13

ICS951412B

1232A—06/12/06

Electrical Characteristics - SRC 0.7V Current Mode Differential Pair

TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL =2pF, RS=33.2

Ω, RP=49.9Ω, ΙREF = 475Ω

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

NOTES

Current Source Output

Impedance

Zo

VO = Vx

3000

Ω

1

Voltage High

VHigh

660

850

1,3

Voltage Low

VLow

-150

150

1,3

Max Voltage

Vovs

1150

1

Min Voltage

Vuds

-300

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

ppmsee Tperiod min-max values

-300

300

ppm1,2

75.00 MHz nominal

8.5684

8.5714

8.5744

ns

2

75.00 MHz spread

8.5684

8.6244

ns

2

100.00 MHz nominal

9.9970 10.0000 10.0030

ns

2

100.00 MHz spread

9.9970

10.0530

ns

2

116.67 MHz nominal

13.3303 13.3333 13.3363

ns

2

116.67 MHz spread

13.3303

13.3863

ns

2

133.33 MHz nominal

7.4972

7.5002

7.5032

ns

2

133.33 MHz spread

7.4972

7.5532

ns

2

Absolute min period

Tabsmin

@100.00MHz nominal/spread

9.8720

ns

1,2

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

30

125

ps

1

Fall Time Variation

d-tf

30

125

ps

1

Duty Cycle

dt3

Measurement from differential

wavefrom

45

55

%

1

Group Skew

tsrc-skew

Measurement from differential

wavefrom

250

ps

Jitter, Cycle to cycle

tjcyc-cyc

Measurement from differential

wavefrom

100

ps

1

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

2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is at 14.31818MHz

3I

REF = VDD/(3xRR). For RR = 475

Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω.

Tperiod

Average period

mV

Measurement on single ended

signal using absolute value.

mV

Statistical measurement on

single ended signal using

oscilloscope math function.