A 10-channel 300-Mb/s/ch replica TIA array with equalizer in 0.18-μm CMOS
- Resource Type
- Conference
- Authors
- Ying, He; Hong, Chaerin; Lee, Kyungmin; Kim, Dayoung; Kim, Seung Hoon; Park, Sung Min
- Source
- 2015 International SoC Design Conference (ISOCC) SoC Design Conference (ISOCC), 2015 International. :329-330 Nov, 2015
- Subject
- Components, Circuits, Devices and Systems
Arrays
Bandwidth
Optical receivers
Gain
CMOS integrated circuits
Capacitors
Equalizers
bandwidth
CMOS
EQ
NIRS
replica TIA
TZ gain
- Language
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.