SY88813VKG Microchip

3.3V/5V 155Mbps PECL LOW POWER SY88813V Micrel, Inc. LIMITING POST AMPLIFIER WITH PECL SY88813V SIGNAL DETECT FEATURES DESCRIPTION Single 3.3V or 5V power supply The SY88813V low power limiting post amplifier is Up to 155Mbps operation designed for use in fiber-optic receivers. The device connects to typical transimpedance amplifiers (TIAs). The linear signal Low noise PECL data outputs output from TIAs can contain significant amounts of noise Chatter-free PECL Signal Detect (SD) output and may vary in amplitude over time. The SY88813V TTL /EN input quantizes these signals and outputs PECL level waveforms. Programmable SD level set (SD ) LVL The SY88813V operates from a single +3.3V or +5V Available in a tiny 10-pin MSOP (3mm) package power supply, over temperatures ranging from 40C to +85C. With its wide bandwidth and high gain, signals with data rates up to 155Mbps and as small as 5mV can be PP amplified to drive devices with PECL inputs. The SY88813V generates a PECL signal-detect output. A programmable signal-detect level set pin (SD ) sets LVL the sensitivity of the input amplitude detection. SD asserts APPLICATIONS high if the input amplitude rises above the threshold set by SD and deasserts low otherwise. /EN deasserts the true LVL 155Mbps SONET/SDH output signal without removing the input signal. Typically Small form factor transceivers 4.6dB SD hysteresis is provided to prevent chattering. High-gain line driver and line receiver TYPICAL APPLICATIONS CIRCUIT R pd V CC SD /EN D D 0.1 F 0.1 F IN OUT From To Transimpedance /D /D 0.1 F CDR IN OUT 0.1 F SY88813V Amp. SD V R R 50 50 LVL REF pd pd V CC GND GND 100 3k For 3.3V, R = 120 pd For 5V, R = 220 pd Rev.: B Amendment: /0 M9999-072505 Issue Date: July 2005 1 hbwhelp micrel.com or (408) 955-1690SY88813V Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information /EN 1 10 VCC Package Operating Package Lead DIN 2 9 DOUT Part Number Type Range Marking Finish /DIN 3 8 /DOUT SY88813VKC K10-1 Commercial 813V Sn-Pb (1) VREF 4 7 /LOS SY88813VKCTR K10-1 Commercial 813V Sn-Pb LOSLVL 5 6 GND SY88813VKG K10-1 Industrial 813V with Pb-Free Pb-Free bar-line indicator NiPdAu (1) 10-Pin MSOP (K10-1) SY88813VKGTR K10-1 Industrial 813V with Pb-Free Pb-Free bar-line indicator NiPdAu Note: 1. Tape and Reel. PIN DESCRIPTION Pin Number Pin Name Type Pin Function 1 /EN TTL Input: Enable: Deasserts true data output when high. Default is high. 2 DIN Data Input True data input. 3 /DIN Data Input Complementary data input. 4 VREF Reference voltage. 5 SDLVL Input Signal-Detect Level Set: A voltage between V and V on this pin CC REF sets the threshold for the data input amplitude at which SD will be asserted. 6 GND Ground Device ground. 7 SD PECL Output Signal-Detect: Asserts high when the data input amplitude rises above the threshold set by SD . LVL 8 /DOUT PECL Output Complementary data output. 9 DOUT PECL Output True data output. 10 VCC Power Supply Positive power supply. M9999-072505 2 hbwhelp micrel.com or (408) 955-1690