This paper presents frequency agile filters based on current difference transconductance amplifier (CDTA) and voltage difference transconductance amplifier (VDTA). The proposed agile filter configurations employ grounded passive components and hence are suitable for integration. Extensive SPICE simulations using 0.25 m TSMC CMOS technology model parameters are carried out for functional verification. The proposed configurations are compared in terms of performance parameters such as power dissipation, signal to noise ratio (SNR), and maximum output noise voltage.

This paper presents frequency agile filter based on current difference transconductance amplifier (CDTA). The agile filters used in this work provide high agilty, tunability and quality factor while they are fully integrated configurations and not discrete systems. The use of grounded capacitors and resistor makes these structures suitable for integration. The functional verification is exhibited through extensive SPICE simulations using 0.25µm TSMC CMOS technology model parameters. The performance evaluation is made in terms of power dissipation, signal to noise ratio (SNR) and output noise. Index Terms--Current difference transconductance amplifier (CDTA), Frequency agile filter (FAF), Power Dissipation, Signal to Noise Ratio (SNR).I.