Fully-integrated transimpedance amplifier for photoplethysmographic signal processing with two-stage Miller capacitance multiplier

Fully-integrated transimpedance amplifier for photoplethysmographic signal processing with two-stage Miller capacitance multiplier

A two-stage Miller capacitance multiplier for compensation is proposed to implement an ultra-low frequency fully-integrated transimpedance amplifier (TIA). With the proposed multiplier, the TIA achieves a passband gain of 89 dBV, a DC current rejection ranging from 0.5 μA to 85 μA and a -3 dB highpa...

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Veröffentlicht in:Electronics letters 2010-05, Vol.46 (11), p.1-1
Hauptverfasser: Li, Y, Wong, A K Y, Zhang, Y-T
Format: Artikel
Sprache:eng
Schlagworte:
Amplification
Amplifiers
Capacitance
Direct current
Gain
Multipliers
Noise levels
Rejection
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Zusammenfassung:A two-stage Miller capacitance multiplier for compensation is proposed to implement an ultra-low frequency fully-integrated transimpedance amplifier (TIA). With the proposed multiplier, the TIA achieves a passband gain of 89 dBV, a DC current rejection ranging from 0.5 μA to 85 μA and a -3 dB highpass cutoff frequency of 0.5 Hz to 9.5 Hz. This corresponds to an improvement of six times in DC current rejection range compared with previous techniques.
ISSN:0013-5194
1350-911X