An Improved Current Differencing Transconductance Amplifier with Dual Input Dual Output Operation and its Potential Application

Abstract This research article presents an extended Current Differencing Transconductance Amplifier (CDTA) designed with a Flipped Voltage Follower (FVF) and an Arbel-Goldminz OTA (AG-OTA), and named Dual Input Dual Output (DIDO-CDTA). The trans-conductance (gm) of the DIDO-CDTA can be electronically tuned, offering practical implications for signal processing circuits. The entire structure operates on a 0.6V supply voltage. The workability of the DIDO-CDTA is validated through DC and AC analysis using the Cadence Virtuoso simulator with 0.18 µm gpdk technology. The designed active block is also used to implement Low Pass Filter (LPF) and High Pass Filter (HPF) using the concept of Wave Active Filter (WAF) and dual-mode integrator circuits.