Key result
A new AC-coupled chopped instrumentation amplifier for biopotential acquisition achieved 120 dB CMRR and 57 nV/√Hz input-referred voltage noise density while consuming 11.1 µA from a 3 V supply.
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May enable portable biopotential monitors; leaves open clinical validation in ambulatory settings.
The proposed analog readout front-end achieves high CMRR and low noise with low power consumption, making it suitable for portable biopotential acquisition systems such as ambulatory ECG.
Yazıcıoğlu et al. (2007) studied this question. AC-coupled chopped instrumentation amplifier (ACCIA) was evaluated. A new AC-coupled chopped instrumentation amplifier for biopotential acquisition achieved 120 dB CMRR and 57 nV/√Hz input-referred voltage noise density while consuming 11.1 µA from a 3 V supply.
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