Micrel, Inc.

SY89538L

June 2006

M9999-062706-D

10

AC Electrical Characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Units

XTAL Input Frequency Range

Note 7

14

18

MHz

Reference Input Frequency Range

See Table 8

9.325

756

MHz

Zero Delay Input Frequency Range

See Table 9

29.375

756

MHz

INSEL = LOW

9.325

94.5

MHz

Phase Detector Operating

Frequency Range

INSEL = HIGH

14

18

MHz

Output Frequency Range

29.375

756

MHz

Internal VCO Frequency Range

2352

3024

MHz

Output-to-Output

Note 8

15

75

ps

Minimum PLL Lock Time

10

ms

Loop Filter Optimized for Cycle-to-Cycle Jitter

• R = 50Ω

• C1 = 0.47µF

• C2 = 1000pF

Note 9

4

6

Note 9

5

14

Note 10

80

150

1-Sigma Cycle-to-Cycle Jitter (XTAL Input)

1-Sigma Cycle-to-Cycle Jitter (RFCK Reference)

Total Jitter

Spur

-35

dBc@

fphase

XTAL/RFCK Crosstalk-Induced Jitter

Note 11

0.7

BW

PLL Bandwidth

See Table 10

11.1

38.4

kHz

43

50

57

%

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

LVPECL

100

250

400

ps

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

LVDS

80

150

300

ps

Minimum SYNC Pulse Width

See “Synchronization”

section

8

Internal

clock

cycle

Synchronization Delay

See “Synchronization”

section

8

Internal

clock

cycle

Notes:

7.

Fundamental mode, series resonant crystal.

8.

The output-to-output skew is defined as the worst-case difference between any outputs within a single device operating at the same voltage

and temperature.

9.

output signal.

than the specified peak-to-peak jitter value.

11. Crosstalk is measured at the output while applying two similar differential clock frequencies that are asynchronous with respect to each

other at the inputs.