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A 10-channel 300-Mb/s/ch replica TIA array with equalizer in 0.18-μm CMOS
- A 10-channel 300-Mb/s/ch replica TIA array with equalizer in 0.18-μm CMOS
- Ying H.; Hong C.; Lee K.; Kim D.; Kim S.H.; Park S.M.
- Ewha Authors
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- ISOCC 2015 - International SoC Design Conference: SoC for Internet of Everything (IoE)
- bandwidth; CMOS; EQ; NIRS; replica TIA; TZ gain
- Institute of Electrical and Electronics Engineers Inc.
- This paper presents a 10-channel optical receiver array for Near-InfraRed Spectroscopy (NIRS) Systems. Each channel consists of a replica transimpedance amplifier (TIA) followed by an adjustable linear equalizer (EQ). The replica TIA achieves a high transimpedance gain of 94.6 dBω and a bandwidth of 85 MHz. To obtain wider bandwidth, a two-stage fully differential equalizer with tunable capacitor banks is exploited. Post-layout simulations reveal the total transimpedance gain of 100 dBω, the -3-dB bandwidth of 200 MHz, and the input noise current spectral density of 2 pA/√Hz for the DC current consumption of 9.4 mW per channel with a single 1.8-V supply. The proposed front-end of NIRS preamplifier is implemented using 0.18-μm CMOS technology. © 2015 IEEE.
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