gs2988 Gennum Corporation, gs2988 Datasheet
gs2988
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gs2988 Summary of contents
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... An output signal presence function, the OSP pin, indicates whether an active signal is present at the output of the GS2988. The GS2988 can be powered from either a 3. 2.5V supply. Power consumption is typically 110mW using a 2.5V power supply. The GS2988 is Pb-free, and the encapsulation compound does not contain halogenated flame retardant ...
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... DDI DDI Revision History Version ECR 1 153602 0 153455 B 152690 A 151623 GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 EQ_EN SD/HD Slew Rate Equalizer Control Band Gap Reference & Output Control RSET Functional Block Diagram PCN Date – February 2010 – ...
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... Output Return Loss Measurement ........................................................................................... 13 5. Application Information .......................................................................................................................... 14 5.1 PCB Layout ....................................................................................................................................... 14 5.2 Typical Application Circuit ........................................................................................................ 14 6. Package & Ordering Information .......................................................................................................... 15 6.1 Package Dimensions ..................................................................................................................... 15 6.2 Recommended PCB Footprint ................................................................................................... 16 6.3 Packaging Data ............................................................................................................................... 16 6.4 Solder Reflow Profiles .................................................................................................................. 17 6.5 Marking Diagram ........................................................................................................................... 17 6.6 Ordering Information ................................................................................................................... 18 GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 ...
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... Type 1, 2 DDI, DDI Input 3 VEE Power 4 RSET Input − 13, 15 N/C 6 DISABLE Input 9 VCC Power GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 14 13 SDO 12 SDO 11 SD/HD 10 VCC Description Serial data differential input. ...
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... OSP Output 16 EQ_EN Input – Center Pad Power GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 Description Control signal input. When set HIGH, the serial data output will meet the SMPTE 259M rise/fall time specification. When set LOW, the serial output will meet the SMPTE 292M and SMPTE 424M rise/fall time specification ...
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... Common mode CMOUT Input Voltage V Common mode CMIN SD/HD, DISABLE EQ_EN Input GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 Value -0. 2.5kV -50°C < T < 125° +0.3)V CC -40°C to +85°C 260°C Min 3 ...
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... CC A Parameter Symbol Conditions OSP Drive Strength – – NOTES: 1. Power consumed in GS2988 only. Termination resistors draw extra current. 2.3 AC Electrical Characteristics Table 2-2: AC Electrical Characteristics V = 3.3V ±5% or 2.5V ±5 -40°C to +85°C, unless otherwise shown CC A Parameter Symbol ...
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... Rise/Fall time measured between 20% and 80%. 4. Single-ended into 75Ω external load. 5. Calculated as the actual positive bit-width compared to the expected positive bit-width using a 1010 pattern. 6. ORL depends on board design. The GS2988 achieves this specification on Gennum's evaluation boards. GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability ...
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... DDI EQ RC 10k 700p for Trace Equalization Figure 3-1: Differential Input Stage (DDI/DDI) Figure 3-3: Control Input (DISABLE, SD/HD, EQ_EN) GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 DDI * RC Network Figure 3-2: Differential Output Stage (SDO/SDO Pull-up 80μA typical (50-150μ ...
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... Floating 4.3 Serial Data Output The GS2988 features a current-mode differential output driver capable of driving up to 1800mVpp single-ended into a 1m length of 75Ω cable terminated at both ends. The output signal amplitude or swing is user configurable using an external RSET resistor. The SDO/SDO pin of the device provide the serial data outputs. ...
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... Table 4-4: Output Signal Presence Indicator Pre-Driver Output Valid signal present No valid signal present 4.6 Output Amplitude (RSET) The output amplitude of the GS2988 can be adjusted by changing the value of the RSET resistor as shown in Figure 4-1. For an 800mV a value of 750Ω is required. A ±1% SMT resistor should be used. ...
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... The RSET resistor is part of an internal DC feedback loop in the GS2988. The resistor should be placed as close as possible to the R plane (traces/wires may cause instability). In addition, the PCB capacitance should be minimized at this node by removing the PCB groundplane beneath the RSET resistor and the RSET pin. ...
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... Output Return Loss Measurement The GS2988 has a feature which allows users to measure ORL reliably while the device is still powered. The device can be put into a BALANCE mode which prevents the outputs from toggling while the device is powered on, allowing the ORL to be measured while the device is still powered ...
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... EMI) • The PCB ground plane is removed under the GS2988 RSET pin and resistor to minimize parasitic capacitance. The RSET resistor should be directly connected to the VCC plane • ...
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... Package & Ordering Information 6.1 Package Dimensions 4.00+/-0.05 PIN 1 AREA 2X C 0.15 2X 0.15 C 0.10 C 16X 0.08 C SEATING PLANE GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 A 2.76+/-0.10 DATUM A B CENTER TAB DETAIL B DETAIL B DATUM B 0.65 C 0.65/2 0.65 DETAIL B SCALE:NTS 0.35+/-0.05 16X 0. 0.05 C DATUM TERMINAL TIP ...
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... Package Drawing Reference Moisture Sensitivity Level Junction to Case Thermal Resistance, θ j-c Junction to Air Thermal Resistance, θ (at zero airflow) j-a Psi, Ψ Pb-free and RoHS compliant, Halogen-free GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 0.35 0.55 NOTE: All dimensions are in millimeters. ...
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... Figure 6-1: Maximum Pb-free Solder Reflow Profile (Preferred) 6.5 Marking Diagram Pin 1 ID GS2988 XXXXE3 YYWW GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 Figure 6-1. 60-150 sec. 20-40 sec. 3°C/sec max 6° ...
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... All other trademarks mentioned are the properties of their respective owners. GENNUM and the Gennum logo are registered trademarks of Gennum Corporation. © Copyright 2009 Gennum Corporation. All rights reserved. www.gennum.com GS2988 Dual-Slew-Rate, Cable Driver with 3Gb/s Capability Data Sheet 52131 - 1 February 2010 ...