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SY88973BL 데이터시트(Datasheet) 1 Page - Micrel Semiconductor

부품명 SY88973BL
상세내용  3.3V 3.2Gbps CML Low Power Limiting Post Amplifier with TTL LOS
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제조사  MICREL [Micrel Semiconductor]
홈페이지  http://www.micrel.com
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3.3V 3.2Gbps CML Low Power
Limiting Post Amplifier with TTL LOS
SY88973BL
MLF and MicroLeadFrame are registered trademark of Amkor Technology
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
February 2007
M9999-020207-A
hbwhelp@micrel.com or (408) 955-1690
General Description
The SY88973BL low-power, limiting post amplifier is
designed for use in fiber optic receivers. The device connects
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 SY88973BL
quantizes these signals and outputs typically 800mVPP
voltage-limited waveforms.
The SY88973BL operates from a single +3.3V ±10% power
supply, over an industrial temperature range of –40°C to
+85°C. With its 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 inputs or AC-coupled
PECL inputs.
The SY88973BL incorporates a loss-of-signal (LOS), open-
collector TTL output with external 4.75kΩ to 10kΩ pull-up
resistor to fully comply with SFP MSA. A programmable, loss-
of-signal level-set pin (LOSLVL) sets the sensitivity of the
input amplitude detection. LOS asserts high if the input
amplitude falls below the threshold sets by LOSLVL and de-
asserts low otherwise. LOS can be fed back to the enable
(/EN) input to maintain output stability under a loss-of-signal
condition. /EN de-asserts the true output signal without
removing the input signal. Typically, 4.6dB LOS hysteresis is
provided to prevent chattering.
Please see Micrel’s website at www.micrel.com for a
complete selection of optical module ICs.
All support documentation can be found on Micrel’s web site
at: www.micrel.com.
Typical Performance
Features
• Multi-rate up to 3.2Gbps operation
• Wide gain-bandwidth product
• 38dB differential gain
• 2GHz 3dB bandwidth
• Low noise 50Ω CML data outputs
– 800mVPP output swing
– 60ps edge rates
– 5psRMS typ. random jitter
– 15psPP typ. deterministic jitter
• Chatter-free, Loss-of-Signal (LOS) output
– No internal pull-up resistor− fully compliant with
SFP MSA
– 4.6dB electrical hysteresis
– OC-TTL output
• Programmable LOS sensitivity using single external
resistor
• Internal 50Ω data input termination
• TTL /EN input allows feedback from LOS
• Wide operating range:
– Single 3.3V ±10%
–40°C to +85°C industrial temperature range
• Available in a tiny 3mm x 3mm 16-pin MLF® package
Applications
• 1.25Gbps and 2.5Gbps Gigabit Ethernet
• 1.062Mbps and 2.125Gbps Fibre Channel
• 155Mbps, 622Gbps, 1.25Gbps, and 2.5Gbps
SONET/SDH
• Gigabit interface converter (GBIC)
• Small form factor (SFF) and small form factor pluggable
(SFP) transceivers
• Parallel 10G Ethernet
• High-gain line driver and line receiver
Markets
• Telecom/datacom
• Optical transceiver




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