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Capacitively-coupled Chopper Instrumentation Amplifiers input impedance simulation

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Alice Lee

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Hi,all. I am studying the paper attached. i am wondering how to simulate the input impedance of CCIA in cadence. does anyone know?
 

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  • A_1.8_mu_W_60_nV_surd_Hz_Capacitively-Coupled_Chopper_Instrumentation_Amplifier_in_65_nm_CMOS_...pdf
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Cadence Spectre has special simulation modes for switched circuits like PAC and PSS. Review user guide and literature about switched capacitor circuit design.
 
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FvM said:
Cadence Spectre has special simulation modes for switched circuits like PAC and PSS. Review user guide and literature about switched capacitor circuit design.
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thanks a lot. i will work on PAC/PSS analysis.
 
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You can either use PSS or a simple transient sim. Simply sweep the input voltage and check the average current going through the input capacitors. Then you can obtain the input impedance.
 
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arthorios said:
You can either use PSS or a simple transient sim. Simply sweep the input voltage and check the average current going through the input capacitors. Then you can obtain the input impedance.
Click to expand...
thank you. i used pss+pac to check the voltage and current that can get a impedance. and i think pss+psp also can help
 
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