sy88803v Micrel Semiconductor, sy88803v Datasheet

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sy88803v

Manufacturer Part Number
sy88803v
Description
Sy88803v 3.3v/5v 155mbps Pecl Low Power Limiting Post Amplifier W/ttl Los
Manufacturer
Micrel Semiconductor
Datasheet

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Micrel, Inc
M9999-051706
hbwhelp@micrel.com or (408) 955-1690
FEATURES
APPLICATIONS
TYPICAL APPLICATIONS CIRCUIT
Single 3.3V or 5V power supply
Up to 155Mbps operation
Low noise PECL data outputs
Chatter-free TTL Loss-of-Signal (LOS) output
TTL /EN input
Programmable LOS level set (LOS
Available in a tiny 10-pin MSOP (3mm) package
155Mbps SONET/SDH
Small form factor transceivers
High-gain line driver and line receiver
From
Transimpedance
Amp.
50
LVL
)
3.3V/5V 155Mbps PECL LOW POWER
LIMITING POST AMPLIFIER W/TTL LOS
50
/D
D
IN
IN
2.5k
LOS
GND
V
CC
SY88803V
V
/EN
CC
1
100
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 SY88803V
quantizes these signals and outputs PECL level waveforms.
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 5mVp-p can be
amplified to drive devices with PECL inputs.
programmable loss-of-signal level set pin (LOS
sensitivity of the input amplitude detection. LOS asserts
high if the input amplitude falls below the threshold set by
LOS
true output signal without removing the input signal. Typically
4.6dB loss-of-signal hysteresis is provided to prevent
chattering.
LOS
V
DESCRIPTION
The SY88803V low power limiting post amplifier is
The SY88803V operates from a single +3.3V or +5V
The SY88803V generates a TTL LOS output. A
CC
LVL
LVL
3k
V
and deasserts low otherwise. /EN deasserts the
REF
For 3.3V, R
For 5V, R
/D
D
OUT
OUT
R
pd
pd
GND
pd
= 220
= 120
R
pd
To
CDR
Rev.: D
Issue Date: May 2006
SY88803V
LVL
Amendment: /0
SY88803V
) sets the

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sy88803v Summary of contents

Page 1

... The SY88803V quantizes these signals and outputs PECL level waveforms. ) The SY88803V operates from a single +3.3V or +5V LVL power supply, over temperatures ranging from – +85 C. With its wide bandwidth and high gain, signals with data rates up to 155Mbps and as small as 5mVp-p can be amplified to drive devices with PECL inputs ...

Page 2

... True data output. Power Supply Positive power supply. 2 Operating Package Range Marking Commercial SY88803V Commercial SY88803V Industrial SY88803V with Pb-free bar-line indicator Industrial SY88803V with Pb-free bar-line indicator = electricals only. A and V CC REF . Requires external pullup resistor of 2.5k . LVL SY88803V Lead ...

Page 3

... 0. +2mA 5. –2V output load –2V output load CC Note 5 Note 6 3 SY88803V (2) ) .............................. +3.0V to +3. Note 3 ............ – + Note 3 .......... – +120 3.3V Min Typ Max REF CC 2.0 0.8 20 100 – ...

Page 4

... V LVL M9999-051706 hbwhelp@micrel.com or (408) 955-1690 ( –2V – +85 C; typical values Condition electrical signal V 18mVp 5mVp-p ID LVL = ( SY88803V = 3.3V Min Typ Max 2 4.6 8 0.1 0.5 0.2 0.5 1000 5 1800 1500 400 200 LOS Assert and Deassert Levels vs ...

Page 5

... Applications requiring the SY88803V to operate with high- gain should have the upstream TIA placed as close as possible to the SY88803V’s input pins to ensure the best performance of the device. Output Buffer The SY88803V’s PECL output buffer is designed to drive 50 lines ...

Page 6

... CC 2.5k 6 2.5mV (Min.) V (mVp-p) IS 900mV (Max.) 5mVp-p (Min.) V (mVp-p) ID 1800mVp-p (Max ESD STRUCTURE GND Figure 3. Output Structure LOS LVL R2 V REF Figure 5. LOS Setting Circuit LVL R2 Notes. LOS V – 1.32V LVL SY88803V D OUT /D OUT 1.32V ...

Page 7

... PECL Amplifer Buffer /D IN REF V CC Level Detect LVL The SY88803V’s ground pin should be connected to the circuit board ground. Use multiple PCB vias close to the part to connect to ground. Avoid long, inductive runs which can degrade performance OUT /D OUT Enable /EN ...

Page 8

... Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify M9999-051706 hbwhelp@micrel.com or (408) 955-1690 + 1 (408) 474-1000 FAX WEB Micrel for any damages resulting from such use or sale. © 2006 Micrel, Incorporated. 8 Rev. 00 http://www.micrel.com SY88803V ...

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