Post Go back to editing

Re: Driving ADC, please help

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

Parents
  • The requirement is just a single supply (not dual supply), 12V is just a random voltage.

    I choosed 12V because I thought that supply voltage must be equal or greater than input signal (10V).  Can we directly use 10V as input signal and power the opamp with just 5V?

    (Sorry, I divided the thread and cannot join it again)

Reply
  • The requirement is just a single supply (not dual supply), 12V is just a random voltage.

    I choosed 12V because I thought that supply voltage must be equal or greater than input signal (10V).  Can we directly use 10V as input signal and power the opamp with just 5V?

    (Sorry, I divided the thread and cannot join it again)

Children
No Data