LAUSR

In this paper, a new current-mode instrumentation amplifier is presented using a single current differencing current controlled current conveyor building block and one grounded resistor. The proposed instrumentation amplifier (IA) can easily be cascaded due to the possession of low impedance current input, and high impedance current output. It offers a high differential gain (73.35 dB) and high bandwidth (BW), 44.8 MHz. Moreover, the common-mode rejection ratio (CMRR) is also very high (93.58 dB), and CMRR BW 5.5 kHz. Power dissipation is found to be low at 132 µW. Furthermore, the electronic tuning of gain is the added feature of the circuit. The non-ideality performance of IA is investigated. The proposed IA functionality is verified through the Cadence ORCAD PSPICE simulator using 0.18 µm TSMC (Level 7) technology parameters. The circuit's workability has also been presented experimentally using commercially available current feedback operational amplifier ICs AD844. Comparison of the performances such as differential gain, BW, CMRR, power consumption, and ease of cascading is reported.