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M0018-03

DESCRIPTION

CDCE401

SCAS820 – JUNE 2006

OSCILLATOR IC WITH ELECTRONIC CALIBRATION

Die Terminal Assignment

• Oscillator Gain Stage Implemented

(Top View = Bond Pad View)

• One LVCMOS Frequency Output

• Frequency Range of Oscillator Gain Stage =

20 MHz–100 MHz

• Frequency Range of LVCMOS Output = 0.625

MHz–100 MHz

• Electronic Trimming of Oscillator Using

Capacitance Arrays

• Programmable Post Dividers x, x/2, x/4, x/8,

x/16, x/32

• Nonvolatile Storage of Settings Using

EEPROM Technology

• Easy One-Wire In-Circuit Programming Allows

Programming and Trimming of Oscillator After

Manufacturing

• EEPROM Programming Without the Need to

Apply High Voltage to the Device

• Available as Die

• Small Form Factor From Less Than 1 mm × 1

mm, Allowing the Smallest Form Factor

Available for Today’s and Next-Generation

Oscillators

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

• Wide VDD Range: 2.25 V up to 3.3 V

• ESD Protection Exceeds JESD22

–

>2000-V Human-Body Model (A114-B)

–

>200-V Machine Model (A115_A)

–

>500-V Charged-Device Model (C101-B.01)

The CDCE401 is designed to achieve today’s demanding challenges for crystal oscillator modules. The small

form factor of the unpackaged die or the QFN package reduces the space consumption of the device to the

technical minimum level of today’s silicon technology.

The on-die trimming capacitance allows frequency trimming of the oscillator module after the manufacturing

process. Therefore, by doing a post-manufacturing programming, crystal manufacturing tolerances can be

trimmed out.

During power up or with each enabling, the CDCE401 oscillator start-up circuit switches off all oscillator

capacitors (CXI, CXO, CBASE) to maximize negative impedance during start-up. After a certain time

frequency range.

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 © 2006, 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.