ICS84025 datasheet(6/12 Pages) ICST

6 / 12 page

84025EM

www.icst.com/products/hiperclocks.html

REV. A APRIL 16, 2003

Integrated

Circuit

Systems, Inc.

ICS84025

CRYSTAL-TO-LVCMOS / LVTTL

FREQUENCY SYNTHESIZER WITH FANOUT BUFFER

PRELIMINARY

SCOPE

LVCMOS

3.3V OUTPUT LOAD AC TEST CIRCUIT

3.3V/2.5V OUTPUT LOAD AC TEST CIRCUIT

OUTPUT SKEW

3.3V/1.8V OUTPUT LOAD AC TEST CIRCUIT

odc, t

PW & tPERIOD

SCOPE

LVCMOS

2.05V±5%

DDO

GND = -1.25V±5%

1.25V±5%

SCOPE

LVCMOS

DD, VDDA, VDDO = 1.65V±5%

GND = -1.65V±5%

tsk(o)

DDO

Q0:Q5

➤

DDO

Cycle-to-Cycle Jitter

tjit(cc) = tcycle n –tcycle n+1

1000 Cycles

tcycle n

tcycle n+1

Period Jitter

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

Pulse Width

PERIOD

odc =

DDO

Q0:Q5

OUTPUT RISE/FALL TIME

Clock Outputs

20%

80%

20%

PARAMETER MEASUREMENT INFORMATION

GND = -0.9V±0.075V

DDO

2.4± 0.9V

0.9V±0.075V

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