参数资料
型号: ICS290PGLFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 1/9页
文件大小: 0K
描述: IC CLK SYNTH TRPL PLL 20-TSSOP
标准包装: 2,500
系列: VersaClock™
类型: 时钟/频率合成器
PLL: 带旁路
输入: 时钟,晶体
输出: CMOS
电路数: 1
比率 - 输入:输出: 1:8
差分 - 输入:输出: 无/无
频率 - 最大: 200MHz
除法器/乘法器: 是/是
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 带卷 (TR)
其它名称: 290PGLFT
DATASHEET
TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER
ICS290
IDT TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER
1
ICS290
REV H 030212
Description
The ICS290 field programmable spread spectrum clock
synthesizer generates up to eight high-quality,
high-frequency clock outputs including multiple reference
clocks from a low-frequency crystal input. It is designed to
replace crystals, crystal oscillators and stand alone spread
spectrum devices in most electronic systems.
Using IDT’s VersaClockTM software to configure PLLs and
outputs, the ICS290 contains a One-Time Programmable
(OTP) ROM for field programmability. Programming
features include input/output frequencies, spread spectrum
amount, eight selectable configuration registers and up to
two sets of four low-skew outputs.
Using Phase-Locked Loop (PLL) techniques, the device
runs from a standard fundamental mode, inexpensive
crystal, or clock. It can replace multiple crystals and
oscillators, saving board space and cost.
The ICS290 is also available in factory programmed custom
versions for high-volume applications.
Features
Packaged as 20-pin TSSOP – Pb-free, RoHS compliant
Eight addressable registers
Replaces multiple crystals and oscillators
Output frequencies up to 200 MHz at 3.3 V
Configurable Spread Spectrum Modulation
Input crystal frequency of 5 to 27 MHz
Clock input frequency of 3 to 166 MHz
Up to eight reference outputs
Up to two sets of four low-skew outputs
Operating voltages of 3.3 V
Controllable output drive levels
Advanced, low-power CMOS process
Block Diagram
Crystal
Oscillator
GND
3
VDD
PDTS
PLL2
PLL3
Divide
Logic
and
Output
Enable
Control
S2:S0
CLK1
CLK8
CLK7
CLK6
CLK5
CLK4
CLK3
CLK2
3
OTP
ROM
with PLL
Values
X2
Crystal or
Clock Input
External capacitors
are required with a crystal input.
X1/ICLK
PLL1 with
Spread
Spectrum
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