参数资料
型号: ICS271PGLF
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟产生/分配
英文描述: 200 MHz, OTHER CLOCK GENERATOR, PDSO20
封装: 0.173 INCH, ROHS COMPLIANT, TSSOP-20
文件页数: 1/11页
文件大小: 234K
代理商: ICS271PGLF
DATASHEET
TRIPLE PLL FIELD PROGRAMMABLE VCXO CLOCK SYNTHESIZER
ICS271
IDT / ICS TRIPLE PLL FIELD PROGRAMMABLE VCXO CLOCK SYNTHESIZER 1
ICS271
REV C 061206
Description
The ICS271 field programmable VCXO clock synthesizer
generates up to six high-quality, high-frequency clock
outputs including multiple reference clocks from a
low-frequency crystal input. It is designed to replace
crystals and crystal oscillators in most electronic systems.
Using ICS’ VersaClockTM software to configure PLLs and
outputs, the ICS271 contains a One-Time Programmable
(OTP) ROM for field programmability. Programming
features include VCXO, eight selectable configuration
registers and up to two sets of three low-skew outputs.
Each of the two output groups are powered by a separate
VDDO voltage. VDDO may vary from 1.8 V to VDD.
Using Phase-Locked Loop (PLL) techniques, the device
runs from a standard fundamental mode, inexpensive
crystal, or clock. It can replace VCXOs, multiple crystals
and oscillators, saving board space and cost.
The ICS271 is also available in factory programmed custom
versions for high-volume applications.
Features
Packaged as 20-pin TSSOP
Eight addressable registers
Replaces multiple crystals and oscillators
Output frequencies up to 200 MHz at 3.3 V
Input crystal frequency of 5 to 27 MHz
Up to six reference outputs
Separate 1.8 to 3.3 V VDDO output level controls for
each bank of 3 outputs
Up to two sets of three low-skew outputs
Operating voltages of 3.3 V
Controllable output drive levels
Advanced, low-power CMOS process
Available in Pb (lead) free packaging
Block Diagram
Voltage
Controlled
Crystal
Oscillator
GND
2
3
VDD
PDTS
PLL2
PLL3
Divide
Logic
and
Output
Enable
Control
S2:S0
CLK1
CLK6
CLK5
CLK4
CLK3
CLK2
3
OTP
ROM
with
PLL
Values
X2
Crystal
External capacitors
are required.
X1
PLL1
VIN
VDDO1
VDDO2
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