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SY88973BL

Micrel Semiconductor
Part Number SY88973BL
Manufacturer Micrel Semiconductor
Description CML Low Power Limiting Post Amplifier
Published May 2, 2007
Detailed Description 3.3V 3.2Gbps CML Low Power Limiting Post Amplifier with TTL LOS SY88973BL General Description Features The SY88973BL ...
Datasheet PDF File SY88973BL PDF File

SY88973BL
SY88973BL


Overview
3.
3V 3.
2Gbps CML Low Power Limiting Post Amplifier with TTL LOS SY88973BL General Description Features The SY88973BL low-power, limiting post amplifier is • Multi-rate up to 3.
2Gbps operation designed for use in fiber optic receivers.
The device connects • Wide gain-bandwidth product to typical transimpedance amplifiers (TIAs).
The linear signal • 38dB differential gain output from TIAs can contain significant amounts of noise • 2GHz 3dB bandwidth and may vary in amplitude over time.
The SY88973BL • Low noise 50Ω CML data outputs quantizes these signals and outputs typically 800mVPP – 800mVPP output swing voltage-limited waveforms.
– 60ps edge rates The SY88973BL operates from a single +3.
3V ±10% power – 5psRMS typ.
random jitter supply, over an industrial temperature range of –40°C to +85°C.
With its wide bandwidth and high gain, signals with – 15psPP typ.
deterministic jitter data rates up to 3.
2Gbps and as small as 10mVPP can be • Chatter-free, Loss-of-Signal (LOS) output amplified to drive devices with CML inputs or AC-coupled – No internal pull-up resistor− fully compliant with PECL inputs.
SFP MSA The SY88973BL incorporates a loss-of-signal (LOS), open– 4.
6dB electrical hysteresis collector TTL output with external 4.
75kΩ to 10kΩ pull-up – OC-TTL output resistor to fully comply with SFP MSA.
A programmable, loss• Programmable LOS sensitivity using single external of-signal level-set pin (LOSLVL) sets the sensitivity of the resistor input amplitude detection.
LOS asserts high if the input • Internal 50Ω data input termination amplitude falls below the threshold sets by LOSLVL andwww.
DataSheet4U.
com de• TTL /EN input allows feedback from LOS asserts low otherwise.
LOS can be fed back to the enable (/EN) input to maintain output stability under a loss-of-signal • Wide operating range: condition.
/EN de-asserts the true output signal without – Single 3.
3V ±10% removing the input signal.
Typically, 4.
6dB LOS hysteresis is – –40°C to +85°C industrial temperature ...


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