Data Sheet #: SG127

Page 3 of 12

Rev: 00

Date: 04/25/06

Recommended Operating Specifications

Table 2

Symbol

Parameter

Minimum

Nominal

Maximum

Units

Notes

V

CC

Power Supply Voltage

3.135

3.3

3.465

Volts

2, 9

I

CC

Power Supply Current

-

-

270

mA

5, 6

T

OP

Temperature Range

0

-

70

deg. C

F

O

Available Output Frequencies

Q1,Q2

77.76

-

155.52

MHz

F

REF

Reference Frequency

-

19.44

-

MHz

F

CAP

Capture/Pull-in Range

-25

-

25

ppm

F

BW

Jitter Filter Bandwidth

-

8

15

Hz

3

T

JTOL

Input Jitter Tolerance

-

-

31.25

us

(Input Jitter Frequencies > 10 Hz)

T

AQ

Acquisition Time

-

100

-

ms

4

J

GEN

Jitter Generation

Q1,Q2

-

-

1

ps RMS

7

Input And Output Characteristics

Table 3

Symbol

Parameter

Minimum

Nominal

Maximum

Units

Notes

CMOS Input Characteristics

V

IH

High Level Input Voltage

2

-

5.5

V

V

IL

Low Level Input Voltage

0

-

0.8

V

T

IR

Input Reference Pulse Width

12.5

-

-

nS

T

IRF

Input Rise and Fall Time (20% to 80%)

-

-

5

nS

8

LVPECL Output Characteristics

V

OH

High Level Output Voltage

2.27

2.34

2.52

V

5

V

OL

Low Level Output Voltage

1.49

1.51

1.68

V

5

C

L

Output Capacitance

-

-

10

pF

T

SKEW

Differential Output Skew

-

50

-

ps

5

T

RF

Output Rise and Fall Time (20% to 80%)

-

-

1

ns

5

DC

Duty Cycle

4550

55%

5

NOTES:

1: Operation of the device at these or any other condition beyond those

listed under Recommended Operating Specifications is not implied.

Exposure to Absolute Maximum Rating conditions for extended

periods of time may affect device reliability.

2: Requires external regulation and supply decoupling. (22uF, 330 pF)

3: 3dB loop response.

4: From a 20 ppm step in reference frequency.

5: With LVPECL termination as defined by figure 8 (Z

6: Maximum I

7: Jitter based on SONET OC-48 bandwidth ( 12 kHz - 20 MHz).

8: Avoid meta-stable input signals

9: Vcc ramp rate must be monotonic rising. Ramp must be greater

than 300 V/s from 2V to 3V.