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SY88773VMG 데이터시트(HTML) 1 Page - Micrel Semiconductor

부품명 SY88773VMG
상세내용  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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SY88773VMG 데이터시트(HTML) 1 Page - Micrel Semiconductor

 
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1
SY88773V
Micrel, Inc.
M9999-110905
hbwhelp@micrel.com or (408) 955-1690
The SY88773V 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 SY88773V
quantizes these signals and outputs typically 800mVPP
voltage-limited waveforms.
The SY88773V operates from a single +3.3V
±10% or
+5V
±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 SY88773V incorporates a loss-of-signal (LOS), open-
collector TTL output with internal 4.75k
Ω pull-up resistor. 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 set 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. The following table
summarizes the differences between devices in Micrel’s
latest family of Limiting Amplifiers.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Integrated 50
LOS
Active LOW
Part Number
Input Termination
or SD
or HIGH Enable
SY88773V
No
LOS
LOW
SY88823V
No
SD
HIGH
SY88843V
Yes
SD
HIGH
SY88973V
Yes
LOS
LOW
Table 1. Limiting Amplifiers Selection Guide
DESCRIPTION
s Multi-rate up to 3.2Gbps operation
s Wide gain-bandwidth product
• 38dB differential gain
• 2GHz 3dB bandwidth
s Low noise 50
CML data outputs
• 800mVPP output swing
• 60ps edge rates
• 5ps(RMS) typ. random jitter
• 15ps(PP) typ. deterministic jitter
s Chatter-free, Loss-of-Signal (LOS) output
• 4.6dB electrical hysteresis
• OC-TTL output with internal 4.75k
pull-up
resistor
s Programmable LOS sensitivity using single external
resistor
s Integrated input bias reference
s TTL /EN input allows feedback from LOS
s Wide operating range
• Single 3.3V
±10% or 5V ±10% power supply
• –40
°C to +85°C industrial temperature range
s Available in tiny 10-pin EPAD-MSOP and
16-pin MLF™ packages
FEATURES
3.3V/5V 3.2Gbps CML
LOW-POWER LIMITING POST
AMPLIFIER WITH TTL LOS
SY88773V
APPLICATIONS
s 1.25Gbps and 2.5Gbps Gigabit Ethernet
s 1.062Gbps and 2.125Gbps Fibre Channel
s 155Mbps, 622Gbps, 1.25Gbps, and 2.5Gbps SONET/
SDH
s Gigabit interface converter (GBIC)
s Small form factor (SFF) and small form factor
pluggable (SFP) transceivers
s Parallel 10G Ethernet
s High-gain line driver and line receiver
Rev.: C
Amendment: /0
Issue Date:
November 2005
Micro LeadFrame and MLF are trademarks of Amkor Technology
TYPICAL PERFORMANCE
3.3V, 25°C, 10mVpp Input
@3.2Gbps 2
31–1 PRBS, R
LOAD = 50Ω to VCC
TIME (50ps/div.)


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