Abstract:Simulation and testing methods for fully-differential operational transconductance amplifier (OTA) circuits are described. Difficulties of measuring OTA performance caused by the generally large bandwidth of OTAs and the need for measuring current signals are illustrated. A fully-differential OTA fabricated through the MOSIS 2 -€ 8 technology is the demonstration circuit for simulations and tests. This OTA has a simulated 3 dB frequency of 1 GHz with a load of 100 . The simulation softwares are SPICE, Version … Show more
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