GS9064-CKD

GS9064 SD SDI Adaptive Cable Equalizer DATA SHEET KEY FEATURES • SMPTE 259 and SMPTE 344 compliant • automatic cable equalization • supports DVB-ASI at 270Mb/s • typical maximum equalized length of Belden 1694A cable at 270Mb/s is 350m • 50Ω differential output (with internal 50Ω pull-ups) • cable length indicator • output mute based on maximum cable length adjust or manual override • Pb-free and Green • single 3.3V power supply operation • operating temperature range: 0°C to +70°C • pin compatible with HDLINX™ II GS1524 multirate SDI adaptive cable equalizer APPLICATIONS • SMPTE 259M Coaxial Cable Serial Digital Interfaces DESCRIPTION The GS9064 is a second-generation high-speed bipolar integrated circuit designed to equalize and restore signals received over 75Ω co-axial cable at data rates from 143Mb/s up to 540Mb/s. The GS9064 is designed to support SMPTE 344M and SMPTE 259M and is optimized for performance at 270Mb/s. The GS9064 features DC restoration to compensate for the DC content of SMPTE pathological test patterns, and incorporates a Cable Length Indicator (CLI) that provides a linear indication of the amount of cable being equalized. A voltage programmable mute threshold (MCLADJ) is included to allow muting of the GS9064 output when a selected cable length is reached. This feature allows the GS9064 to distinguish between low amplitude SDI signals and noise at the input of the device. The CD/MUTE pin provides an indication of the GS9064 mute status in addition to functioning as a mute control input. The output of the GS9064 may be forced to an active or a mute condition by applying a voltage to the CD/MUTE pin. GS9064 MCLADJ CABLE LENGTH INDICATOR/ADJUSTOR CARRIER DETECT MUTE CLI CD/MUTE BYPASS SDI SDI SDO SDO EQUALIZER DC RESTORE OUTPUT AGC GS9064 FUNCTIONAL BLOCK DIAGRAM 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 Document No. 22212 - 2 TABLE OF CONTENTS 1. PIN OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.1 PIN ASSIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 PIN DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 2. ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 GS9064 2.1 ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 DC ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2.3 AC ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.4 INPUT/OUTPUT CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.5 TYPICAL PERFORMANCE CURVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 3. DETAILED DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 4. APPLICATION REFERENCE DESIGN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.1 PCB LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 4.2 TYPICAL APPLICATION CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 5. REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6. PACKAGE & ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 6.1 PACKAGE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6.2 ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7. REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2 of 10 GENNUM CORPORATION 22212 - 2 1. 1.1 PIN OUT PIN ASSIGNMENT CLI VCC VEE SDI SDI VEE AGC+ AGC- 1 2 3 4 5 6 7 8 GS9064 16PIN SOIC TOP VIEW 16 15 14 13 12 11 10 9 CD/MUTE GS9064 VCC VEE SDO SDO V EE MCLADJ BYPASS 1.2 PIN DESCRIPTIONS PIN NUMBER 1 NAME CLI TYPE Output CABLE LENGTH INDICATOR DESCRIPTION An analog voltage proportional to the cable length connected to the serial digital input. NOTE: CLI is recommended for data rates up to 360 Mb/s only. 2, 15 VCC VEE SDI, SDI AGC+, AGCInput Power Input Power Input Passive Input Input Most positive power supply connection. Connect to +3.3V. 3, 6, 11, 14 4, 5 7, 8 Most negative power supply connection. Connect to ground. Serial digital differential inputs. External AGC capacitor. Should be set to 1µF. 9 BYPASS Forces the CORE stage and the DC RESTORE stage into bypass mode when HIGH. No equalization occurs in this mode. MAXIMUM CABLE LENGTH ADJUST Adjusts the approximate maximum amount of cable