GS1514CKDE3 - Gennum Corp.

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

SSADJ

SSI

CD/Mute

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

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

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

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.

GS1514

PACKAGE

PACKAGE PACKAGE

PACKAGE DIMENSIONS

DIMENSIONSDIMENSIONS

DIMENSIONS

Dimensions in millimeters

0.49

MAX

4.0

MAX

6.20

MAX

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