Introduction of Advanced Analog Circuit
Arjuna Marzuki · 2020
Many conventional analog circuits can be replaced with the dynamic analog circuit and non-linear analog circuit. The dynamic analog circuit employs the fact that charge or information can be stored on a capacitor or gate capacitance of a metal-oxide semiconductor field-effect transistor. However, the non-linear circuit exploits the non-linear characteristics of the device or sub-circuit. Programmable gain amplifiers are metal-oxide semiconductor switched-capacitor amplifiers. During the sample cycle, they place the charge on one plate of a sample capacitor with the other plate connected to a high impedance input node of the amplifier. The amplifier is connected in unity gain. The output of the amplifier will provide all the charge necessary at the input node of the amplifier to balance the charge on the sample capacitor.