Key result
A folded cascode bulk driven operational transconductance amplifier achieved lower power consumption (620nW) compared to a two-stage OTA (77.26uW) in a 0.18um CMOS process.
The paper presents a comparative analysis of two OTA topologies for biomedical applications operating at 1V in 0.18um CMOS process.
May suit ultra-low-power biomedical sensors; leaves open in vivo validation before clinical use.
This paper presence a comparative analysis of two stage and folded cascode bulk driven operational trans conductance amplifier (OTA) topologies for biomedical applications are presented. A two stage bulk driven OTA and Folded cascoded OTA operated with a 1Vpower supply. Bulkdriven PMOS-transistors as an input differential opamp provides high input common-mode range (CMR). To achieve low power consumption all transistors must be operated in sub threshold region. The test results are carried out in standard gpdk180nm CMOS technologies
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A 2019 study studied this question. Folded cascode bulk driven OTA vs. Two stage bulk driven OTA was evaluated. A folded cascode bulk driven operational transconductance amplifier achieved lower power consumption (620nW) compared to a two-stage OTA (77.26uW) in a 0.18um CMOS process.
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