| LukasLouw |
Can anyone reccommend a good unit gain stable dual opamp running off a single +5v supply to run a CS5341 analog to digital converter?
The ADC's input impedance is 25K, and needs 1Vrms, or 2.8Vp-p for full scale output.
Thanks,
Lukas |
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| peufeu |
What is the input capacitance of the ADC ?
(is. is it a sigma-delta or a sample and hold ?) |
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| LukasLouw |
| quote: | Originally posted by peufeu
What is the input capacitance of the ADC ?
(is. is it a sigma-delta or a sample and hold ?) |
Delta-sigma type.
Interestingly enough, input capacitance isn't specified, or at least I can't find it on the datasheet. However, teh DO reccommend 2700 pF from each analog input to gound.
Lukas |
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| peufeu |
OK. I asked because sample&hold ADCs, well, sample and hold the signal, which means they store it in a capacitor, and if the input opamp can't handle it, you have a problem.
Apart from that, I have no idea, but I'd suggest looking at the opamps used by people to power portable headphone gear at head-fi.com |
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| jackinnj |
| Take a look at the OPA365 from Texas Instruments. |
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