Abstract
In this work we propose an efficient and a novel Instrumentation amplifier design fabricated using CMOS technology that can be used for the amplification of bio-medical signals. Instrumentation Biological amplifiers play a crucial role in biomedical devices like hearing aids, pacemaker etc. An instrumentation amplifier with current feedback and Current re-use topology along with the Chopper Offset-stabilization technique which was used in op-amps will also be extended to current-feedback instrumentation amplifiers, will help us to minimize and eliminate the flicker (1/f) noise and the offset voltages that will occur during the design of the feedback amplifiers. The gain mismatch problems that usually occurs due to the use of Current re -use topology was also minimized by the use of dynamic element matching technique that will be described in the paper. The design is simulated using Cadence Spectre tool. The Instrumentation amplifier final layout is designed in Cadence Layout editor with 0.18um CMOS technology.
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