17

Integrated

Circuit

Systems, Inc.

ICS951413

0929D—10/30/06

Electrical Characteristics - SRC 0.7V Current Mode Differential Pair

TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL =2pF, RS=33.2Ω, RP=49.9Ω, ΙREF = 475Ω

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS Notes

Current Source Output

Impedance

Zo

VO = Vx

3000

Ω

1

Voltage HighVHigh

660

850

1,3

Voltage Low

VLow

-150

150

1,3

Max VoltageVovs

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

ppm

see Tperiod min-max

values

-300

300

ppm

1,2

100.00MHz nominal

9.9970

10.0030

ns

2

100.00MHz spread

9.9970

10.0533

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

Skew

tsk3

VT = 50%

250

ps

1

Jitter, Cycle to cycle

tjcyc-cyc

Measurement from

differential wavefrom

125

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 REFOUT is at 14.31818MHz

3I

REF = VDD/(3xRR). For RR = 475Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω.

mV

Measurement on single

ended signal using

mV

Average period

Tperiod

Statistical measurement

on single ended signal