to be equalized (from 0m to the maximum cable length). The output is muted (latched to the last state) when the maximum cable length is achieved. NOTE: MCLADJ is recommended for data rates up to 360 Mb/s only. 10 MCLADJ Input 12, 13 16 SDO, SDO CD/MUTE Output Input / Output Equalized serial digital differential outputs. MUTE INDICATOR-CONTROL / CARRIER DETECT OUTPUT: the output voltage drops to below 1.2V when the carrier is present and the data outputs are active. INPUT: if the CD/MUTE pin is tied to ground, the data output will never mute and the MCLADJ setting is overwritten. If the CD/MUTE pin is tied to VCC, the data outputs will always mute and the MCLADJ setting is overwritten. 3 of 10 GENNUM CORPORATION 22212 - 2 2. 2.1 ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS VALUE -0.5V to +3.6 VDC 500V -50°C< Ts < 125°C -0.3 to (VCC + 0.3)V 0°C to 70°C 300mW 260°C PARAMETER Supply Voltage Input ESD Voltage Storage Temperature Range Input Voltage Range (any input) Operating Temperature Range Power Dissipation Lead Temperature (soldering, 10 sec.) GS9064 2.2 DC ELECTRICAL CHARACTERISTICS VCC = 3.3V , VEE = 0V , TA = 0°C to 70°C, 270Mb/s, unless otherwise shown PARAMETER Supply Voltage Power Consumption Supply Current Input Common Mode Voltage Output Common Mode Voltage CLI DC Voltage SYMBOL VCC PD ΙS VCMIN VCMOUT CONDITIONS MIN 3.1 TYPICAL 3.3 265 80 1.75 VCC - ∆VSDO/2 2.5 1.9 1.3 0.69 - MAX 3.5 1.2 - UNITS V mW mA V mV V V V V V TEST LEVEL 1 5 1 10 7 1 7 7 7 1 1 NOTES - TA = 25°C TA = 25°C - Cable length = 0m No signal (max cable length) - Floating MCLADJ DC Voltage MCLADJ Range CD/Mute Output Voltage VCD/Mute(OH) VCD/Mute(OL) CD/Mute Input Voltage Required to Force Outputs to Mute CD/Mute Input Voltage Required to Force Outputs to Activate VCD/Mute) 0m to max cable length Carrier not present Carrier present Min to Mute 2.6 3.0 V 7 VCD/Mute Max to Activate - - 2.0 V 7 - TEST LEVELS 1. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges. 2. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges using correlated test. 3. Production test at room temperature and nominal supply voltage. 4. QA sample test. 5. Calculated result based on Level 1, 2, or 3. 6. Not tested. Guaranteed by design simulations. 7. Not tested. Based on characterization of nominal parts. 8. Not tested. Based on existing design/characterization data of similar product. 9. Indirect test. 10. Wafer Probe 4 of 10 GENNUM CORPORATION 22212 - 2 2.3 AC ELECTRICAL CHARACTERISTICS VCC = 3.3V , VEE = 0V , TA = 0°C to 70°C, 270Mb/s, unless otherwise shown PARAMETER Serial Input Data Rate Input Swing SYMBOL DRSDI ∆VSDI CONDITIONS EQ active Differential, TA =25°C Cable length = 0m MIN 143 720 TYPICAL 800 MAX 540 950 UNITS Mb/s mVp-p TEST LEVEL 6 1 NOTES - GS9064 Output Swing Maximum Equalized Cable Length ∆VSDO Differential, 50 ohm load, TA =25°C 270Mb/s, Belden 8281 0.20UI output jitter EQ Pathological 540Mb/s, Belden 8281 0.20UI output jitter EQ Pathological - 750 280 - mVp-p m 1 7 - - 180 - m 7 - Output Rise/Fall Time Mismatch in Rise/Fall Time Duty Cycle Distortion Overshoot Input Return Loss tr, tf 20% - 80% - 80 - 220 30 100 10 - ps ps ps % dB 1 1 7 1 7 - IRL 15 TEST LEVELS 1. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges. 2. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges using correlated test. 3. Production test at room temperature and nominal supply voltage. 4. QA sample test. 5. Calculated result based on Level 1, 2, or 3. 6. Not tested. Guaranteed by design simulations. 7. Not tested. Based on characterization of nominal parts. 8. Not tested. Based on existing design/characterization data of similar product. 9. Indirect test. 10. Wafer Probe 5 of 10 GENNUM CORPORATION 22212 - 2 2.4 INPUT/OUTPUT CIRCUITS All resistors in ohms, all capacitors in farads, unless otherwise shown. 