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APPLICATIONS

OutputEnable/ProgrammingInterfaceandEEPROMforConfigurationSettings

Crystal

Oscillator

Input

Feedback

Divider

LoopFilter

VCO1

VCO2

X-tal

CE

SDATA

CLK

NCLK

B0216-01

CDCE421

SCAS842 – APRIL 2007

Fully Integrated Wide-Range, Low-Jitter, Crystal-Oscillator Clock Generator

• Differential Low-Voltage Positive

Emitter-Coupled Logic (LVPECL) Output,

• Single 3.3V Supply

10.9-MHz to 1.175-GHz Frequency Range

• High-Performance Clock Generator

• Two Fully Integrated Voltage-Controlled

Incorporating Crystal-Oscillator Circuitry With

Oscillators (VCOs) Support Wide Output

Integrated Frequency Synthesizer

Frequency Range

• Low-Output Jitter, as Low as 380 fs (rms

• Fully Integrated Programmable Loop Filter

Integrated Between 10 kHz–20 MHz)

• Typical Power Consumption 240 mW in LVDS

• Low Phase Noise at High Frequency; at 708

Mode and 300 mW in LVPECL Mode

MHz It Is Less Than –109 dBc/Hz at 10-kHz

and –146 dBc/Hz at 10-MHz Offset From the

• Chip-Enable Control Pin

Carrier

• Simple Serial Interface Allows Programming

• Supports Crystal Frequencies Between

After Manufacturing

27.35 MHz to 38.33 MHz

• Integrated On-Chip Non-Volatile Memory

• Output Frequency Ranges From 10.9 MHz up

(EEPROM) to Store Settings Without the Need

to 766.7 MHz and From 875.2 MHz up to

to Apply High Voltage to the Device

1175 MHz

• Die or QFN24 Package

• Low-Voltage Differential Signaling (LVDS)

• ESD Protection Exceeds 2 kV HBM

Output, 100-

Ω Differential Off-Chip

• Industrial Temperature Range –40°C to 85°C

Termination, 10.9-MHz to 400-MHz Frequency

Range

A

• Low-Cost, High-Frequency Crystal Oscillator

A

A

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.