MAX3629 Ver la hoja de datos (PDF) - Maxim Integrated

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MAX3629

+3.3V, Low-Jitter, Precision Clock Generator with Multiple Outputs

Maxim Integrated 

+3.3V, Low-Jitter, Precision Clock Generator

with Multiple Outputs

Table 1. Crystal Selection Parameters

PARAMETER

SYMBOL

MIN

Crystal Oscillation Frequency

fOSC

Shunt Capacitance

CO

Load Capacitance

CL

Equivalent Series Resistance (ESR)

RS

Maximum Crystal Drive Level

TYP

MAX

UNITS

25

MHz

7.0

pF

18

pF

50

300

μW

C46 = 33pF, the measured output frequency accuracy

is -1ppm at +25°C ambient temperature.

Crystal Selection

The crystal oscillator is designed to drive a fundamental

mode, AT-cut crystal resonator. See Table 1 for recom-

mended crystal specifications. See Figure 6 for external

capacitance connection.

27pF

CRYSTAL

(CL = 18pF)

33pF

X_IN

X_OUT

Figure 6. Crystal, Capacitors Connection

Figure 5. Crystal Layout

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