An on-chip DC Signal Amplifier based on linear frequency modulation and demodulation

To amplify the DC signal is a discommodious issue,because of the on-chip DC signal has such properties as little swing,less coherence and likeliness to be interfered.In light of this,a "voltage-frequency-voltage" mode DC signal amplifier is proposed,in which the frequency is the carrier signal.This amplifier is highly linear,and is equipped with a high linearity "voltage-frequency" modulator and a "frequency-voltage" de-modulator.The simulation experimental results show that the DC signal amplifier amplifies the input voltage signal efficiently while achieving stable high linearity,and the DC gain is 2.4.