Charge amplifier circuit diagram OPA128


Posted on Nov 10, 2015

The so-called charge amplifier means for amplifying the signal charge from the piezoelectric device amplifying circuit . Such high internal impedance


Charge amplifier circuit diagram OPA128
Click here to download the full size of the above Circuit.

of the amplifier signal source, while its charge very weak signal, the current source is formed only pA level, which requires a charge amplifier with a high input resistance and low bias current, otherwise when the amplifier bias current and signal current is similar to the bias current signal may be overwhelmed, and can not achieve normal zoom. Further, high-impedance (1012 ) in the usual sense amplifier circuit can not be used. Often used for this type of electrostatic integrated operational amplifier OPA128 amplifier circuit composed. As shown for the charge amplifier OPA128 constituted.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Analogue Pulse Counter Schematic
Dual limit comparator
Nokia 6500 Camera Problem Picture Help
power-amplifier 2
Revised version of LM35 based digital temperature meter
4 ~ 20mA transmitter circuit diagram TMP35 temperature
It can produce 10mV- compensation voltage temperature compensation voltage generating circuit



Top