electret condenser microphone (ECM) pre-amplifier

[cliffj]

Hi,

I need to design an electret condenser microphone (ECM) pre-amplifier by using CMOS process. And I've few opamp designs on the same process,too. Can anyone offer any good reference to design the whole structure and interface ?
I mean, like how to buffer the input signal from mic, the input capacitance of my amplifier, where to build the high pass filtering etc ...

Thx

 

[nickooeda]

maybe you can start with acknoledge your microphone,and then make the equalivant circuit.and find out the amp spec ,at last begin to design it!

 

[zmliu]

A.C. van der Woerd and W.A. Serdijn: Low-voltage low-power controllable preamplifier for electret microphones, IEEE Journal of Solid-State Circuits, Vol. 28, No. 10, pp. 1052-1055, October 1993.