Transistors and Synapses: Robust, Low Power Analog Circuits in CMOS Radios and the Rabbit Retina
نویسندگان
چکیده
A simple modification to a standard CMOS Current mirror is presented, whichsignificantly reduces the amount of drain-to-source voltage required across its outputto maintain constant output current. The design uses two additional transistors to replicate the output voltage on the reference transistor, matching both VGS and VDSbetween the devices. The design was demonstrated to reduce the required headroomon the output by more than a factor of 2, and to increase output resistance by more than a factor of 5. This mirror is especially useful in low power applications where bias voltage is at a premium.
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