CMOS inverters linear amplifier circuit

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This circuit is also Crossed to: RF Amplifiers

CMOS inverters can be used as linear amplifiers where negative feedback is applied. Best linearity is achieved with feedback applied around three inverters which gives almost perfect linearity up to a dynamic output of 5 V peak to peak with a 10 V supply rail The gain is set by the ratio of Rl and R2 and the values are typical for a gain of 100. The high frequency response with the values given is almost flat to 20 kHz. The frequency response is determined by Cl and C2..

This tour is not suitable for low level signals because the signal to noise ratio is only approx. 50 dB to 5 V output with the Pop values shown.

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