CDCE949PW

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Texas Instruments

PROGRAMMABLE 4-PLL VCXO CLOCK SYNTHESIZER WITH 2.5-V OR 3.3-V LVCMOS OUTPUTS

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CDCE949PW

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Texas Instruments

PROGRAMMABLE 4-PLL VCXO CLOCK SYNTHESIZER WITH 2.5-V OR 3.3-V LVCMOS OUTPUTS

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Description Specifications Series Pricing CAD Documents

Description

General part information

CDCE949 Series

The CDCE949 is a modular PLL-based low-cost high-performance programmable clock synthesizer, multiplier, and divider. It generates up to 9 output clocks from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230 MHz, using up to four independent configurable PLLs.

The CDCE949 has separate output supply pins, VDDOUT, of 2.5 V to 3.3 V.

The input accepts an external crystal or LVCMOS clock signal. If an external crystal is used, an on-chip load capacitor is adequate for most applications. The value of the load capacitor is programmable from 0 to 20 pF. Additionally, an on-chip VCXO is selectable, allowing synchronization of the output frequency to an external control signal, that is, a PWM signal.

Technical Specifications

Parameters and characteristics for this part

Specification	CDCE949PW

Differential Input	No
Differential Output	No
Divider	Yes
Frequency - Max	230 MHz
Input	LVCMOS, Crystal
Input Ratio	1
Mounting Type	Surface Mount
Multiplier	No
Number of Circuits	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output	LVCMOS
Output Ratio	9
Package Length	0.173 in
Package Name	24-TSSOP
Package Width	4.4 mm
PLL	Yes with Bypass
Type	PLL Clock Generator
Voltage - Supply (Maximum)	1.9 V
Voltage - Supply (Minimum)	1.7 V

CDCE949 Series

Programmable 4-PLL VCXO clock synthesizer with 2.5-V or 3.3-V LVCMOS outputs

Part	Differential Output	Differential Input	Qualification	Operating Temperature (Max)	Operating Temperature (Min)	Grade	Frequency - Max	Output Ratio	Input Ratio	Type	Package Name	Input	Mounting Type	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Number of Circuits	Multiplier	Divider	PLL	Output	Package Width	Package Length	Supplied Contents	Utilized IC / Part	Function	Contents
Texas Instruments CDCE949QPWRQ1	No	No	AEC-Q100	125 °C	-40 °C	Automotive	230 MHz	9	1	Spread Spectrum Clock Driver	24-TSSOP	Crystal LVCMOS	Surface Mount	1.9 V	1.7 V	1	No	Yes	Yes with Bypass	LVCMOS	4.4 mm	0.173 in
Texas Instruments CDCE949PW	No	No		85 °C	-40 °C		230 MHz	9	1	PLL Clock Generator	24-TSSOP	Crystal LVCMOS	Surface Mount	1.9 V	1.7 V	1	No	Yes	Yes with Bypass	LVCMOS	4.4 mm	0.173 in
Texas Instruments CDCE949PWR	No	No		85 °C	-40 °C		230 MHz	9	1	PLL Clock Generator	24-TSSOP	Crystal LVCMOS	Surface Mount	1.9 V	1.7 V	1	No	Yes	Yes with Bypass	LVCMOS	4.4 mm	0.173 in
Texas Instruments CDCE949PWRG4	No	No		85 °C	-40 °C		230 MHz	9	1	PLL Clock Generator	24-TSSOP	Crystal LVCMOS	Surface Mount	1.9 V	1.7 V	1	No	Yes	Yes with Bypass	LVCMOS	4.4 mm	0.173 in
Texas Instruments CDCE949PERF-EVM										Timing													Board(s)	CDCE949PERF	Clock Generator	Board