| Citation: |
Wang Rong, Wang Zhigong, Xu Jian, Wu Jun, Guan Zhiqiang. A Programmable Assert Threshold Loss-of-Signal Detector for Intelligent Optical Modules[J]. Journal of Semiconductors, 2008, 29(2): 371-375.
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Wang R, Wang Z G, Xu J, Wu J, Guan Z Q. A Programmable Assert Threshold Loss-of-Signal Detector for Intelligent Optical Modules[J]. J. Semicond., 2008, 29(2): 371.
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A Programmable Assert Threshold Loss-of-Signal Detector for Intelligent Optical Modules
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Abstract
A novel, programmable assert threshold loss-of-signal detector is designed and realized for intelligent optical modules with 0.6μm 2P2M CMOS technology.The detector includes a pseudo-log received-signal-strength-indicator (RSSI) which uses a limiting amplifier in the data path of the optical receiver, a hysteresis comparator, a bandgap generator, an op-amp, and two off-chip resistors.With a 155Mbps input pseudo random sequence, this pseudo-log RSSI achieves a 60dB dynamic indicating range with a logarithmic accuracy of less than ±2dB, and a programmable assert threshold of 1~700mV with a 4dB stable hysteresis.It consumes 60mW from a single 5V supply.The chip area, including pads, is 1.1mm2. -
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