Eight Output Differential Buffer for PCIe Gen 2

ICS9DB803DI

REV A

06/18/08

ICS9DB803DI

Eight Output Differential Buffer for PCIe for Gen 2

9

Electrical Characteristics - DIF 0.7V Current Mode Differential Pair

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS NOTES

Current Source Output

Impedance

Zo

1

3000

Ω

1

Voltage HighVHigh

660

850

1,3

Voltage Low

VLow

-150

150

1,3

Max VoltageVovs

1150

1

Min Voltage

Vuds

-300

1

Crossing Voltage (abs)

Vcross(abs)

250

550

mV

1

Crossing Voltage (var)

d-Vcross

Variation of crossing over all edges

140

mV

1

Long Accuracy

ppmsee Tperiod min-max values

0

ppm1,2

Rise Time

175

700

ps

1

Fall Time

175

700

ps

1

Rise Time Variation

125

ps

1

Fall Time Variation

125

ps

1

Duty Cycle

Measurement from differential wavefrom

45

50

55

%

1

Skew

60

ps

1

PLL mode

40

50

ps1,5

BYPASS mode as additive jitter

15

50

ps1,5

PCIe Gen 1 specs

(pk to pk value)

30

86

ps

1,6,7

PCIe Gen 2 specs

(rms value)

2.6

3.1

ps

1,6,7

PCIe Gen 1 specs

(pk to pk value)

40

86

ps

1,6,7

PCIe Gen 2 specs

(rms value)

2.8

3.1

ps

1,6,7

accuracy requirements. The 9DB403/803 itself does not contribute to ppm error.

Jitter, Cycle to cycle

Jitter, Phase

Statistical measurement on single ended signal

using oscilloscope math function.

mV

Measurement on single ended signal using

absolute value.

mV