CDTA based semi Gaussian shapers for detector readout front ends

摘要

This paper presents voltage and current mode semi Gaussian (S-G) shaper circuits based on current difference transconductance amplifier (CDTA). The use of grounded capacitors makes these structures suitable for integration. The functional verification is exhibited through extensive SPICE simulations using 0.25 µm TSMC CMOS technology model parameters. The performance comparison is made in terms of total harmonic distortion, power dissipation, dynamic range, signal to noise ratio (SNR) and output noise.