A radiation-hardened optical receiver chip

Xiao Zhou; Ping Luo; Linyan He; Rongxun Ling

doi:10.1587/elex.15.20180910

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A radiation-hardened optical receiver chip

Xiao Zhou, Ping Luo, Linyan He, Rongxun Ling

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Keywords: optical receiver, gain self-regulating circuit, narrow pulse amplitude detector and adjustable inverter, DTMOS reference, enclosed-gate NMOS, radiation harden

JOURNAL FREE ACCESS

2019 Volume 16 Issue 2 Pages 20180910

DOI https://doi.org/10.1587/elex.15.20180910

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Abstract

High-speed optocoupler is widely used in aerospace field, it is required to have tolerance of radiation in the application environment. The key module of optocoupler is optical receiver chip. This paper introduces a kind of radiation-hardened optical receiver chip. A transimpedance amplifier with gain self-regulating circuit, a signal amplitude detector and adjustable inverter, a reference with DTMOS and enclosed gate layout are designed for radiation hardening. The proposed chip is fabricated in a standard 0.5 µm CMOS process. Experimental results indicate that the hardened chip can still work at the total dose of 400 Krad(Si).

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