CMOS Inverter Based Voltage Differencing Transconductance Amplifier and Its Application as a Filter
Garima Varshney, Praveen Kumar and Richa Srivastava
This paper introduces a new realization of voltage differencing transconductance amplifier (VDTA) that exhibits high linearity and a wide linear input range. This VDTA structure leverages the use of CMOS inverters operating in the transconductance mode. The interrelationships of its ports have been examined through SPICE simulations using 180 nm CMOS technology parameters. Noteworthy advantages of the proposed VDTA include a significantly extended linear operating range, and the ease of synthesis using digital CMOS inverters. These benefits set it apart from the conventional VDTA implementations, making it a promising choice for various applications. Additionally, the applicability of the proposed VDTA is verified by simulating its use as a MISO biquad filter.
Keywords: CMOS Inverter, voltage differencing transconductance amplifier (VDTA), linearity, transconductance-mode