7

PS8765A

08/01/05

PI6C484321

260MHz Crystal-to-3.3V Differential

LVPECL Frequency Synthesizer

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

Output frequency

103.3

260

MHz

tjit(per)

3

5

ps

tsk(o)

Output skew(2, 3)

15

ps

Output rise time

20% to 80%

200

700

ps

Output fall time

20% to 80%

200

700

Setup time

Mx, Nx to nP_LOAD

5

ns

S_DATA to S_CLOCK

5

S_CLOCK to S_LOAD

5

Hold time

Mx, Nx to nP_LOAD

5

S_DATA to S_CLOCK

5

S_CLOCK to S_LOAD

5

odc

45

55

%

PLL lock time

1

ms

Notes:

1.

Jitter performance using XTAL inputs.

2.

Defined as skew between outputs with the same supply voltage and with equal load conditions. Measured at the output

differential cross points.

3.

This parameter is defined in accordance with JEDEC standard 65

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

Input Frequency

14

40

MHz

14

40

S_CLOCK

50

Notes

1.

For the input crystal and TEST_CLK frequency range, the M value must be set for the VCO to operate with in the 200MHz to 700MHz

range. Using minimum input frequency of 12MHz, valid values of M are 17 ≤ M ≤ 58. Using the maximun frequency of 25MHz, valid

values of M are 8 ≤ M ≤ 28.

Crystal Characteristics

Parameter

Test Condition

Min.

Typ.

Max.

Units

Mode of Oscillation

Fundamental

Frequency

14

40

MHz

Equivalent Series resistance (ESR)

50

Ω

Shunt Capacitance

7

pF