概览

The 290 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 290 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 290 is also available in factory programmed custom versions for high-volume applications.

290 - Block Diagram
290 - Pinout
290 - Block Diagram
290 - Pinout
  • 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

文档

设计和开发

软件下载
类型 文档标题 日期
软件和工具 - 软件
VersaClock II Desktop Software Setup
登录后下载 ZIP 6.24 MB
1 item

ECAD 模块

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

扩展 ECAD 模块
Diagram of ECAD Models

产品选择

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    购买 / 样片
    器件号
    290PGILF
    circle过时
    memory
    view_in_ar
    		TSSOP 20 I Yes Tube
    290PGILFT
    circle过时
    memory
    view_in_ar
    		TSSOP 20 I Yes Reel
    290PGLF
    circle过时
    memory
    view_in_ar
    		TSSOP 20 C Yes Tube
    290PGLFT
    circle过时
    memory
    view_in_ar
    		TSSOP 20 C Yes Reel
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