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An 850 nm wavelength monolithic integrated photoreceiver with a single-power-supplied transimpedance amplifier based on GaAs PHEMT technology

Xianjie Li, Jin‐Ping Ao, Rong Wang, Wei-Ji Liu, Zhigong Wang, Qingming Zeng, Shiyong Liu, Chunguang Liang

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Abstract

An 850 nm wavelength monolithic integrated photoreceiver with a novel single-power-supplied transimpedance amplifier is reported based on 0.8 /spl mu/m depleted GaAs PHEMT technology. The IC consists of an MSM photodetector and a transimpedance amplifier with a 50 ohm-matched differential output. The MSM PD on the chip shows a dark current of 2.0 nA as well as a responsivity of 0.30 A/W under a bias of 3.5 V. The TIA shows a transimpedance gain of more than 58 dB/spl Omega/ with a -3 dB bandwidth of 2.0 GHz. Opening eye diagrams are demonstrated at bit-rates of 1.25 Gbit/s and 2.5 Gbit/s under a +5 V supply.

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What this paper is about

An 850 nm wavelength monolithic integrated photoreceiver with a novel single-power-supplied transimpedance amplifier is reported based on 0.8 /spl mu/m depleted GaAs PHEMT technology. The IC consists of an MSM photodetector and a transimpedance amplifier with a 50 ohm-matched differential output. The MSM PD on the chip shows a dark current of 2.0 nA as well as a responsivity of 0.30 A/W under a bias of 3.5 V. The TIA shows a transimpedance gain of more than 58 dB/spl Omega/ with a -3 dB bandwidth of 2.0 GHz. Opening eye diagrams are demonstrated at bit-rates of 1.25 Gbit/s and 2.5 Gbit/s under a +5 V supply.

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Available abstract

An 850 nm wavelength monolithic integrated photoreceiver with a novel single-power-supplied transimpedance amplifier is reported based on 0.8 /spl mu/m depleted GaAs PHEMT technology. The IC consists of an MSM photodetector and a transimpedance amplifier with a 50 ohm-matched differential output. The MSM PD on the chip shows a dark current of 2.0 nA as well as a responsivity of 0.30 A/W under a bias of 3.5 V. The TIA shows a transimpedance gain of more than 58 dB/spl Omega/ with a -3 dB bandwidth of 2.0 GHz. Opening eye diagrams are demonstrated at bit-rates of 1.25 Gbit/s and 2.5 Gbit/s under a +5 V supply.

Key concepts: Transimpedance amplifier, Responsivity, High-electron-mobility transistor, Optoelectronics, Gigabit, Amplifier, Photodetector, Bandwidth (computing)

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An 850 nm wavelength monolithic integrated photoreceiver with a single-power-supplied transimpedance amplifier based on GaAs PHEMT technology — Research Paper | ScholarLens