9SQL4958BNDGI datasheet(10/20 Pages) IDT

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8-OUTPUT CK420BQ DERIVATIVE

OCTOBER 28, 2016

9SQL4958 DATASHEET

Electrical Characteristics– REF

TA = TAMB; Supply Voltages per normal operation conditions, See Test Loads for Loading Conditions

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

NOTES

Long Accuracy

ppm

see Tperiod min-max values

ppm

1,2

Clock period

Tperiod

25 MHz output

Output High Voltage

VIH

IOH = -2mA

0.8xVDDREF

Output Low Voltage

VIL

IOL = 2mA

0.2xVDDRE

Rise/Fall Slew Rate

trf1

Byte 3 = 1F, VOH = VDD-0.45V, VOL = 0.45V

0.5

0.8

1.1

V/ns

Rise/Fall Slew Rate

trf1

Byte 3 = 5F, VOH = VDD-0.45V, VOL = 0.45V

0.9

1.4

1.9

V/ns

1,3

Rise/Fall Slew Rate

trf1

Byte 3 = 9F, VOH = VDD-0.45V, VOL = 0.45V

1.3

2.0

2.7

V/ns

Rise/Fall Slew Rate

trf1

Byte 3 = DF, VOH = VDD-0.45V, VOL = 0.45V

1.7

2.6

3.5

V/ns

Duty Cycle

dt1X

VT = VDD/2 V

49.8

1,4

Duty Cycle Distortion

dtcd

VT = VDD/2 V

-1

1,5

Jitter, cycle to cycle

tjcyc-cyc

VT = VDD/2 V

250

1,4

Noise floor

tjdBc1k

1kHz offset

-137

dBc

1,4

Noise floor

tjdBc10k

10kHz offset to Nyquist

-140

dBc

1,4

Jitter, phase

tjphREF

12kHz to 5MHz, SSC Off

0.13

0.2

ps (rms)

1,4

Jitter, phase

tjphREF

12kHz to 5MHz, SSC On

1.5

ps (rms)

1,4

Notes

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

3 Default SMBus Value

4 When driven by a crystal.

5 When driven by an external oscillator via the X1 pin, X2 should be floating.

2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is trimmed to 25.00 MHz

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