18

Integrated

Circuit

Systems, Inc.

ICS952607

0734A—07/26/05

Electrical Characteristics - CPU & SRC 0.7V Current Mode Differential Pair

TA = 0 - 70°C; VDD = 3.3V +/-5%; CL =2pF

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

NOTES

Current Source Output

Impedance

Zo

1

VO = Vx

3000

Ω

1

Voltage High

VHigh

660

850

1

Voltage Low

VLow

-150

150

1

Max Voltage

Vovs

1150

1

Min VoltageVuds

-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

-300

300

ppm1,2

Rise Time

tr

VOL = 0.175V, VOH = 0.525V

175

700

ps

1

Fall Time

tf

VOH = 0.525V VOL = 0.175V

175

700

ps

1

Rise Time Variation

d-tr

125

ps

1

Fall Time Variation

d-tf

125

ps

1

Duty Cycle

dt3

Measurement from differential

wavefrom

45

55

%

1

Skew

tsk3

VT = 50%

100

ps

1

Jitter, Cycle to cycle

tjcyc-cyc

Measurement from differential

wavefrom

125

ps

1

1Guaranteed by design, not 100% tested in production.

SRC clock outputs run at only 100MHz or 200MHz, specs for 133.33 and 166.66 do not apply to SRC clock pair.

2 All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at

14.31818MHz

Statistical measurement on single

ended signal using oscilloscope

math function.

mV

Measurement on single ended

signal using absolute value.

mV