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Transimpedance Amplifier

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nate0niel

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Guys, i have a problem. I want to design a read-out circuit of MEMS-Gyroscope. the circuit will be realized from discrete components. the problem is output from MEMS-gyro is current with nano-scale. so i want to convert it into voltage scale. anybody knows what opamp i have to use? ( with low noise).
thank you..
 

andre_teprom

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A resistor device implements that requirements ( Input=current / Output=voltage ).
You - of course - should connect it at an Operational Amplifier at Buffer topology, in order to eliminate the load effect.

+++
 

microwavefly

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switched capacitor opamp? I know some 0.1uA opamp, but nano-scale current, the thermal noise of capacitor and resistor ...
 

FvM

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Parameters that must be known for a serious discussion:
- signal frequency and magnitude
- source impedance
- intended signal-to-noise ratio
- other constraints (if any) like supply voltage and current consumption, size
 

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