CDCE18005

更新时间： 2024-11-18 06:47:07

品牌	Logo	应用领域
德州仪器 - TI		时钟发生器
页数	文件大小	规格书
58页	1886K
描述
Five/Ten Output Clock Generator/Buffer

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数据手册

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CDCE18005 数据手册

CDCE18005

www.ti.com........................................................................................................................................................................................... SCAS863–NOVEMBER 2008

Five/Ten Output Clock Generator/Buffer

FEATURES

APPLICATIONS

•

Data Converter and Data Aggregation Clocking

Wireless Infrastructure

Switches and Routers

Medical Electronics

Military and Aerospace

Industrial

•

Universal Input Buffers That Accept LVPECL,

LVDS, or LVCMOS Level Signaling

Fully Configurable Outputs Including

Frequency, Output Format, and Output Skew

Output Multiplexer That Serves as a Clock

Switch Between the Three Reference Inputs

and the Outputs

Clock Fan-out

•

Clock Generation Via AT-Cut Crystal

DESCRIPTION

Integrated EEPROM Determines Device

Configuration at Power-up

The CDCE18005 is

a high performance clock

generator and distributor featuring a high degree of

configurability via a SPI interface, and programmable

start up modes determined by on-board EEPROM.

Specifically tailored for buffering clocks for data

converters and high-speed digital signals, the

CDCE18005 achieves low additive jitter in the 50 fs

RMS⁽¹⁾range. The clock distribution block includes

five individually programmable outputs that can be

configured to provide different combinations of output

formats (LVPECL, LVDS, LVCMOS). Each output can

also be programmed to a unique output frequency

(up to 1.5 GHz⁽²⁾) and skew relationship via a

programmable delay block. If all outputs are

configured in single-ended mode (e.g. LVCMOS), the

CDCE18005 supports up to ten outputs. Each output

can select one of three clock input sources. The input

block includes two universal differential inputs which

support frequencies up to 1500 MHz and an auxiliary

single ended input that can be connected to a CMOS

level clock or configured to connect to an external

crystal via an on board oscillator block.

•

Low Additive Jitter Performance

Universal Output Blocks Support up to 5

Differential, 10 Single-ended, or Combinations

of Differential or Single-ended:

– Low Additive Jitter

– Output Frequency up to 1.5 GHz

– LVPECL, LVDS, LVCMOS, and Special High

Output Swing Modes

– Independent Output Dividers Support

Divide Ratios from 1–80

– Independent limited Coarse Skew Control

on all Outputs

•

Flexible Inputs:

– Two Universal Differential Inputs Accept

Frequencies up to 1500 MHz (LVPECL), 800

MHz (LVDS), or 250 MHz (LVCMOS).

– One Auxiliary Input Accepts Single Ended

Clock Source or Crystal. Auxiliary Input

Accepts Crystals in the Range of 2 MHz–42

MHz or an LVCMOS Input up to 75 MHz.

LVCMOS 25MHz

LVPECL 1.5GHz / LVDS 800MHz

LVCMOS 25MHz

LVPECL 800MHz

LVDS 750MHz

– Clock Generator Mode Using Crystal Input.

•

Typical Power Consumption 1.0W at 3.3V (see

Table 27)

CDCE18005

LVDS 800MHz

Crystal 25MHz

Integrated EEPROM Stores Default Settings;

Therefore, The Device Powers up in a Known,

Predefined State.

LVPECL 1.5GHz

•

Offered in QFN-48 Package

Figure 1. CDCE18005 Application Example

ESD Protection Exceeds 2kV HBM

Industrial Temperature Range –40°C to 85°C

(1) 12 kHz to 20 MHz integration bandwidth.

(2) Maximum output frequency depends on the output format

selected

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...58

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与CDCE18005相关器件

型号	品牌	获取价格	描述	数据表
CDCE18005RGZR	TI	获取价格	Five/Ten Output Clock Generator/Buffer
CDCE18005RGZT	TI	获取价格	Five/Ten Output Clock Generator/Buffer
CDCE401	TI	获取价格	OSCILLATOR IC WITH ELECTRONIC CALIBRATION
CDCE401YS	TI	获取价格	OSCILLATOR IC WITH ELECTRONIC CALIBRATION
CDCE421	TI	获取价格	Fully Integrated Wide-Range, Low-Jitter, Crystal-Oscillator Clock Generator
CDCE421_15	TI	获取价格	Fully Integrated Wide-Range, Low-Jitter, Crystal-Oscillator Clock Generator
CDCE421A	TI	获取价格	Fully-Integrated, Wide Range, Low-Jitter Crystal Oscillator Clock Generator
CDCE421ARGER	TI	获取价格	Fully-Integrated, Wide Range, Low-Jitter Crystal Oscillator Clock Generator
CDCE421ARGET	TI	获取价格	Fully-Integrated, Wide Range, Low-Jitter Crystal Oscillator Clock Generator
CDCE421RGER	TI	获取价格	Fully Integrated Wide-Range, Low-Jitter, Crystal-Oscillator Clock Generator

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