Micrel SY88903AL
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 (GENERAL DESCRIPTION
FEATURES
<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.