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SY88813V Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY88813V Datasheet(HTML) 1 Page - Micrel Semiconductor |
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1 / 8 page  1 SY88813V Micrel, Inc. M9999-072505 hbwhelp@micrel.com or (408) 955-1690 3.3V/5V 155Mbps PECL LOW POWER LIMITING POST AMPLIFIER WITH PECL SIGNAL DETECT SY88813V Rev.: B Amendment: /0 Issue Date: July 2005 TYPICAL APPLICATIONS CIRCUIT APPLICATIONS s 155Mbps SONET/SDH s Small form factor transceivers s High-gain line driver and line receiver s Single 3.3V or 5V power supply s Up to 155Mbps operation s Low noise PECL data outputs s Chatter-free PECL Signal Detect (SD) output s TTL /EN input s Programmable SD level set (SD LVL) s Available in a tiny 10-pin MSOP (3mm) package FEATURES DESCRIPTION The SY88813V low power limiting post amplifier is designed for use in fiber-optic receivers. The device connects to typical transimpedance amplifiers (TIAs). The linear signal output from TIAs can contain significant amounts of noise and may vary in amplitude over time. The SY88813V quantizes these signals and outputs PECL level waveforms. The SY88813V operates from a single +3.3V or +5V power supply, over temperatures ranging from –40 °C to +85 °C. With its wide bandwidth and high gain, signals with data rates up to 155Mbps and as small as 5mV PP can be amplified to drive devices with PECL inputs. The SY88813V generates a PECL signal-detect output. A programmable signal-detect level set pin (SD LVL) sets the sensitivity of the input amplitude detection. SD asserts high if the input amplitude rises above the threshold set by SD LVL and deasserts low otherwise. /EN deasserts the true output signal without removing the input signal. Typically 4.6dB SD hysteresis is provided to prevent chattering. VCC /EN GND GND To CDR SY88813V 3k Ω From Transimpedance Amp. DOUT /DOUT VREF VCC SDLVL DIN /DIN 0.1 µF 0.1 µF 0.1 µF 0.1 µF SD 50 Ω Rpd 50 Ω 100 Ω Rpd Rpd For 3.3V, Rpd = 120Ω For 5V, Rpd = 220Ω |
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