Low voltage and low power CMOS exponential-control variable-gain amplifier
A compact, low voltage, low power and wide output operating range CMOS exponential-control variable-gain amplifier has been presented. The gain control range of the proposed variable-gain amplifier can be about 50.7 dB while the maximum linearity error is about -1.09%. For the case of supply voltage V-DD = 2V, the maximum power dissipation is only 1.6 muW. The proposed circuit has been fabricated in a 0.5 mum 2p2m N-well CMOS process. Experimental results are given to confirm the feasibility of the proposed variable gain amplifier. The proposed circuit is expected to be useful in analog signal processing applications.
low voltage cmos low power exponential-control vga