13

Integrated

Circuit

Systems, Inc.

ICS950220

0467G—03/02/07

Electrical Characteristics - CPU 0.7V Current Mode Differential Pair

TA = 0 - 70°C; VDD = 3.3 V +/-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

770

850

1

Voltage Low

VLow

-150

5

150

1

Max Voltage

Vovs

756

1150

1

Min Voltage

Vuds

-300

-7

1

Crossing Voltage (abs)

Vcross(abs)

250

350

550

mV

1

Crossing Voltage (var)

d-Vcross

Variation of crossing over all

edges

12

140

mV

1

Long Accuracy

ppm

see Tperiod min-max values

-300

300

ppm

1,2

200MHz nominal

4.9985

5.0015

ns

2

200MHz spread

4.9985

5.0266

ns

2

166.66MHz nominal

5.9982

6.0018

ns

2

166.66MHz spread

5.9982

6.0320

ns

2

133.33MHz nominal

7.4978

7.5023

ns

2

133.33MHz spread

7.4978

5.4000

ns

2

100.00MHz nominal

9.9970

10.0030

ns

2

100.00MHz spread

9.9970

10.0533

ns

2

200MHz nominal

4.8735

ns

1,2

166.66MHz nominal/spread

5.8732

ns

1,2

133.33MHz nominal/spread

7.3728

ns

1,2

100.00MHz nominal/spread

9.8720

ns

1,2

Rise Time

tr

VOL = 0.175V, VOH = 0.525V

175

332

700

ps

1

Fall Time

tf

VOH = 0.525V VOL = 0.175V

175

344

700

ps

1

Rise Time Variation

d-tr

30

125

ps

1

Fall Time Variation

d-tf

30

125

ps

1

Duty Cycle

dt3

Measurement from differential

wavefrom

45

49

55

%

1

Skew

tsk3

VT = 50%

8

150

ps

1

Jitter, Cycle to cycle

tjcyc-cyc

Measurement from differential

wavefrom

60

150

ps

1

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

Statistical measurement on

single ended signal using

oscilloscope math function.

mV

Measurement on single ended

signal using absolute value.

mV

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

14.31818MHz

Tperiod

Average period

Absolute min period

Tabsmin