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Integrated Circuit Systems - QuadraClock Quadrature Delay Buffer

Numéro de référence ICS672-01
Description QuadraClock Quadrature Delay Buffer
Fabricant Integrated Circuit Systems 
Logo Integrated Circuit Systems 





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ICS672-01 fiche technique
ICS672-01/02
QuadraClock™ Quadrature Delay Buffer
Description
The ICS672-01 and ICS672-02 are zero delay
buffers that generate four output clocks whose
phases are spaced at 90° intervals. Based on ICS’
proprietary low jitter Phase Locked Loop (PLL)
techniques, each device provides five low skew
outputs, with clock rates up to 84 MHz for the
ICS672-01 and up to 135 MHz for the
ICS672-02. By providing outputs delayed one
quarter clock cycle, the device is useful for systems
wwwr.DeqautaiSrhineget4eUa.rclyomor late clocks.
The ICS672-01/02 include multiplier selections of
x0.5, x1, x2, x3, x4, x5, or x6. They also offer a
mode to power down all internal circuitry and tri
state the outputs. In normal operation, output
clock FBCLK is tied to the FBIN pin.
ICS manufactures the largest variety of clock
generators and buffers, and is the largest clock
supplier in the world.
Block Diagram
Features
• Packaged in 16 pin narrow SOIC
• Input clock range from 10 MHz to 150 MHz
• Clock outputs from up to 84 MHz (ICS672-01)
and up to 135 MHz (ICS672-02)
• Zero input-output delay
• Integrated x0.5, x1, x2, x3, x4, x5, or x6 selections
• Four accurate (<250 ps) outputs with 0°, 90°,
180°, and 270° phase shift from ICLK, and one
FBCLK (0°)
• Separate supply for output clocks from 2.5V to 5V
• Full CMOS outputs (TTL compatible)
• Tri state mode for board-level testing
• Includes Power Down for power savings
• Advanced, low power, sub-micron CMOS process
• 3.3 V to 5 V operating voltage
• Industrial temperature version available
VDD GND
23
VDDIO
IN
FBIN
PLL
Multiplier
and
Quadrature
Generation
CLK0
CLK90
CLK180
CLK270
CLKFB
S2:S0
3 Control
Logic Power Down + Tri-State
External Feedback
MDS 672-01/02 C
1 Revision 112200
Integrated Circuit Systems, Inc.• 525 Race Street • San Jose •CA•95126• (408) 295-9800 tel • www.icst.com

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