3k SDI RC 3.6k 3k GS9064 50 SDI 3.6k 50 SDO SDO Figure 1 Input Equivalent Circuit Figure 4 Output Circuit VCC VCC 10k 12k + MCLADJ - 10k 150µ CLI + Figure 2 MCLADJ Equivalent Circuit Figure 5 CLI Output Circuit VCC 7.5k OUTPUT STAGE MUTE CONTROL CD/MUTE Bypass Internal Reference Figure 3 CD/MUTE Circuit Figure 6 Bypass Circuit 6 of 10 GENNUM CORPORATION 22212 - 2 2.5 TYPICAL PERFORMANCE CURVES All resistors in ohms, all capacitors in farads, unless otherwise shown. 350 3.5 POWER CONSUMPTION (mW) 300 250 200 150 100 50 0 0 20 40 60 80 2.0 0 50 100 MCLADJ VOLTAGE (V) GS9064 3.0 2.5 150 200 250 300 TEMPERATURE (˚C) CABLE LENGTH (m) Figure 7 Power Consumption Figure 10 MCLADJ Input Voltage vs 1694A Cable Length, 270Mb/s 3.5 1100 CLI VOLTAGE (V) 3 900 700 JITTER (ps) 0 50 100 150 200 250 300 2.5 500 400 300 200 2 1.5 100 0 CABLE LENGTH (m) 0 100 200 300 400 Figure 8 CLI Voltage vs 8281 Cable Length, 270Mb/s CABLE LENGTH (m) Figure 11 Typical Peak-to-Peak Jitter, PRN223-1, 1694A, 270Mb/s Figure 9 Input 8281, 280m, 270Mb/s Figure 12 Output 8281, 280m, 270Mb/s 7 of 10 GENNUM CORPORATION 22212 - 2 3. DETAILED DESCRIPTION 3.3 CABLE LENGTH INDICATION & CARRIER DETECT/MUTE The GS9064 is a high speed bipolar IC designed to equalize SD serial digital signals. The device can typically equalize 350 meters of Belden 1694A cable at 270Mb/s. Powered from a single +3.3V or -3.3V power supply, the device consumes approximately 240mW of power. 3.1 SERIAL DIGITAL INPUT The GS9064 incorporates an analog cable length indicator (CLI) output and a programmable threshold output mute (MCLADJ). In addition, a multi-function CD/MUTE pin allows control of the GS9064 MUTE functionality for SD inputs. GS9064 The SD serial digital input signal may be connected to the input pins (SDI/SDI) in either a differential or single ended configuration. AC coupling of the inputs is recommended, as the SDI and SDI inputs are internally biased at approximately +1.8 volts. 3.2 AUTOMATIC CABLE EQUALIZATION 3.3.1 Cable Length Indicator The input signal passes through a variable gain equalizing stage whose frequency response closely matches the inverse of the cable loss characteristic. In addition, the variation of the frequency response with control voltage imitates the variation of the inverse cable loss characteristic with cable length. The edge energy of the equalized signal is monitored by a detector circuit which produces an error signal corresponding to the difference between the desired edge energy and the actual edge energy. This error signal is integrated by both an internal and an external AGC filter capacitor providing a steady control voltage for the gain stage. As the frequency response of the gain stage is automatically varied by the application of negative feedback, the edge energy of the equalized signal is kept at a constant level which is representative of the original edge energy at the transmitter. The equalized signal is also DC restored, effectively restoring the logic threshold of the equalized signal to its correct level independent of shifts due to AC coupling. The digital output signals have a nominal voltage of 750mVpp differential, or 375mVpp single ended when terminated with 50Ω as shown below in Figure 13. The voltage output of the CLI pin is a representation of the amount of cable present at the inputs of the device. Figure 8 shows the CLI voltage versus cable length (signal strength). At 270Mb/s with no cable length and 800mV input signal levels, the CLI output voltage is approximately 2.5V. As the cable length is increased, the CLI voltage decreases, thereby providing an approximate correlation between the CLI voltage and cable length 3.3.2 Programmable Mute Threshold A voltage programmable mute threshold (MCLADJ) is included to allow muting of the GS9064 output when a selected cable length is reached. This feature allows the device to distinguish between low amplitude SDI signals and noise at its input. Figure 10 shows the relationship between the voltage applied to the MCLADJ pin and the input cable length accepted by the GS9064. For consistent accurate results this may need to be calibrated for each device. The MCLADJ pin may be left unconnected for applications where output muting is not