than attenuation of the input. My rails will be +/- 23 VDC and I'll be using the 1875.

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Old 11th August 2003, 05:35 PM   #2
ghetto is offline ghetto  United States
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You should try basing your design on the inverting technique, you can even go as far as gain=1, most people believe it sounds better too
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Old 11th August 2003, 05:54 PM   #3
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Nat Semi is pretty clear on setting the gain, given the supply rails and load.
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Old 11th August 2003, 05:55 PM   #4
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For many reasons, I'm sticking with the non-inverting amp at the moment. The main one is too many factors affect the feedback circuit on an inverting amp. There are less variables on the noninverting one: 2 resistors, and signal ground. On the inverting amp, you have the attenuator, dc blocking cap, wire, etc.
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