BIGFOOT (Readout)
ShalikaSingh - 18:23, Friday 27 September 2024 (3764)
Comment to RF circuit for EOM (Click here to view original report: 3745)

I can use a feedback resistance of 1.1k instead of 1.07k, since 1.1k is readily available. Also, the inductors measure about 6.4mH(using multimeter), instead of 6.8mH. In series they will be 12.8mH instead of 13.6m in the deisgn. This shifts the resonant frequency by 18kHz, but doesn't change the gain or the current properties of the circuit too much. So, even if the components will not be perfect we will not overshoot the 20mA limit of the opAmp current at the output.

The OpAmp in elec shop is Op27G / OP27 whose max current is 20mA. 

There is a discrepancy in the reported output current for OP27. Texas instruments says 30mA in their datasheet.  On the other hand Digikey reports 20mA.