sy88843v Micrel Semiconductor, sy88843v Datasheet

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sy88843v

Manufacturer Part Number
sy88843v
Description
Sy88843v 3.3v/5v 3.2gbps Cml Low-power Limiting Post Amplifier W/ttl Sd
Manufacturer
Micrel Semiconductor
Datasheet

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Micrel, Inc.
Micro LeadFrame and MLF are trademarks of Amkor Technology
M9999-110905
hbwhelp@micrel.com or (408) 955-1690
FEATURES
APPLICATIONS
Low noise 50 CML data outputs
Multi-rate up to 3.2Gbps operation
Wide gain-bandwidth product
• 38dB differential gain
• 2GHz 3dB bandwidth
• 800mV
• 60ps edge rates
• 5ps
• 15ps
Chatter-free, Signal-Detect (SD) output
• 4.6dB electrical hysteresis
• OC-TTL output with internal 4.75k pull-up
Programmable SD sensitivity using single external
resistor
Internal 50 data input termination
TTL EN input allows feedback from SD
Wide operating range
• Single 3.3V 10% or 5V 10% power supply
• –40 C to +85 C industrial temperature range
Available in tiny 10-pin EPAD-MSOP and
16-pin MLF™ packages
1.25Gbps and 2.5Gbps Gigabit Ethernet
1.062Gbps and 2.125Gbps Fibre Channel
155Mbps, 622Mbps, 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
resistor
RMS
PP
PP
typ. deterministic jitter
typ. random jitter
output swing
3.3V/5V 3.2Gbps CML LOW-POWER
LIMITING POST AMPLIFIER w/TTL SD
1
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 SY88843V
quantizes these signals and outputs typically 800mV
voltage-limited waveforms.
+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
10mVp-p can be amplified to drive devices with CML inputs
or AC-coupled PECL inputs.
collector TTL output with internal 4.75k
programmable, loss-of-signal level set pin (SDLVL) sets the
sensitivity of the input amplitude detection. SD asserts high
if the input amplitude rises above the threshold set by SDLVL
and de-asserts low otherwise. SD can be fed back to the
enable (EN) input to maintain output stability under a loss
of signal condition. EN asserts the true output signal without
removing the input signal. Typically 4.6dB SD hysteresis is
provided to prevent chattering.
complete selection of optical module ICs. The following table
summarizes the differences between devices in Micrel’s
latest family of Limiting Amplifiers.
site at www.micrel.com.
Part Number Input Termination
SY88773V
SY88823V
SY88843V
SY88973V
DESCRIPTION
TYPICAL PERFORMANCE
The SY88843V low-power limiting post amplifier is
The SY88843V operates from a single +3.3V 10% or
The SY88843V incorporates a signal detect (SD), open-
Please see Micrel’s website at www.micrel.com for a
All support documentation can be found on Micrel’s web
Table 1. Limiting Amplifiers Selection Guide
@3.2Gbps 2
Integrated 50
No
No
Yes
Yes
3.3V, 25°C, 10mV
31
TIME (50ps/div.)
–1 PRBS, R
LOS
or SD
LOS
SD
SD
LOS
LOAD
pp
Input
= 50 to V
Rev.: C
Issue Date: November 2005
pull-up resistor. A
Active LOW
or HIGH Enable
LOW
HIGH
HIGH
LOW
SY88843V
Amendment: /0
SY88843V
CC
PP

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sy88843v Summary of contents

Page 1

... 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 SY88843V quantizes these signals and outputs typically 800mV voltage-limited waveforms. The SY88843V operates from a single +3.3V 10% or +5V 10% power supply, over an industrial temperature range of – ...

Page 2

... Micrel, Inc. FUNCTIONAL BLOCK DIAGRAM 50 /DIN REF SDLVL M9999-110905 hbwhelp@micrel.com or (408) 955-1690 VCC DIN CML Limiting Buffer Amplifer TTL Buffer REF Generator Level Detect 2.8k OC-TTL Buffer GND 2 DOUT /DOUT VCC 25k EN VCC 4.75k SD SY88843V ...

Page 3

... K10-2 SY88843VMI MLF-16 (2) SY88843VMITR MLF-16 (3) SY88843VEY K10-2 (2, 3) SY88843VEYTR K10-2 (3) SY88843VMG MLF-16 (2, 3) SY88843VMGTR MLF-16 Notes: 1. Contact factory for die availability. Dice are guaranteed Tape and Reel. 3. Pb-Free package is recommended for new designs. Type Pin Function EN TTL Input: Enable: De-asserts true data output when low. ...

Page 4

... CC V REF V –0.020 V –0.005 –0.475 V –0.400 –0.510 V –0.400 Min Typ 2.4 2.0 –0.3 SY88843V 38 C/W 22 C/W Max Units –0.350 V CC –0.350 ...

Page 5

... V = 3.3V Min Typ 700 800 700 800 2 4.6 0.1 0 for a particular SD de-assert, SDLVL SDLVL SY88843V Max Units dB 120 RMS 1800 mV PP 950 mV PP 1020 0 GHz 10mV ...

Page 6

... TIME (50ps/div.) Single-Ended Small-Signal Gain vs. Frequency 100 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 FREQUENCY (GHz) Differential Output Voltage Swing vs. Differential Input Voltage Swing 900 800 700 600 500 400 300 200 100 ( SY88843V ...

Page 7

... Applications requiring the PP SY88843V to operate with high gain should have the upstream TIA placed as close as possible to the SY88843V’s input pins to ensure the device's best performance of the device. Output Buffer The SY88843V’s CML output buffer is designed to drive 50 lines ...

Page 8

... Figure 4. Power Supply Current Measurement M9999-110905 hbwhelp@micrel.com or (408) 955-1690 Figure 1. V and V Definition IS ID VCC 16mA GND GND Figure 3. Output Structure 16mA Figure 5. SD Output Structure Figure SY88843V 5mV (Min.) V (mV) IS 900mV (Max.) 10mV (Min ( 1800mV (Max.) pp VCC 50 0 ...

Page 9

... Limiting Post Amplifier w/ TTL LOS Application Notes Notes on Sensitivity and Hysteresis in Micrel Post Amplifiers M9999-110905 hbwhelp@micrel.com or (408) 955-1690 DIN DOUT SY88843V /DIN /DOUT SDLVL REF GND V 0 100k Data Sheet Link http://www.micrel.com/_PDF/HBW/sy88773v.pdf http://www.micrel.com/_PDF/HBW/sy88823v.pdf http://www.micrel.com/_PDF/HBW/sy88843v.pdf http://www.micrel.com/_PDF/HBW/sy88973v.pdf http://www.micrel.com/product-info/app_hints+notes.shtml 9 SY88843V To CDR ...

Page 10

... Micrel, Inc. 10 LEAD EPAD-MSOP (K10-2) +0.10 -0.10 +0.004 -0.004 M9999-110905 hbwhelp@micrel.com or (408) 955-1690 +0.08 -0.08 +0.003 -0.003 +0.05 -0.05 +0.002 -0.002 +0.15 -0.15 +0.004 -0.004 +0.008 +0.07 -0.008 -0.08 +0.003 +0.003 -0.003 -0.003 +0.15 -0.15 +0.006 -0.006 10 SY88843V Rev.01 ...

Page 11

... PCB Thermal Consideration for 16-Pin MLF™ Package (Always solder, or equivalent, the exposed pad to the PCB (408) 474-1000 FAX Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. 11 Package EP- Exposed Pad Die http://www.micrel.com WEB SY88843V ...

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