required. This feature has been designed for use in applications such as routers where signal crosstalk and circuit noise cause the equalizer to output erroneous data when no input signal is actually present. The use of a Carrier Detect function with a fixed internal reference does not solve this problem since the signal to noise ratio on the circuit board could be significantly less than the default signal detection level set by the on-chip reference. NOTE: MCLADJ and CLI are only recommended for data rates up to 360 Mb/s. +187.5mV 3.3.3 Carrier Detect/Mute VCM = 2.925V typical SDO -187.5mV SDO 50 50 +187.5mV VCM = 2.925V typical -187.5mV Applying a HIGH INPUT to the CD/Mute pin forces the GS9064 outputs to a muted condition. See the DC Electrical Characteristics table for voltage levels. In this condition the outputs are latched to the last logic level present at the output to avoid signal crosstalk. Applying a LOW INPUT to the CD/Mute pin will force the GS9064 outputs to remain active regardless of input cable length or the voltage applied to the MCLADJ pin. See the DC Electrical Characteristics table for voltage levels. Figure 13 Typical Output Voltage Levels 8 of 10 GENNUM CORPORATION 22212 - 2 When used as an OUTPUT, the CD/Mute pin will provide an indication of the output mute status. The CD/Mute voltage will fall to below 1.2V when the carrier is present and the data outputs are active. NOTE: The CD/Mute pin is not functional in BYPASS mode. 4. 4.1 APPLICATION REFERENCE DESIGN GS9064 PCB LAYOUT An FR-4 dielectric can be used, however, controlled impedance transmission lines are required for PCB traces longer than approximately 1cm. Note the following PCB artwork features used to optimize performance: 1. The PCB ground plane is removed under the GS9064 input AND output components to minimize parasitic capacitance. 2. High speed traces are curved to minimize impedance changes. 4.2 TYPICAL APPLICATION CIRCUIT CLI CD/MUTE VCC VCC 10n BNC 6.4n 1 2 3 4 5 6 7 8 75 37.4 1u + CLI VCC VEE SDI SDI VEE AGC+ AGCGS9064 CD/MUTE VCC VEE SDO SDO VEE MCLADJ BYPASS 16 15 14 13 12 11 10 9 10n + 4u7 SDO + SDO 4u7 1u 75 1u MCLADJ NOTE: All resistors in Ohms, capacitors in Farads, and inductors in Henrys, unless otherwise noted. BYPASS 5. REFERENCES Compliant with SMPTE 259M and SMPTE 344. 9 of 10 GENNUM CORPORATION 22212 - 2 6. 6.1 PACKAGE & ORDERING INFORMATION PACKAGE DIMENSIONS * CONTROLLING DIMENSION: MM 16 9 MILLIMETER Symbol MIN. A E H A1 A2 0.010" 1 b 8 L GAUGE PLANE b c D E e Detail F H L D L1 Y 0˚ A2 A c 5.80 0.40 1.35 0.10 1.30 0.33 0.19 9.80 3.80 9.91 3.90 1.27 6.00 0.64 1.07 0.10 8˚ 0˚ 6.20 1.27 0.228 0.016 NOM. 1.63 0.15 1.40 0.41 MAX. 1.75 0.25 1.50 0.51 0.25 10.01 4.00 MIN. 0.053 0.004 0.051 0.013 0.007 0.386 0.150 0.390 0.154 0.50 0.236 0.025 0.042 0.004 8˚ 0.244 0.050 NOM. 0.064 0.006 0.055 0.016 MAX. 0.069 INCH GS9064 0.010 0.059 0.020 0.010 0.394 0.157 A1 e L1 Y Seating Plane See Detail F 16 PIN SOIC 6.2 ORDERING INFORMATION PART NUMBER GS9064-CKD GS9064-CKDE3 PACKAGE 16 pin SOIC 16 pin SOIC TEMPERATURE RANGE 0°C to 70°C 0°C to 70°C Pb-FREE AND GREEN No Yes 7. REVISION HISTORY VERSION A B C 0 1 2 ECR 120607 125774 126688 127023 128542 133975 DATE July 2002 July 2002 September 2002 December 2002 June 2003 June 2004 New Document Added detailed block descriptions and initial applications information. Change packaging from LGA to SOIC for pin compatibility with the GS1524. Upgrade document to Preliminary Data Sheet and edit AC/DC Characteristics to match current design specification limits. Upgrade document to Data Sheet. Power number corrected. Added lead-free and green information. CHANGES AND/OR MODIFICATIONS DOCUMENT IDENTIFICATION DATA SHEET The product is in production. Gennum reserves the right to make changes at any time to improve reliability, function or design, in order to provide the best product possible. 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. © Copyright July 2002 Gennum Corporation. All rights reserved. Printed in Canada. 10 of 10 22212 - 2