MAX3624 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX3624

Low-Jitter, Precision Clock Generator with Four Outputs

Maxim Integrated 

Low-Jitter, Precision Clock Generator

with Four Outputs

ELECTRICAL CHARACTERISTICS (continued)

(VCC = +3.0V to +3.6V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C unless otherwise

noted.) (Notes 1, 2, and 3)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Output Skew

Between QB0 and QB1

Between QA and QB0 or QB1,

PECL outputs

15

ps

20

f = 1kHz

-124

Clock Output SSB Phase Noise

at 125MHz (Note 11)

f = 10kHz

f = 100kHz

f = 1MHz

f > 10MHz

-125

-130

-145

-153

dBc/Hz

Note 1: A series resistor of up to 10.5Ω is allowed between VCC and VCCA for filtering supply noise when system power-supply tol-

erance is VCC = 3.3V ±5%. See Figure 3.

Note 2: Guaranteed up to 320MHz for LVPECL output.

Note 3: Guaranteed up to 160MHz for LVCMOS output.

Note 4: All outputs enabled and unloaded. IN_SEL set high.

Note 5: Measured with crystal or AC-coupled, 50% duty-cycle signal on REF_IN.

Note 6: Measured using setup shown in Figure 1 with VCC = 3.3V ±5%.

Note 7: Measured with crystal source.

Note 8: Total TIE including random and deterministic jitter. Measured with Agilent DSO81304A 40GS/s real-time oscilloscope

using 2M sample record length.

Note 9: Measured with 40mVP-P, 100kHz sinusoidal signal on the supply.

Note 10: Measured at 156.25MHz output.

Note 11: Measured with 25MHz crystal or 25MHz reference clock at LVCMOS input with a slew rate of 0.5V/ns or greater.

MAX3624

36Ω

QA_C

499Ω 0.1μF

4.7pF

Z0 = 50Ω

OSCILLOSCOPE

50Ω

Figure 1. LVCMOS Output Measurement Setup

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