The switched capacitor variable gain amplifier having a high gain linearity

摘要

The present invention has a high gain linear switched-capacitor relates to a variable gain amplifier, the present invention According, in the sampling phase and the sampling capacitor to share the amplification phase can reduce the voltage gain error due to capacitor mismatch by use, in the design and layout of the circuit by using the unit capacitor array has the effect that can be simplified. According to the present invention, it may simply need to control the voltage gain of less than 1 or more than 1, in accordance with, relatively reducing the kT / C noise and power consumption by a large feedback gain factor to improve amplifier performance there is an effect that.