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SY88309BL

Micrel Semiconductor
Part Number SY88309BL
Manufacturer Micrel Semiconductor
Description 3.2Gbps PECL Limiting Post Amplifier
Published Jul 3, 2015
Detailed Description SY88309BL 3.3V, 3.2Gbps PECL Limiting Post Amplifier with Wide Signal-Detect Range General Description The SY88309BL lo...
Datasheet PDF File SY88309BL PDF File

SY88309BL
SY88309BL


Overview
SY88309BL 3.
3V, 3.
2Gbps PECL Limiting Post Amplifier with Wide Signal-Detect Range General Description The SY88309BL low-power limiting post amplifiers are designed for use in fiber-optic receivers.
These devices connect 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 SY88309BL quantizes these signals and output PECL-level waveforms.
The SY88309BL operates from a single +3.
3V power supply, over temperatures ranging from –40oC to +85oC.
With their wide bandwidth and high gain, signals with data rates up to 3.
2Gbps, and as small as 10mVpp, can be amplified to drive devices with CML or PECL inputs.
It generates a Signal Detect (SD) open-collector TTL output.
The SD function is optimized to detect a larger and wider input range, as shown in the characteristic curve on page 6.
A programmable signal-detect level set pin (SDLVL) sets the sensitivity of the input amplitude detection.
SD asserts high if the input amplitude rises above the threshold sets by SDLVL and de-asserts low otherwise.
The SD output can be fed back to the EN input to maintain stability.
Typically, 3.
5dB LOS/SD hysteresis is provided to prevent chattering.
Datasheet and support documentation can be found on Micrel’s web site at: www.
micrel.
com.
Features • Signal Detect circuit optimized to detect a larger and wider input range (20mVPP-140mVPP) • Chatter-free Open-Collector TTL Signal-Detect (SD) • Single 3.
3V power supply • 155Mbps to 3.
2Gbps operation • Low-noise PECL data outputs • Programmable SD level set (SDLVL) • Available in a tiny 10-pin EPAD-MSOP and 16-pin QFN package Applications • PON • Gigabit Ethernet • 1X and 2X Fibre Channel • SONET/SDH:OC-3/12/24/48 – STM 1/4/8/16 • High-gain line driver and line receiver Markets • FTTX • Optical transceivers • Datacom/Telecom • Low-gain TIA interface • Long-reach FOM Micrel Inc.
• 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (4...


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