Design of OTA based Chebyshev 5th Order Low Pass Filter in 0.18µm CMOS Technology
Author(s) : D.S AJNAR, GAURAV BHARGAVA, NEERAJ SHRIVASTAVA, PRAMOD KUMAR JAIN
Abstract
The design of OTA based low pass filter for video applications in Broadband Communication is described in this paper. A low-pass, fifth-order Chebyshev filter based on the Folded Cascode Operational Transconductance Amplifier in 0.18 um CMOS process is designed. Folded Cascode OTA is chosen as it allows shorting of input and output terminals with negligible swing limitations. The designed OTA has a DC gain of 72.75dB and provides a Unity Gain Bandwidth of 17MHz.The filter designed using this OTA has a passband frequency response of 9.2MHz and gain of 0dB. Design and simulation of the circuit is done in Cadence spectre environment using UMC 0.18 μm CMOS technology.
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