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CDCE949PW

TICDCE949PW

Texas Instruments
PLL Clock Generator IC 230MHz 1 24-TSSOP (0.173", 4.40mm Width)
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Overview

The CDCE949PW is a modular, PLL-based programmable clock generator designed to provide flexible frequency synthesis for high-performance systems. It features an integrated EEPROM for non-volatile storage of configuration data and supports up to nine LVCMOS outputs derived from a single input source.

Why Choose This Part

The IC offers excellent flexibility with in-system programmability via I2C and an integrated EEPROM for stand-alone operation. Its 1.8V core voltage minimizes power consumption, while the ability to generate 0ppm clock signals and apply SSC modulation simplifies EMI compliance and system timing design.

Applications

Digital Video Systems
Generating precise pixel and reference clocks for video processing and display interfaces.
Embedded Computing
Providing multiple synchronized clock signals for processors, memory controllers, and peripherals in compact designs.
Consumer Electronics
Utilizing Spread Spectrum Clocking (SSC) to reduce electromagnetic interference (EMI) in high-speed digital products.
Communication Equipment
Acting as a centralized frequency source for networking hardware requiring stable LVCMOS clock outputs up to 230MHz.

Key Specifications

PLL Yes with Bypass
Type PLL Clock Generator
Input LVCMOS, Crystal
Output LVCMOS
Mounting Type Surface Mount
Package / Case 24-TSSOP (0.173", 4.40mm Width)
Frequency - Max 230MHz
Voltage - Supply 1.7V ~ 1.9V
Divider/Multiplier Yes/No
Number of Circuits 1
Ratio - Input:Output 1:9
Operating Temperature -40degC ~ 85degC
Supplier Device Package 24-TSSOP
Differential - Input:Output No/No

Getting Started

Engineers can configure the CDCE949PW using Texas Instruments' ClockPro software to calculate PLL settings and generate hex files for I2C programming. For hardware prototyping, ensure the 1.7V to 1.9V supply rails are properly decoupled and consider the TI Pro-Clock evaluation platform for performance verification.

Also Consider

Si5351A Skyworks Solutions Inc. - A highly popular I2C programmable clock generator that supports a wider supply voltage range and up to 8 outputs.