A new CMOS fully differential bandpass amplifier (BPA) based on the structure of a transresistance (Rm) amplifier and capacitor is proposed and analysed. In this design, the Rm amplifier is realised by a simple inverter with tunable shunt-shunt feedback MOS resistor and tunable negative resistance realised by crosscoupled MOS transistors in parallel with a current source. The capacitor is in se...

This paper describes the design of Current Mode Instrumentation Amplifier (CMIA) for ECG signal Acquisition system. The CMIA topology is based on voltage mode operational amplifier (op-amp) power supply current sensing technique. Op amp mismatch and precise current mirrors are two design challenges of this topology. High Common Mode Rejection Ratio (CMRR) and Power Supply Rejection Ratio PSRR i...

This paper presents a chopper instrumentation amplifier for interfacing precision thermistor bridges. For high CMRR and DC gain, the amplifier employs a three-stage current-feedback topology with nested-Miller compensation. By chopping both the input and intermediate stages of the amplifier, a 1 mHz noise corner was achieved at an input-referred noise power spectral density (PSD) of 15 nV/ Hz. ...

EWEE include following parts: GUARD and Driven-Right-Leg (DLR) systems [2, 3, 6]. First system protects wire connections (on PCB, silver contacts with differential amplifier) against electromagnetic influence. The second provides better Common Mode Rejection Rate (CMRR) coefficient in range of 20-50dB higher. Another parts of system are: silver contacts [5], instrumentation amplifier with perma...

This paper describes the design of a current mode instrumentation amplifier using second generation current conveyor(CCII). The current mode approach offers several advantages such as high speed, better noise performance and lower power consumption as compared to conventional voltage mode approach. The design is implemented in standard 65 nm CMOS technology. Simulation is done in cadence enviro...

This paper presents the designing of a fully differential folded cascode operational transconductance amplifier (OTA) with common mode feedback circuit (CMFB). The designed OTA is operated in sub-threshold region to reduce the power consumption. The simulation is carried out in CADENCE environment using 150nm CMOS. The simulation result shows the DC gain of 82 dB with UGBW of 768 KHz, CMRR of 1...

Abstract This research work designs a prototype of an active-loaded differential amplifier using Double-Gate (DG) MOSFETs. The following text outlines the design with testing in developing conceptual understanding and its requirement. designed model uses mathematical models while assessing possible limitations DG MOSFET. exhibits gain 4 V/V, bandwidth 1 MHz. common-mode output values were teste...

A low power and low noise front end chopped instrumentation amplifier for portable electrocardiogram recording system is presented. The circuit is based on the chopper technique which is implemented using folded cascode structure that has significant lower power consumption than the predecessor’s approaches while keeping the performance unchanged. The chopper switches modulate noise from a low ...