May 2008

PCS3P2191A

rev 0.3

Spread Spectrum Clock Generator

4 of 8

Notice: The information in this document is subject to change without notice.

Symbol

Parameter

Min

Typ

Max

Unit

Input low voltage

VSS – 0.3

0.8

V

Input high voltage

2.0

VDD+ 0.3

V

Input low current

-35

Input high current

(XIN / CLKIN)

+35

µA

Input low current

-50

Input high current

(S0:S1:S2)

+50

µA

Output low voltage

VSS

0.4

V

Output high voltage

2.4

V

Dynamic supply current ( Unloaded Outputs)

8

15

26

mA

Static supply current standby mode*

8

mA

Operating voltage

3.0

3.3

3.6

V

Power up time (first locked clock cycle after power up)**

5

mS

Clock output impedance

27

Ω

Input Capacitance

5

pF

Load Capacitance

15

pF

*CLKIN pulled Low

Symbol

Parameter

Min

Typ

Max

Unit

XIN/ CLKIN

Input Clock frequency

10

15

25

MHz

CLKOUT

Output Clock frequency

(Pin 5,6,11,12)

40

60

100

MHz

Spread Spectrum Modulation Rate

26

39

65

KHz

Output rise time ( Measured from 20% to 80% )

1.5

2

nS

Output fall time ( Measured from 80% to 20% )

1.0

1.5

nS

Output frequency Synthesis error (With SSOFF)

0

ppm

Cycle to Cycle Jitter

±250

±325

Period Jitter (With SSOFF)

±150

±200

pS

Output duty cycle

45

50

55

%