A PWM based readout circuit for optical sensors with adaptive frequency control

Kangyeob Park; Won-Seok Oh

doi:10.1587/elex.15.20180613

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A PWM based readout circuit for optical sensors with adaptive frequency control

Kangyeob Park, Won-Seok Oh

著者情報

キーワード: Pulse-width modulation, current to PWM converter, optical sensor, photodiode, trans-impedance amplifier, CMOS

ジャーナルフリー早期公開

論文ID: 15.20180613

DOI https://doi.org/10.1587/elex.15.20180613

この記事には本公開記事があります。

The final version of this article is now available: Vol. 15 (2018), No. 16 pp. 20180613-20180613

詳細

抄録

This paper proposes a pulse-width modulation-based readout circuit for optical sensors which adopts adaptive frequency control technique to enhance input dynamic range of current sensing systems. The proposed readout circuit is designed and fabricated using a 65nm CMOS process. The readout IC achieves 100dB of dynamic range in current sensing system by adaptively controlling the frequency of operating clock.

責任著者(Corresponding author)

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