Datasheet > CDCE401YS

CDCE401YS

更新时间： 2024-11-18 03:28:55

品牌	Logo	应用领域
德州仪器 - TI		振荡器电子
页数	文件大小	规格书
19页	311K
描述
OSCILLATOR IC WITH ELECTRONIC CALIBRATION

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CDCE401YS 数据手册

CDCE401

www.ti.com

SCAS820–JUNE 2006

OSCILLATOR IC WITH ELECTRONIC CALIBRATION

FEATURES

Die Terminal Assignment

(Top View = Bond Pad View)

•

Oscillator Gain Stage Implemented

One LVCMOS Frequency Output

Frequency Range of Oscillator Gain Stage =

20 MHz–100 MHz

VDD

•

Frequency Range of LVCMOS Output = 0.625

MHz–100 MHz

Electronic Trimming of Oscillator Using

Capacitance Arrays

XIN

SDATA

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

x/16, x/32

XOUT

VSS

Nonvolatile Storage of Settings Using

EEPROM Technology

FOUT

Easy One-Wire In-Circuit Programming Allows

Programming and Trimming of Oscillator After

Manufacturing

» 1 mm ´ 1 mm

•

EEPROM Programming Without the Need to

Apply High Voltage to the Device

M0018-03

•

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)

DESCRIPTION

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

(1/XTAL-frequency × 2¹⁷~ 1.311 ms–6.554 ms), the capacitances are connected to tune to the trimmed

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.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...19

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