ADATE320 datasheet(39/83 Pages) AD

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ADATE320

Data Sheet

Rev. B | Page 38 of 82

PULSE WIDTH (ns)

–50

–30

–10

0.4

9.4

8.4

7.4

6.4

5.4

4.4

3.4

2.4

1.4

NEGATIVE PULSE

POSITIVE PULSE

Figure 57. Normal Window Comparator Pulse Width (Positive/Negative)

Trailing Edge Timing Error, 1.0 V Input Swing

TIME (ns)

–0.2

1.2

1.0

0.8

0.6

0.4

0.2

ERT RISE

INPUT EDGE RISE

Figure 58. Normal Window Comparator Equivalent Rise Time (ERT), 1.0 V

Input Swing, 50 ps 20% to 80%; 50 Ω Terminated

TIME (ns)

–0.2

1.2

1.0

0.8

0.6

0.4

0.2

ERT FALL

INPUT EDGE FALL

Figure 59. Normal Window Comparator Equivalent Fall Time (EFT), 1.0 V

Input Swing, 50 ps 20% to 80%; 50 Ω Terminated

200mV/DIV

200ps/DIV

Figure 60. Normal Window Comparator Eye Diagram, 800 Mbps, PRBS31,

1.0 V Input Swing; 50 Ω Terminated

200mV/DIV

100ps/DIV

Figure 61. Normal Window Comparator Eye Diagram, 2.5 Gbps, PRBS31,

1.0 V Input Swing; 50 Ω Terminated

200mV/DIV

50ps/DIV

Figure 62. Normal Window Comparator Eye Diagram, 4.0 Gbps, PRBS31,

1.0 V Input Swing; 50 Ω Terminated

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