ICS844256DGI REVISION A AUGUST5, 2010

8

©2010 Integrated Device Technology, Inc.

ICS844256DI Data Sheet

FEMTOCLOCK® CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

Parameter Measurement Information

3.3V Core/3.3V Output Load AC Test Circuit

Output Skew

Output Duty Cycle/Pulse Width/Period

3.3V Core/2.5V Output Load AC Test Circuit

RMS Phase Jitter

Output Rise/Fall Time

SCOPE

Qx

nQx

3.3V±5%

POWER SUPPLY

+–

Float GND

LVDS

VDD,

VDDA

VDDO

tsk(o)

Qx

nQx

Qy

nQy

nQ[0:5]

Q[0:5]

t

PW

t

PERIOD

t

PW

t

PERIOD

odc =

x 100%

Qx

nQx

Float GND

++

–

POWER

SUPPLY

SCOPE

LVDS

VDD

VDDA

VDDO

Offset Frequency

f

1

f

2

Phase Noise Plot

RMS Jitter = Area Under Curve Defined by the Offset Frequency Markers

nQ[0:5]

Q[0:5]

20%

80%

80%

20%

tR

t F

VOD