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GENLINX TM GS9008A Cable Driver with Two Adjustable Outputs
DATA SHEET KEY FEATURES * two output pairs, adjustable from 0 to 1100mVp-p into 75 loads * nominal 600 ps rise and fall times * accepts SMPTE and standard ECL input levels * operates from a single +5 or -5 volt supply * on-chip DC restoration for low jitter * 170mW power dissipation * interfaces with GENLINXTM GS9002, GS9004A, GS9005A and GS9015A * Pb-free and Green APPLICATIONS * * * SMPTE 259M Serial Digital Systems (4:2:2 & 4sc) Other Serial Digital Video Interfaces -- 360Mb/s General purpose high speed driver applications DESCRIPTION The GENLINXTM GS9008A is a bipolar integrated circuit designed to drive two 75 co-axial cables at data rates exceeding 400Mb/s. It directly interfaces with other GENLINXTM devices and can also be used as a general purpose high speed cable driver. While there are no plans to discontinue the GS9008A, Gennum has developed a successor product with improved features and performance called the GS9028. The GS9028 is recommended for new designs.
GS9008A
NOT RECOMMENDED FOR NEW DESIGNS
The differential inputs are AC-coupled and internally DCrestored which allows correct passage of pathological check codes associated with the serial digital standards. Even though the inputs are AC coupled, static protection diodes at each input restrict the DC differential so that if the driving source uses the opposite polarity power supply, external DC blocking capacitors must be used. Correctly terminated output signal levels are adjustable from as low as 0mV to as high as 1100mV with little change in other performance parameters. Performance is guaranteed for output levels between 600mV and 1000mV. The gain of the output stages is varied by adjusting the VSET voltage with respect to an internal band gap reference voltage VREF. The GS9008A is packaged in an 8 pin SOIC, and operates from a single +5 or -5 volt supply consuming typically only 170mW of power.
PIN CONNECTIONS
OUTPUT 1
1 2
8 7
VCC INPUT INPUT VEE
OUTPUT 1
VSET VREF
GS9008A
3 4 6 5
ORDERING INFORMATION
PART NUMBER GS9008ACKA GS9008ACKAE3 PACKAGE TYPE 8 Pin SOIC 8 Pin SOIC TEMPERATURE RANGE 0 to 70C 0 to 70C Pb-FREE AND GREEN No Yes
FUNCTIONAL BLOCK DIAGRAM
GS9008A
VSET GAIN CONTROL VCC (GND)
INPUT INPUT
INPUT BUFFER & DC RESTORE
OUTPUT DRIVER
OUTPUT 1 OUTPUT 1
VREF
BAND-GAP REFERENCE GND (VEE)
Revision Date: June 2004 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
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ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage (VS) Input Voltage Range (any input) Power Dissipation Operating Temperature Range Storage Temperature Range Lead Temperature (soldering, 10 sec) VALUE 5.5V VS -0.5V 300mW
GS9008A
0C TA 70C -65C TS 150C 260C
GS9008A CABLE DRIVER -- DC ELECTRICAL CHARACTERISTICS Conditions: VS = 5V, TA = 0C to 70C, RL= 150 to GND and 144 AC coupled unless otherwise shown
PARAMETER Supply Voltage Power Consumption Supply Current Supply Current Reference Voltage SYMBOL VS PD S1 S2 VREF 4 x150 Loads DC 1% Accuracy, TA= 25C VSET = (0.667) VREF DC No Loads, TA= 25C 10 k to ground CONDITIONS MIN 4.5 TYP 5.0 170 62 16 1.2 MAX 5.5 190 67 20 UNITS volts mW mA mA volts NOTES
NOT RECOMMENDED FOR NEW DESIGNS
GS9008A CABLE DRIVER -- AC ELECTRICAL CHARACTERISTICS Conditions: VS = 5V, TA = 0C to 70C, RL= 150 to GND and 144 AC coupled unless otherwise shown
PARAMETER Input Signal Amplitude Input Signal Rise/Fall Times Output Amplitudes across 75 Load (See Note 1) SYMBOL VIN tR,tF VOUT VSET = (0.5) VREF VSET = (0.667) VREF VSET = (0.833) VREF Output Amplitude Temperature Coefficient (See Note 2) TC VSET = (0.5) VREF VSET = (0.667) VREF VSET = (0.833) VREF Output Rise/Fall Times (20% to 80%) tR,tF VSET = (0.5) VREF VSET = (0.667) VREF VSET = (0.833) VREF Output Overshoot Jitter Propagation Delay tJ tP tR= tF = 600 ps at 270Mb/s CONDITIONS MIN 700 540 720 900 400 400 400 TYP 800 600 800 1000 25 -12 -45 630 575 530 0 1 MAX 1000 750 660 880 1100 100 80 80 800 800 800 25 UNITS mVp-p ps mVp-p mVp-p mVp-p ppm/C ppm/C ppm/C ps ps ps % ps ns See Figure 3 Note 1 & 2 Note 1 & 2 Note 1 & 2 NOTES
1. VOUT is measured across a correctly terminated load, back matched to the device. The peak to peak voltage of the device itself is 2 x VOUT. 2. VOUT is proportional to VSET and VSET may be an external low impedance, high stability supply. In this case the amplitude temperature coefficient will not be guaranteed.
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INPUT/OUTPUT CIRCUITS
VCC VCC
VCC 400 400
VCC
GS9008A
SERIAL INPUTS
VREF1 0.5p 400 VREF1 + VREF2
VOUT
VCC
NOT RECOMMENDED FOR NEW DESIGNS
Figure 1
Input Circuit (Pins 6 and 7)
VOUT
Figure 2 Output Circuit (Pins 1 and 2)
+5V OUTPUT LEVEL ADJUST 10k
0.1
1.8p 5 INPUT SIGNAL INPUT SIGNAL 6 7 8 + 10 0.1 150 4 3
1.0
68
OUTPUT -1 (75)
GS9008A
2 1.0 1 1.8p 150 68 OUTPUT -1 (75)
All resistors in ohms, all capacitors in microfarads unless otherwise stated.
Figure 3
Typical Application Circuit
-5V
+5V
7
ECL DRIVER
0.1F 6 0.1F
GS9008A
-2V
All resistors in ohms, all capacitors in microfarads unless otherwise stated.
Figure 4 Split Supply Interfacing
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REVISION HISTORY
VERSION 0 1 ECR 132427 134030 DATE October 2003 June 2004 New Document Added lead-free and green information. CHANGES AND/OR MODIFICATIONS
GS9008A
NOT RECOMMENDED FOR NEW DESIGNS
DOCUMENT IDENTIFICATION
PRELIMINARY DATA SHEET The product is in a preproduction phase and specifications are subject to change without notice.
CAUTION
ELECTROSTATIC SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION
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 Shinjuku Green Tower Building 27F, 6-14-1, Nishi Shinjuku, Shinjuku-ku, Tokyo, 160-0023 Japan Tel. +81 (03) 3349-5501, Fax. +81 (03) 3349-5505 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. (c) Copyright October 2003 Gennum Corporation. All rights reserved. Printed in Canada.
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