AD8191ASTZ datasheet(9/32 Pages) AD

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Giải thích chi tiết về linh kiện	4:1 HDMI/DVI Switch with Equalization

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AD8191

Rev. 0 | Page 9 of 32

TYPICAL PERFORMANCE CHARACTERISTICS

TA = 27°C, AVCC = 3.3 V, VTTI = 3.3 V, VTTO = 3.3 V, DVCC = 3.3 V, AMUXVCC = 5 V, AVEE = 0 V, DVEE = 0 V, differential input

swing = 1000 mV, TMDS outputs terminated with external 50 Ω resistors to 3.3 V, pattern = PRBS 27 − 1, data rate = 1.65 Gbps, unless

otherwise noted.

REFERENCE EYE DIAGRAM AT TP1

DIGITAL

PATTERN

GENERATOR

AD8191

EVALUATION

BOARD

SERIAL DATA

ANALYZER

SMA COAX CABLE

HDMI CABLE

TP1

TP2

TP3

Figure 4. Test Circuit Diagram for RX Eye Diagram

0.125UI/DIV AT 1.65Gbps

Figure 5. RX Eye Diagram at TP2 (Cable = 2 meters, 30 AWG)

0.125UI/DIV AT 1.65Gbps

Figure 6. RX Eye Diagram at TP2 (Cable = 20 meters, 24 AWG)

0.125UI/DIV AT 1.65Gbps

Figure 7. RX Eye Diagram at TP3, EQ = 6 dB (Cable = 2 meters, 30 AWG)

0.125UI/DIV AT 1.65Gbps

Figure 8. RX Eye Diagram at TP3, EQ = 12 dB (Cable = 20 meters, 24 AWG)

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