Puppet123
Full Member level 6
Single Ended Switched Capacitor Opamp to Differential Opamp Conversion
Hello,
I designed a single ended opamp sample/hold switched capacitor amplifier with sample capacitors and switches.
I want to convert it to a differential opamp.
What do I have to do to the current, sampling capacitances, switches and the load capacitances ?
I am guessing (please tell me if I am right) - double the current, 1/2 the sampling caps, 1/2 size of switches, double the load capacitance ? Also, add Common Mode Feedback. Is this correct ?
Is this correct ? Did I forget anything ?
Thank you.
Hello,
I designed a single ended opamp sample/hold switched capacitor amplifier with sample capacitors and switches.
I want to convert it to a differential opamp.
What do I have to do to the current, sampling capacitances, switches and the load capacitances ?
I am guessing (please tell me if I am right) - double the current, 1/2 the sampling caps, 1/2 size of switches, double the load capacitance ? Also, add Common Mode Feedback. Is this correct ?
Is this correct ? Did I forget anything ?
Thank you.