J. Semicond. > 2008, Volume 29 > Issue 2 > 371-375

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A Programmable Assert Threshold Loss-of-Signal Detector for Intelligent Optical Modules

Wang Rong, Wang Zhigong, Xu Jian, Wu Jun and Guan Zhiqiang

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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.

Key words: loss-of-signalpseudo-logarithmicreceived-signal-strength-indicator

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    Received: 18 August 2015 Revised: 12 September 2007 Online: Published: 01 February 2008

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      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, In Press. 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.Export: BibTex EndNote
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      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, In Press.

      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.
      Export: BibTex EndNote

      A Programmable Assert Threshold Loss-of-Signal Detector for Intelligent Optical Modules

      • Received Date: 2015-08-18
      • Accepted Date: 2007-07-24
      • Revised Date: 2007-09-12
      • Published Date: 2008-01-31

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