awalshe

Re: Driving ADC, please help

Discussion created by awalshe Employee on Aug 15, 2013
Latest reply on Aug 26, 2013 by awalshe
Branched from an earlier discussion

Hi Ramon,

You could use a basic inverting opamp config with the ADA4841-1

http://www.analog.com/static/imported-files/tutorials/MT-213.pdf

Rin would be twice Rf. You could use 5V and ground as the supplies. However the limitations are you may lose some range near ground and near 5V (maybe 50-100mV depending on head/footroom spec). Also the input impedance is dictated by Rin, so not a high impedance input. Is the positive supply fixed at 12V?

Best Rgds,

Alan

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