Input Bandwidth & Output Bandwidth of an op-amp ?

[bala0x07]

Hi,

Please help me out to understand the difference between the input & output bandwidth of an operational amplifier ?

Attached: AMC1301 Isolated amplifier datasheet


(Any suggestions regarding Isolated amplifier to sense current running in 100KHz will also be helpful)


Thanks

 

[FvM]

Please help me out to understand the difference between the input & output bandwidth of an operational amplifier?

AMC1301 is no OP. It's comprised of an input amplifier, modulator, demodulator and output filter. Having lower cut-off frequency than input bandwidth, the 4th order output filter dominates the overall bandwidth. I guess the input bandwidth specification is given to allow estimation of possible interferences caused by high frequency input signals.

to sense current running in 100KHz

What's the exact measurement problem? If it's AC current, use a transformer.

 

[bala0x07]

Thank you for the reply !!!

I guess the input bandwidth specification is given to allow estimation of possible interferences caused by high frequency input signals.

Yeah, I too guessed the same, but thought to clarify with the experts

What's the exact measurement problem? If it's AC current, use a transformer.

Planning to use a CT to do the work, but I haven't developed any design before.
Anyhow will try to work out

Thanks once again