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CDCVF2505IDRQ1 Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte CDCVF2505IDRQ1
Spiegazioni elettronici  3.3-V CLOCK PHASE-LOCKED LOOP CLOCK DRIVER
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

CDCVF2505IDRQ1 Scheda tecnica(HTML) 1 Page - Texas Instruments

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1
FEATURES
1
2
3
4
8
7
6
5
CLKIN
1Y1
1Y0
GND
CLKOUT
1Y3
VDD 3.3 V
1Y2
D P
(TOP VIEW)
ACKAGE
DESCRIPTION
CDCVF2505-Q1
www.ti.com........................................................................................................................................................................................... SCAS867 – DECEMBER 2008
3.3-V CLOCK PHASE-LOCKED LOOP CLOCK DRIVER
• Qualified for Automotive Applications
• Consumes Less Than 100 µA (Typically) in
Power Down Mode
• Phase-Locked Loop Clock Driver for
Synchronous DRAM and General-Purpose
• Internal Feedback Loop Is Used to
Applications
Synchronize the Outputs to the Input Clock
• Spread-Spectrum Clock Compatible
• 25-Ω On-Chip Series Damping Resistors
• Operating Frequency: 24 MHz to 200 MHz
• Integrated RC PLL Loop Filter Eliminates the
Need for External Components
• Low Jitter (Cycle-to-Cycle): <150 ps Over the
Range 66 MHz to 200 MHz
• Distributes One Clock Input to One Bank of
Five Outputs (CLKOUT Is Used to Tune the
Input-Output Delay)
• Three-States Outputs When There Is No Input
Clock
• Operates From Single 3.3-V Supply
• Available in 8-Pin SOIC Package
The CDCVF2505 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. It uses a PLL to
precisely align, in both frequency and phase, the output clocks (1Y[0–3] and CLKOUT) to the input clock signal
(CLKIN). The CDCVF2505 operates at 3.3 V. It also provides integrated series-damping resistors that make it
ideal for driving point-to-point loads.
One bank of five outputs provides low-skew, low-jitter copies of CLKIN. Output duty cycles are adjusted to 50
percent, independent of duty cycle at CLKIN. The device automatically goes in power-down mode when no input
signal is applied to CLKIN.
Unlike many products containing PLLs, the CDCVF2505 does not require an external RC network. The loop filter
for the PLLs is included on-chip, minimizing component count, space, and cost.
Because it is based on the PLL circuitry, the CDCVF2505 requires a stabilization time to achieve phase lock of
the feedback signal to the reference signal. This stabilization is required following power up and application of a
fixed-frequency, fixed-phase signal at CLKIN, and following any changes to the PLL reference.
The CDCVF2505 is characterized for operation from –40°C to 85°C.
ORDERING INFORMATION(1)
TA
PACKAGE(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
–40°C to 85°C
SOIC – D
Reel of 2500
CDCVF2505IDRQ1
CKV05Q
(1)
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2)
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
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.
Copyright © 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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