May 2007

PCS1P2860A

rev 0.2

Multi-Output Clock Synthesizer

4 of 7

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

AC Electrical Characteristics

Symbol

Parameter

Min

Typ

Max

Unit

CLKIN/XIN

Input Frequency

25

MHz

Pin 6

25

Pin 1,7,8,10

125

CLK OUT

Output Frequency

Pin 9

127

MHz

Rising edge slew rate (Measured from 20% to 80%)

1.1

1.7

V/nS

Falling edge slew rate (Measured from 80% to 20%)

1.3

2

V/nS

Peak-to-peak Period Jitter @ VDD/2

300

pS

Synthesis Error (Output Frequency)

0

ppm

Output Duty Cycle @ VDD/2

45

50

55

%

PLL Lock Time from Power-Up

3

mS

NOTE: 1CL= 15 pF for outputs < 100 MHz; CL= 10pF for outputs > 100 MHz;

Typical Crystal Oscillator Circuit

Typical Crystal Specifications

Fundamental AT cut parallel resonant crystal

Nominal frequency

25MHz

Frequency tolerance

± 50 ppm or better at 25°C

Operating temperature range

-25°C to +85°C

Storage temperature

-40°C to +85°C

Load capacitance

18pF

Shunt capacitance

7pF maximum

ESR

25Ω

R1 = 510Ω

C1 = 27 pF

C2 = 27 pF