TM GS1514 Serial Digital DC Restorer for Fibre-Optic Receivers ADVANCE INFORMATION NOTE DESCRIPTION * Automatic gain control 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. * 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 * SMPTE 292M Fibre-Optic Serial Digital Interfaces ORDERING INFORMATION PACKAGE TEMPERATURE GS1514-CKD 16 pin narrow SOIC 0C to 70C GS1514-CTD 16 pin Tape and Reel 0C to 70C SIGNAL STRENGTH INDICATOR / CARRIER DETECT / MUTE SSADJ SDI AGC SDI PART NUMBER DC RESTORE SSI CD/Mute SDO OUTPUT SDO GS1514 FUNCTIONAL BLOCK DIAGRAM Revision Date: February 2002 Document No. 16552 - B 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 GS1514 FEATURES ABSOLUTE MAXIMUM RATINGS PARAMETER VALUE Supply Voltage 0.5VDC to +5.5 VDC Input ESD Voltage TBD -50C< Ts < 125C Lead Tempature (soldering 10 seconds) GS1514 Storage Tempature Range 260C DC ELECTRICAL CHARACTERISTICS VDD = 5V, TA = 0C to 70C, unless otherwise shown PARAMETER CONDITIONS MIN TYP MAX UNITS 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 Max Input Swing - 3.5 - V Min Input Swing - 1.5 - V Below Min Input Swing - 1.8 - V SSI DC Voltage Mute DC Voltage NOTES AC ELECTRICAL CHARACTERISTICS VDD = 5V, TA = 0C to 70C, unless otherwise shown PARAMETER Jitter CONDITIONS MIN TYP MAX UNITS NOTES 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 - k Single-ended Output Resistance - - 50 - Single-ended - 0.4 - V p-p (same as GS1504) - 2 - V Ranges ~ 3.5V to 1.5V, max. to min. input swing - 4.2 - V Min. to Mute Output Signal Swing 50 Loads SSI Range Force Output Mute - Applied to Mute 2 GENNUM CORPORATION 16552 - B PIN DESCRIPTIONS PIN NAME 1 SSI 2,15 LEVEL Analog I/O DESCRIPTION Signal Strength Indicator. Provides a linear voltage representation of the received signal swing. 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 12,13 SDO, SDO 16 CD/Mute No Connect. Do not connect these pins to supply or ground PECL Output Serial Data Output. Differential serial output pins with 50 output impedance. 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 3 GENNUM CORPORATION 16552 - B GS1514 Output PACKAGE DIMENSIONS Dimensions in millimeters 8.75 MAX 1.91 0.49 MAX GS1514 MAX 1.27 MAX 8 14 0.25 4.0 6.20 MAX MAX MAX 7 1 0.25 MAX O.56 MAX = = = = = = 7.62 0.05 6 spaces@ 1.270.05 16 Pin SOIC Narrow CAUTION ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION DOCUMENT IDENTIFICATION REVISION NOTES: Update to AC and DC tables. Watermark Removed 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. GENNUM CORPORATION 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 MAILING ADDRESS: P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 GENNUM UK LIMITED 25 Long Garden Walk, Farnham, Surrey, England GU9 7HX Tel. +44 (0)1252 747 000 Fax +44 (0)1252 726 523 SHIPPING ADDRESS: 970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5 Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. (c) Copyright Febuary 2001 Gennum Corporation. All rights reserved. Printed in Canada. 4 16552 - B