SY88903AL

SY88903AL 3.3V, Burst Mode 1.25Gbps PECL HighSensitivity Limiting Post Amplifier with TTL Loss-of-Signal General Description Features The SY88903AL, burst mode, high-sensitivity limiting Single 3.3V power supply post amplifier is designed for use in fiber-optic receivers, Fast LOS release/assert (<500ns) time for PON specially optimized for passive optical networks (PONs). applications The device connects to typical transimpedance 622Mbps to 1.25Gbps operation amplifiers (TIAs). The linear signal output from TIAs can Low-noise PECL data outputs contain significant amounts of noise and may vary in High gain LOS amplitude over time. The SY88903AL quantizes these signals and outputs PECL level waveforms. Chatter-free Open-Collector TTL signal detect (LOS) output with internal 4.75kΩ pull-up resistor The SY88903AL operates from a single +3.3V power supply, over temperatures ranging from –40oC to +85oC. TTL /EN input Signals with data rates from 622Mbps up to 1.25Gbps, Programmable LOS level set (LOSLVL) and as small as 5mVpp, can be amplified to drive Available in a tiny 10-pin MSOP package devices with PECL inputs. The SY88903AL generates a Loss-of-Signal (LOS) Applications open-collector TTL output. A programmable Loss-of GPON/GEPON/EPON Signal level set pin (LOSLVL) sets the sensitivity of the input amplitude detection. LOS asserts high if the input Gigabit Ethernet, 1062Mbps Fibre Channel amplitude falls below the threshold set by LOSLVL and OC-12/24...