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.
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.
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May enable portable biopotential monitors; leaves open clinical validation in ambulatory settings.
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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