Single EX-CCCII based electronically tunable current mode instrumentation amplifier

Abstract

The purpose of this study is to present a new design for an electronically tunable instrumentation amplifier. The current-mode design approach is used for the proposed circuit. The proposed current-mode instrumentation amplifier employs a single Extra-X Current Controlled Current Conveyor (EX-CCCII) and a grounded resistor. This circuit design is very simple and suitable for IC integration. Because of the circuit's high output impedance, it can be cascaded with other current-mode circuits without the need for a buffer. In addition, this circuit is electronically tunable with the bias current from EX-CCCII. The proposed instrumentation amplifier provides good frequency performance with a wide bandwidth for differential gain and CMRR. The effects of non-idealities of EX-CCCII and its parasitic elements are also analysed. To validate the proposed instrumentation amplifier, various simulations are performed with the CADENCE VIRTUOSO SPECTRE simulator using 0.18 µm CMOS technology parameters.

Current-Mode Active Filter Using EX-CCCII

“…This is advantageous for applications such active filters and oscillators. The EX-CCCII can be used for applications such as oscillators [19][20][21][22][23], instrumentation amplifiers [24,25], immittance simulators [26], precision rectifiers [27], first-order filters [28][29][30], and universal filters [31][32][33][34]. This work focuses on the EX-CCCII based universal filter.…”