GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 E-mail: info@gennum.com
www.gennum.com
Revision Date: February 2002 Document No. 16552 - B
ADVANCE INFORMATION NOTE
GS1514
FEATURES
FEATURESFEATURES
FEATURES
• Automatic gain control
• DC Restorer for immunity to SDI pathological bit
patterns
• Supports SDI data rates from 143Mb/s to 1.485Gb/s
• Signal strength indicator
• Internal 50 ohm output termination resistors
• Minimal external components
• Seamless output interface to other HD-LINX devices
• Single +5V or -5V power supply
APPLICATIONS
APPLICATIONSAPPLICATIONS
APPLICATIONS
• SMPTE 292M Fibre-Optic Serial Digital Interfaces
DESCRIPTION
DESCRIPTIONDESCRIPTION
DESCRIPTION
The GS1514 is an AGC & DC Restorer circuit to be used in
conjunction with an optical receiver. It will automatically
amplify input signals in addition to restoring DC content to
signals which have been AC coupled. This device also
incorporates a signal strength indicator signal which is an
indication of the received input swing (which equates to the
received optical power). When the lower input limit is
reached, the output is muted (latched to the last state) and
the situation is indicated by the MUTE pin. This mute
condition can be overridden and the output can be forced
to either an active or a mute situation.
GS1514 FUNCTIONAL BLOCK DIAGRAM
GS1514 FUNCTIONAL BLOCK DIAGRAMGS1514 FUNCTIONAL BLOCK DIAGRAM
GS1514 FUNCTIONAL BLOCK DIAGRAM
ORDERING INFORMATION
ORDERING INFORMATIONORDERING INFORMATION
ORDERING INFORMATION
PART
NUMBER PACKAGE TEMPERATURE
GS1514-CKD 16 pin narrow SOIC 0°C to 70°C
GS1514-CTD 16 pin Tape and Reel 0°C to 70°C
AGC DC
RESTORE OUTPUT
SIGNAL STRENGTH INDICATOR /
CARRIER DETECT / MUTE
SDI
SDI
SSADJ
SSI
CD/Mute
SDO
SDO
™ GS1514
GS1514 GS1514
GS1514
Serial Digital DC Restorer
Serial Digital DC RestorerSerial Digital DC Restorer
Serial Digital DC Restorer
for Fibre-Optic Receivers
for Fibre-Optic Receiversfor Fibre-Optic Receivers
for Fibre-Optic Receivers
GENNUM CORPORATION 16552 - B
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GS1514
ABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGSABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGS
PARAMETER VALUE
Supply Voltage 0.5VDC to +5.5 VDC
Input ESD Voltage TBD
Storage Tempature Range -50°C< Ts < 125°C
Lead Tempature (soldering 10
seconds)
260°C
DC ELECTRICAL CHARACTERISTICS
DC ELECTRICAL CHARACTERISTICS DC ELECTRICAL CHARACTERISTICS
DC ELECTRICAL CHARACTERISTICS
VDD = 5V, TA = 0°C to 70°C, unless otherwise shown
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES
Positive Supply Voltage - +4.75 +5.00 +5.25 V
Power Consumption - - 260 - mW
Supply Current - - 52 - mA
Input DC Voltage - - 2.7 - V
Output CM Voltage - - 4 - V
SSI DC Voltage Max Input Swing - 3.5 - V
Min Input Swing - 1.5 - V
Mute DC Voltage Below Min Input Swing - 1.8 - V
AC ELECTRICAL CHARACTERISTICS
AC ELECTRICAL CHARACTERISTICSAC ELECTRICAL CHARACTERISTICS
AC ELECTRICAL CHARACTERISTICS
VDD = 5V, TA = 0°C to 70°C, unless otherwise shown
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES
Jitter 1.5Gb/s, 800mV input, Pathological & PRN 150 - ps p-p
1.5Gb/s, 20mV input, Pathological & PRN 250 - ps p-p
Data Rate - 143 - 1485 Mb/s
Output Rise/Fall Time - - - 270 ps 20% to 80%
Input Resistance - - 2.8 - kΩSingle-ended
Output Resistance - - 50 - ΩSingle-ended
Output Signal Swing 50Ω Loads - 0.4 - V p-p (same as
GS1504)
SSI Range - - 2 - V Ranges ~ 3.5V
to 1.5V, max. to
min. input swing
Force Output Mute Applied to Mute - 4.2 - V Min. to Mute
GENNUM CORPORATION 16552 - B
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GS1514
PIN DESCRIPTIONS
PIN DESCRIPTIONSPIN DESCRIPTIONS
PIN DESCRIPTIONS
PIN NAME LEVEL I/O DESCRIPTION
1 SSI Analog Output Signal Strength Indicator. Provides a linear voltage representation of the
received signal swing.
2,15 Vcc Input Most positive supply voltage
3, 6,11,14 Vee Input Most negative supply voltage.
4,5 SDI,SDI Analog Input Serial Data Input. Differential input pins. Output of optical receive module
should be AC coupled to these pins.
7 SSADJ Analog Input Signal Strength Adjust. Adjusts the minimum input signal strength which be
restored. To set no minimum limit, this pin should be left open.
8, 9,10 NC No Connect. Do not connect these pins to supply or ground
12,13 SDO, SDO PECL Output Serial Data Output. Differential serial output pins with 50Ω output impedance.
16 CD/Mute Output/Input Carrier Detect/Mute indicator/control. When the CD/Mute output is low, the
carrier is present and the data output is active. When the CD/Mute output is
high, the carrier is not present and the data output is muted (latched to the last
state). This indicates that the minimum input signal as set by SSADJ has been
reached.
The above default CD/Mute function can be overwitten as follows: if the CD/
Mute pin is tied to ground, the data output will not mute and the SSADJ setting
is overwritten. If the mute pin is tied high, the data output will always mute and
the SSADJ setting is overwritten
16552 - B
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GENNUM CORPORATION
MAILING ADDRESS:
P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946
SHIPPING ADDRESS:
970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5
GENNUM JAPAN CORPORATION
C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku
Tokyo 168-0081, Japan
Tel. +81 (03) 3334-7700 Fax. +81 (03) 3247-8839
GENNUM UK LIMITED
25 Long Garden Walk, Farnham, Surrey, England GU9 7HX
Tel. +44 (0)1252 747 000 Fax +44 (0)1252 726 523
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
© Copyright Febuary 2001 Gennum Corporation. All rights reserved. Printed in Canada.
GS1514
PACKAGE
PACKAGE PACKAGE
PACKAGE DIMENSIONS
DIMENSIONSDIMENSIONS
DIMENSIONS
Dimensions in millimeters
0.49
MAX
4.0
MAX
6.20
MAX
17
8
14
7.62 ±0.05
6 spaces@ 1.27±0.05
0.25
MAX
1.91
MAX 1.27
MAX
0.25
MAX
8.75 MAX
O.56 MAX ==
=
==
=
16 Pin SOIC Narrow
REVISION NOTES:
Update to AC and DC tables.
Watermark Removed
DOCUMENT IDENTIFICATION
ADVANCE INFORMATION NOTE
The product is in a development phase and specifications are subject to
change without notice. Gennum reserves the right to remove the product
at any time. Listing the product does not constitute an offer for sale.
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION