An auto-zeroing current-starved floating-gate band pass filter

In this paper we present Auto-Zeroing Current-Starved Floating-Gate Amplifier(AZCSA). In addition to gain, the amplifier allows frequency band adjustment, suited for designing time-continuous analog filters. The Auto-Zeroing Current-Starved Floating-Gate Amplifier(AZCSA) is based on two previously presented floating-gate amplifiers. The AZCSA uses the advantages of these two amplifiers regarding the frequency band adjustment to improve the possibility of adjusting the lowest and highest cut-off frequencies. The AZCSA enjoys low component spread and compactness, containing only minimum size transistors and capacitors. The simulations presented in this paper are valid for the 90 nm CMOS transistor models from STM having a VDD equal to 1.2 V and threshold voltage of 0.25 V.