GS7025-CTM

PRO-LINX ™ GS7025 Serial Digital Receiver PRELIMINARY DATA SHEET FEATURES • SMPTE 259M-C compliant (270Mb/s) • automatic cable equalization (typically greater than 350m of high quality cable) • serial data outputs muted and serial clock remains active when input data is lost • operation independent of SAV/EAV sync signals • signal strength indicator output • carrier detect with programmable threshold level • power savings mode (output serial clock disable) • large IJT, typically 0.56UI beyond loop bandwidth • robust lock detect APPLICATIONS Cable equalization plus clock and data recovery for all high speed serial digital interface applications involving SMPTE 259M-C. DESCRIPTION The GS7025 provides automatic cable equalization and high performance clock and data recovery for serial digital signals. The GS7025 receives either single-ended or differential serial digital data and outputs differential clock and retimed data signals at PECL levels (800mV). The onboard cable equalizer provides up to 35dB of gain at 135MHz which typically results in equalization of greater than 350m of high quality cable at 270Mb/s. The GS7025 requires only one external resistor to set the VCO centre frequency and provides adjustment free operation. The GS7025 has dedicated pins to indicate signal strength, carrier detect, and LOCK. Optional external resistors allow the carrier detect threshold level to be customized to the user's requirement. In addition, the GS7025 provides an 'Output Eye Monitor Test' (OEM_TEST) for diagnostic testing of signal integrity after equalization, prior to reslicing. The serial clock outputs can also be disabled to reduce power. The GS7025 operates from a single +5 or -5 volt supply. ORDERING INFORMATION PART NUMBER GS7025-CQM GS7025-CTM PACKAGE 44 pin MQFP Tray 44 pin MQFP Tape TEMPERATURE 0°C to 70°C 0°C to 70°C GS7025 A/D DDI DDI ANALOG DIGITAL MUX CARRIER DETECT PHASELOCK HARMONIC COSC LOCK LOGIC MUTE SDO SDI SDI + - VARIABLE GAIN EQ STAGE FREQUENCY ACQUISITION PHASE DETECTOR SDO CLK_EN SCO SCO OEM_TEST EYE MONITOR AUTO EQ CONTROL CHARGE PUMP LF+ LFS LF- + AGC CAP CD_ADJ SSI/CD VCO CBG RVCO BLOCK DIAGRAM Revision Date: November 2000 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. 522 - 80 - 00 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage (VS) Input Voltage Range (any input) Operating Temperature Range Storage Temperature Range Lead Temperature (soldering, 10 sec) VALUE 5.5V VCC + 0.5 to VEE - 0.5V 0°C ≤ TA ≤ 70°C GS7025 -65°C ≤ TS ≤ 150°C 260°C DC ELECTRICAL CHARACTERISTICS VCC = 5.0V, TA = 25°C unless otherwise stated, RLF = 1.8k, CLF1 = 15nF, CLF2 = 3.3pF PARAMETER Supply Voltage Supply Current CONDITION MIN 4.75 TYPICAL 5 115 125 2.5 1 MAX 5.25 UNITS V mA NOTES TEST LEVEL 1 1 CLK_EN = 0 CLK_EN = 1 VEE+(VDIFF/2) 200 SDI Common Mode Voltage DDI Common Mode Input Voltage Range DDI Differential Input Drive SSI/CD Output Current Source, CLMAX = 50pF, RL = open cct. Source, CLMAX = 50pF, RL=5K Sink AGC Common Mode Voltage OEM_TEST Bias Potential A/D High Low 270, CLK_EN, IN _ENABLE Input Voltage CLK_EN Input Voltage High Low High Low VCC-(VDIFF/2) 2000 18 V V 2 1 1 0.4 to 4.6 800 - mV µA 1 3 - - - 110 µA 3 2.0 2.0 2.5 - 1.0 2.7 4.5 - 1.5 0.8 0.8 0.8 mA V V V 5 3 1 1 1 V 1 V 1 2 GENNUM CORPORATION 522 - 80 - 00 DC ELECTRICAL CHARACTERISTICS (continued) VCC = 5.0V, TA = 25°C unless otherwise stated, RLF = 1.8k, CLF1 = 15nF, CLF2 = 3.3pF PARAMETER LOCK Output Sink Current CLK_EN Source Current CONDITION MIN 500 TYPICAL 26 1 MAX 55 UNITS µA µA NOTES 3 TEST LEVEL 1 1 Low - NOTES 1. TYPICAL - measured on characterization board. 2. VDIFF is the differential input signal swing. 3. LOCK is an open collector output and requires an external pullup resistor. 4. If OEM_TEST is permanently enabled, operating temperature range is limited from 0°C to 60°C inclusive. 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. GS7025 AC ELECTRICAL CHARACTERISTICS VCC = 5.0V, VEE = 0V, TA = 25°C unless otherwise stated, RLF = 1.8k, CLF1 = 15nF, CLF2 = 3.3pF PARAMETER Serial Data Rate Maximum Equalizer Gain (see Figure 3) Additive Jitter [Pseudorandom (2 Intrinsic Jitter [Pseudorandom (2 Intrinsic Jitter [Pathological (SDI checkfield)] Input Jitter Tolerance Lock Time Synchronous Switch 23 23 CONDITIONS SDI @ 135MHz MIN - TYPICAL 1 MAX - UNITS Mb/s dB NOTES TEST LEVEL 1 7 270 (only) 35 -1)] 270Mb/s, 300m (Belden 8281) 270Mb/s - 300 - ps p-p 2, 7 3 - 185 - ps p-p 2, 6 4 -1)] 270Mb/s 462 ps p-p 2, 6 1 270Mb/s tswitch < 0.5µs, 270Mb/s 0.5µs< tswitch 10 ms 0.40 0.5 -200 0.56 1 1 4 1 0 800 300 10 1.0 20 2 200 1000 400 - UI p-p µs ms ms µs ps mV p-p ps kΩ pF dB 3, 6 4 1 7 Carrier Loss Time SDO to SCO Synchronization SDO, SCO Output Signal Swing SDO, SCO Rise & Fall times SDI/SDI Input Resistance SDI/SDI Input Capacitance SDI/SDI Input Return Loss at 270MHz 75Ω DC load 20%-80% 5 7 7 1 7 600 200 15 7 7 7 6 6 6 3 GENNUM CORPORATION 522 - 80 - 00 AC ELECTRICAL CHARACTERISTICS VCC = 5.0V, VEE = 0V, TA = 25°C unless otherwise stated, RLF = 1.8k, CLF1 = 15nF, CLF2 = 3.3pF PARAMETER Carrier Detect Response Time CONDITIONS Carrier Applied, CL