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SCAS844D – AUGUST 2007 – REVISED MARCH 2010
Programmable 4-PLL VCXO Clock Synthesizer with 1.8V, 2.5V and 3.3V LVCMOS Outputs
Check for Samples:
1
FEATURES
•
• Member of Programmable Clock Generator
Family
– CDCE913/CDCEL913: 1 PLLs, 3 Outputs
– CDCE925/CDCEL925: 2 PLLs, 5 Outputs
– CDCE937/CDCEL937: 3 PLLs, 7 Outputs
–
CDCE949/CDCEL949: 4 PLLs, 9 Outputs
• In-System Programmability and EEPROM
– Serial Programmable Volatile Register
– Non-Volatile EEPROM to Store Customer
Settings
• Highly Flexible Clock Driver
– Three User-Definable Control Inputs
[S0/S1/S2] e.g. SSC-Selection, Frequency
Switching, Output Enable or Power Down
– Generates Highly-Accurate Clocks for
Video, Audio, USB, IEEE1394, RFID,
Generates Common Clock Frequencies
Used with TI DaVinci™, OMAP™, DSPs
– BlueTooth™, WLAN, Ethernet and GPS
– Programmable SSC Modulation
– Enables 0-PPM Clock Generation
• Selectable Output Frequency up to 230 MHz
234
•
•
•
•
•
•
Flexible Input Clocking Concept
– External Crystal: 8 to 32 MHz
– On-Chip VCXO: Pull-Range ±150 ppm
– Single-Ended LVCMOS up to 160 MHz
Low-Noise PLL Core
– Integrated PLL Loop Filter Components
– Very Low Period Jitter (typ 60 ps)
Separate Output Supply Pins
– CDCE949: 3.3 V and 2.5 V
– CDCEL949: 1.8 V
1.8 V Device Power Supply
Wide Temperature Range –40° C to 85° C
Packaged in TSSOP
Development and Programming Kit for Ease
PLL Design and Programming (TI-Pro Clock)
APPLICATIONS
•
•
D-TV, HD-TV, STB, IP-STB, DVD-Player,
DVD-Recorder, Printer
General Purpose Frequency Synthesizing
V
DD
Vctr
GND
V
DDOUT
Crystal or
Clock Input
VCXO
XO
LVCMOS
PLL1
3
EEPROM
Programming
and
Control Register
with SSC
LV
CMOS
Y1
LV
CMOS
Y2
S2/S1/S0 or
SDA/SCL
LV
CMOS
Y3
LV
CMOS
Y4
PLL2
with SSC
Divider
and
Output
Control
LV
CMOS
Y5
LV
CMOS
Y6
PLL3
with SSC
LV
CMOS
Y7
Xin/Clk
S0
Vdd
Vctr
GND
Vddout
Y4
Y5
GND
Vddout
Y8
Y9
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Xout
S1/SDA
S2/SCL
Y1
GND
Y2
Y3
Vddout
Y6
Y7
GND
Vdd
LV
CMOS
Y8
PLL4
with SSC
LV
CMOS
Y9
1
2
3
4
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.
DaVinci, OMAP, Pro Clock are trademarks of Texas Instruments.
BlueTooth is a trademark of Bluetooth SIG, Inc.
I
2
C is a trademark of Philips Electronics.
Copyright © 2007–2010, Texas Instruments Incorporated
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.
TI [ TEXAS INSTRUMENTS ]
