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GS2974B Datasheet(PDF) 7 Page - Semtech Corporation |
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GS2974B Datasheet(HTML) 7 Page - Semtech Corporation |
7 / 17 page GS2974B GS2974B HD-LINX™ III Adaptive Cable Equalizer Data Sheet 45062 - 3 April 2009 7 of 17 2.3 AC Electrical Characteristics Table 2-2: AC Electrical Characteristics VCC = 3.3V ±5%, TA = 0°C to 70°C, unless otherwise shown Parameter Symbol Conditions Min Typ Max Units Notes Serial input data rate DRSDO – 143 – 2970 Mb/s – Input Voltage Swing ΔV SDI TA =25°C, differential, 270Mb/s and 1.485Gb/s 720 800 950 mVp-p 1 TA =25°C, differential, 2.97Gb/s 720 800 880 mVp-p 1 Output Voltage Swing ΔV SDO 100Ω load, TA =25°C, differential 600 750 1050 mVp-p – Output Jitter of Various Cable Lengths and Data Rates – 270Mb/s Belden 1694A: 0-200m –– 0.2 UI 2 – 270Mb/s Belden 1694A: 200-250m –0.2 – UI 4 – 1.485Gb/s Belden 1694A: 0-160m – − 0.25 UI 2 – 1.485Gb/s Belden 1694A: 160-230m –0.3 – UI 4 –2.97Gb/s Belden 1694A: 0-120m –– 0.4 UI 2 –2.97Gb/s Belden 1694A: 120-140m –0.4 – UI 4 Output Rise/Fall time – 20% - 80% 40 80 220 ps – Mismatch in rise/fall time – – – – 30 ps – Duty cycle distortion – – – – 30 ps – Overshoot – – – – 10 % – Input Return Loss – – 15 21 – dB 3 Input Resistance – single ended – 1.52 – kΩ – Input Capacitance – single ended – 1 – pF – Output Resistance – single ended – 50 – Ω – NOTES: 1. 0m cable length. 2. All parts are production tested. In order to guarantee jitter over the full range of specification (VCC = 3.3V ±5%, TA = 0°C to 70°C, and 720-880mV launch swing from the SDI cable driver) the recommended applications circuit must be used. 3. Tested on CB2974B board from 5MHz to 3GHz. 4. Based on characterization data using the recommended applications circuit, at VCC = 3.3V, TA = 25°C and 800mV launch swing from the SDI cable driver. |
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