ICS8430-62 Datasheet

500MHz CRYSTAL-TO-3.3V, 2.5V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER

ICS8430AY-62 REVISION A JULY 2, 2009

7

©2009 Integrated Device Technology, Inc.

NOTE 1: For the input crystal and REF_CLK frequency range, the M value must be set for the VCO to operate within the 250MHz to 500MHz

range. Using the minimum input frequency of 14MHz, valid values of M are 286

≤ M ≤ 511. Using the maximum input frequency of 27MHz,

valid values of M are 149

≤ M ≤ 296.

Table 6. Crystal Characteristics

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Input

Frequency

REF_CLK; NOTE 1

14

27

MHz

XTAL_IN, XTAL_OUT; NOTE 1

14

27

MHz

S_CLOCK

50

MHz

Input

Rise/Fall

Time

REF_CLK

5ns

S_CLOCK, S_DATA, S_LOAD

6

ns

nP_LOAD

50

ns

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Mode of Oscillation

Fundamental

Frequency

14

27

MHz

Equivalent Series Resistance (ESR)

50

Ω

Shunt Capacitance

7pF