ICS841S02BGILF datasheet(9/17 Pages) IDT

9 / 17 page

IDT™ / ICS™ PCI EXPRESS CLOCK GENERATOR

ICS841S02BGI REV. C NOVEMBER 1, 2007

ICS841S02I

PCI EXPRESS™ CLOCK GENERATOR

PRELIMINARY

PARAMETER MEASUREMENT INFORMATION

DIFFERENTIAL MEASUREMENT POINTS FOR DUTY CYCLE/PERIOD

CYCLE-TO-CYCLE JITTER

3.3V HCSL OUTPUT LOAD AC TEST CIRCUIT

DIFFERENTIAL MEASUREMENT POINTS FOR RISE/FALL TIME

RMS PERIOD JITTER

OUTPUT SKEW

tsk(o)

nSRCx

SRCx

nSRCy

SRCy

VOH

VREF

VOL

Mean Period

(First edge after trigger)

Reference Point

(Trigger Edge)

σ contains 68.26% of all measurements

σ contains 95.4% of all measurements

σ contains 99.73% of all measurements

σ contains 99.99366% of all measurements

σ contains (100-1.973x10-7)% of all measurements

Histogram

➤

tcycle n

tcycle n+1

tjit(cc) = tcycle n – tcycle n+1

1000 Cycles

SRCT1:2

SRCC1:2

475

Measurement

Point

100

Measurement

Point

49.9

HCSL

GND

2pF

3.3V±5%

DD_REF,

DD_SRC

3.3V±5%

DDA

Clock Period (Differential)

Positive Duty

Cycle (Differential)

Negative Duty

Cycle (Differential)

Q/nQ

0.0V

Q/nQ

VIL = -150mV

VIH = +150mV

0.0V

Fall Edge Rate

Rise Edge Rate

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