PI6C484321 datasheet(7/9 Pages) PERICOM

7 / 9 page

PS8765A

08/01/05

PI6C484321

260MHz Crystal-to-3.3V Differential

LVPECL Frequency Synthesizer

AC Characteristics, VCC = VCCA = VCCO = 3.3V ±5%, TA = 0°C to 70°C

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

FOUT

Output frequency

103.3

260

MHz

tjit(per)

Period jitter, RMS(1, 3)

tsk(o)

Output skew(2, 3)

Output rise time

20% to 80%

200

700

Output fall time

20% to 80%

200

700

Setup time

Mx, Nx to nP_LOAD

S_DATA to S_CLOCK

S_CLOCK to S_LOAD

Hold time

Mx, Nx to nP_LOAD

S_DATA to S_CLOCK

S_CLOCK to S_LOAD

odc

tLOCK

PLL lock time

Notes:

Jitter performance using XTAL inputs.

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

differential cross points.

This parameter is defined in accordance with JEDEC standard 65

Input Frequency Characteristics, VCC = VCCA = VCCO = 3.3V±5%, TA 0°C to 70°C

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Units

fIN

Input Frequency

TEST_CLK (1)

MHz

XTAL, XTAL2(1)

S_CLOCK

Notes

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

MHz

Equivalent Series resistance (ESR)

Ω

Shunt Capacitance

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