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CMOS low-power, wide-linear-range, well-input differential and transconductance amplifiers
CMOS low-power, wide-linear-range, well-input differential and transconductance amplifiers
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机译：CMOS低功耗，宽线性范围，输入良好的差分和跨导放大器
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摘要
A novel family of CMOS differential and transconductance amplifiers has wide input linear range and is suited for low power operation. The wide linear range is obtained by "widening the tanh", or decreasing the ratio of transconductance to bias current, by combining the three techniques of (a) using the well terminals of the input differential-pair transistors as the amplifier inputs; (b) using the feedback technique known as source degeneration; and (c) using the novel feedback technique of gate degeneration. According to one preferred embodiment of the present invention a compact transconductance amplifier having a linear range of .+-.1 V was achieved in an 11-transistor circuit with a DC-input operating range of 1 V-5 V in a low-power subthreshold CMOS technology in a standard 2 micron process.
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