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SY88813V Datasheet(PDF) 1 Page - Micrel Semiconductor

Part No. SY88813V
Description  3.3V/5V 155Mbps PECL LOW POWER LIMITING POST AMPLIFIER WITH PECL SIGNAL DETECT
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
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SY88813V Datasheet(HTML) 1 Page - Micrel Semiconductor

   
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SY88813V
Micrel, Inc.
M9999-072505
hbwhelp@micrel.com or (408) 955-1690
3.3V/5V 155Mbps PECL LOW POWER
LIMITING POST AMPLIFIER WITH PECL
SIGNAL DETECT
SY88813V
Rev.: B
Amendment: /0
Issue Date:
July 2005
TYPICAL APPLICATIONS CIRCUIT
APPLICATIONS
s 155Mbps SONET/SDH
s Small form factor transceivers
s High-gain line driver and line receiver
s Single 3.3V or 5V power supply
s Up to 155Mbps operation
s Low noise PECL data outputs
s Chatter-free PECL Signal Detect (SD) output
s TTL /EN input
s Programmable SD level set (SD
LVL)
s Available in a tiny 10-pin MSOP (3mm) package
FEATURES
DESCRIPTION
The SY88813V 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 SY88813V
quantizes these signals and outputs PECL level waveforms.
The SY88813V operates from a single +3.3V or +5V
power supply, over temperatures ranging from –40
°C to
+85
°C. With its wide bandwidth and high gain, signals with
data rates up to 155Mbps and as small as 5mV
PP can be
amplified to drive devices with PECL inputs.
The SY88813V generates a PECL signal-detect output.
A programmable signal-detect level set pin (SD
LVL) sets
the sensitivity of the input amplitude detection. SD asserts
high if the input amplitude rises above the threshold set by
SD
LVL and deasserts low otherwise. /EN deasserts the true
output signal without removing the input signal. Typically
4.6dB SD hysteresis is provided to prevent chattering.
VCC
/EN
GND
GND
To
CDR
SY88813V
3k
From
Transimpedance
Amp.
DOUT
/DOUT
VREF
VCC
SDLVL
DIN
/DIN
0.1
µF
0.1
µF
0.1
µF
0.1
µF
SD
50
Rpd
50
100
Rpd
Rpd
For 3.3V, Rpd = 120Ω
For 5V, Rpd = 220Ω


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