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ICS651-03

VOIP Clock Source

Integrated Circuit Systems 

ICS651-03

VOIP Clock Source

Parameter

Nominal Output Impedance

Internal pull-up resistor

Internal pull-down resistor

Symbol

Conditions

ZOUT

RPU

RPD

PDTS pins

Min.

Typ.

20

700

200

Max.

Units

Ω

kΩ

kΩ

AC Electrical Characteristics

Unless stated otherwise, VDD = 3.3V ±5%, Ambient Temperature 0 to +70°C

Parameter

Symbol

Conditions

Min.

Input Frequency

Output Rise Time

Output Fall Time

Output Clock Duty Cycle

fIN

tOR 20% to 80% (Note 1)

tOF 80% to 20% (Note 1)

at VDD/2 (Note 1)

40

Absolute Clock Period Jitter

(Note 1)

Frequency synthesis error

Output Enable Time

tOE PDTS high to output

locked to ±1%

Output Disable Time

tOD PDTS low to tri-state

Note 1: Measured with a 15 pF load.

Typ.

27

1.0

1.0

± 100

0

250

Max. Units

MHz

ns

ns

60

%

ps

ppm

µs

20

ns

MDS 651-03 A

5

Revision 112603

Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201● www.icst.com

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