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CL431 , Precision Adjustable Shunt Reference
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CDCE925PW-CDCE925PWR
Programmable 2-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs
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CDCE925, CDCEL925SCAS847I–JULY 2007–REVISED OCTOBER 2016
CDCE(L)925: Flexible Low Power LVCMOS Clock Generator
With SSC Support for EMI Reduction Features Memberof Programmable Clock Generator
Family CDCEx913: 1-PLL,3 Outputs CDCEx925: 2-PLL,5 Outputs CDCEx925: 3-PLL,7 Outputs CDCEx949: 4-PLL,9 Outputs In-System Programmability and EEPROM Serial Programmable Volatile Register Nonvolatile EEPROMto Store Customer
Settings Flexible Input Clocking Concept External Crystal:8 MHzto32 MHz On-Chip VCXO: Pull Range ±150 ppm Single-Ended LVCMOS Upto 160 MHz Free Selectable Output Frequency Upto
230 MHz Low-Noise PLL Core PLL Loop Filter Components Integrated Low Period Jitter (Typical60 ps) Separate Output Supply Pins CDCE925: 3.3V and 2.5V CDCEL925: 1.8V Flexible Clock Driver Three User-Definable Control Inputs
[S0/S1/S2], for Example, SSC Selection,
Frequency Switching, Output Enable,or Power
Down Generates Highly Accurate Clocks for Video,
Audio, USB, IEEE1394, RFID, Bluetooth®,
WLAN, Ethernet™, and GPS Generates Common Clock Frequencies Used OMAP™, DSPs Modulation Clock Generationto 85°C Kitfor Easy PLL
ApplicationsD-TVs, STBs, IP-STBs, DVD Players, DVD
Recorders, and Printers
DescriptionThe CDCE925 and CDCEL925 are modular PLL-
based low-cost, high-performance, programmable
clock synthesizers, multipliers, and dividers. They
generate upto five output clocks froma single input
frequency. Each output can be programmed in-
system for any clock frequencyupto 230 MHz, usingto two independent configurable PLLs.
The CDCEx925 hasa separate output supply pin,
VDDOUT, whichis 1.8V for CDCEL925 and 2.5Vto
3.3V for CDCE925.
The input accepts an external crystalor LVCMOS
clock signal.In caseofa crystal input, an on-chip
load capacitoris adequate for most applications. The
valueof the load capacitoris programmable from0to pF. Additionally, an on-chip VCXOis selectable
which allows synchronizationof the output frequencyan external control signal, thatis, PWM signal.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application Schematic
