1-V CMOS Class AB Current Mirror
نویسنده
چکیده
A CMOS class AB current mirror whose supply requirements are restricted to one threshold voltage plus three saturation voltages is presented. The circuit uses two poly resistors and two auxiliary differential amplifiers to achieve low-voltage operation, as well as control of quiescent currents and input bias voltage. A design example is implemented in a 0.5-μm standard technology and uses a 1-V supply. It exhibits input and output resistances of 5 kΩ and 3.6 MΩ, respectively and a DC current gain of 0.03 dB over a bandwidth of 140 MHz.
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