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SY84113BU Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY84113BU Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 8 page SY84113BU Low Power 2.5V 1.25Gbps Limiting Post Amplifier with Ultra Wide LOS Range Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( 408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com General Description The SY84113BU low power limiting post amplifier is designed for use in fiber-optic optical modules for multirate applications up to 1.25Gbps. The device connects to a typical transimpedance amplifier (TIA) and can produce output signals to CML-level waveforms. Intended for the GbE and Fibre Channel applications, the SY84113BU offers a wide LOS range. It is able to detect input signals for as low as 5mVpp and as high as 100mVpp. The SY84113BU is intended to be used in AC-coupled input applications. The SY84113BU generates a Loss-of-Signal (LOS) open-collector TTL output. A programmable Loss-of- Signal level set pin (LOSLVL) sets the sensitivity of the input amplitude detection. LOS asserts high if the input amplitude falls below the threshold set by LOSLVL and de-asserts low otherwise. The enable input (/EN) de- asserts the true output signal without removing the input signal. The LOS output can be fed back to the /EN input to implement the squelch function that maintains output stability under a loss-of-signal condition. The SY84113BU operates on a single 2.5V power supply and offers ultra low power consumption. This device is perfectly suited to meet the stringent power requirements of the CSFP/SFP/SFF optical modules. All support documentation can be found on Micrel’s web site at: www.micrel.com. Features • Ultra wide LOS Range (5mVpp to 100mVpp) • Single 2.5V power supply • Ultra low power consumption (55mW typ) • 125Mbps to 1.25 Gbps operation • Low-noise CML data outputs • TTL /EN input • Programmable LOS level (LOSLVL) • Internal 50Ohm termination • Available in a tiny 3mm x 3mm QFN package Applications • Gigabit Ethernet • Fibre Channel • GEPON Markets • Datacom/telecom • Compact SFP/SFF Optical transceiver • SFP/SFF Optical transceiver _________________________________________________________________________________________________________ Typical Application January 2011 M9999-011711-A hbwhelp@micrel.com or (408) 955-1690 |
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