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参数资料
| 型号： | SM560BZ |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | PROC SPECIFIC CLOCK GENERATOR, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 1/2页 |
| 文件大小： | 19K |
| 代理商： | SM560BZ |
SM560
Spread Spectrum Clock Generator
Approved Product
International Microcircuits, Inc. 525 Los Coches St.
Rev. 2.1
11/7/2000
Milpitas, CA 95035 Tel: 408-263-6300, Fax 408-263-6571
Page 1 of 9
http://www.imicorp.com
Features
27 to 108 MHz Operating Frequency Range
Wide (9) Range of Spread Selections
Accepts Clock and Crystal Inputs
Low Power Dissipation
3.3V = 85 mw. (50 MHz)
Frequency Spread Disable Function
Center Spread Modulation
Low Cycle-to Cycle Jitter
8-pin SOIC package
Applications
VGA Controllers
LCD Panels and Monitors
Printers and Multi-Function devices (MFP).
Benefits
Peak EMI reduction by 8 to 16dB
Fast Time to Market
Cost Reduction
General Description
The IMI SM560 is a Spread Spectrum Clock Generator (SSCG) IC used for the purpose of reducing Electro
Magnetic Interference (EMI) found in today’s high-speed digital electronic systems.
The SM560 uses an IMI proprietary Phase-Locked Loop (PLL) and Spread Spectrum Clock (SSC) technology to
synthesize and frequency modulate the input frequency of the reference clock. By frequency modulating the clock,
the measured EMI at the fundamental and harmonic frequencies of Clock (SSCLK1) is greatly reduced.
This reduction in radiated energy can significantly reduce the cost of complying with regulatory requirements and
time to market without degrading the system performance.
The SM560 is a very simple and versatile device to use. The frequency and spread % range is selected by
programming S0 and S1digital inputs. These inputs use three (3) logic states including High (H), Low (L) and
Middle (M) logic levels to select one of the 9 available Frequency Modulation and Spread % ranges. Refer to
Tables 2 and 3 for programming details.
The SM560 is optimized for SVGA (40 MHz) and XVGA (65MHz) Controller clocks and also suitable for the
applications with the frequency range of 27 to 108 MHz.
A wide range of digitally selectable spread percentages is made possible by using Three-Level (High, Low and
Middle) logic at the S0 and S1 digital control inputs.
The output spread (frequency modulation) is symmetrically centered on the input frequency.
Spread Spectrum Clock Control (SSCC) function enables or disables the frequency spread and is provided for easy
comparison of system performance during EMI testing.
The SM560 is available in an 8-pin SOIC package with a 0 to 70
°C operating temperature range.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SM560C | 制造商:UNIOHM 制造商全称:UNIOHM 功能描述:5.0 AMP SURFACE MOUNT SCHOTTKY BARRIER RECTIFIERS |
| SM560DS | 制造商:SECOS 制造商全称:SeCoS Halbleitertechnologie GmbH 功能描述:5.0AMP Surface Mount Schottky Barrier Rectifiers |
| SM561 | 制造商:CYPRESS 制造商全称:Cypress Semiconductor 功能描述:Spread Spectrum Clock Generator |
| SM5610 | 制造商:NPC 制造商全称:Nippon Precision Circuits Inc 功能描述:IC for Quartz Crystal Oscillating Module |
| SM5611 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:OEM PRESSURE TRANSDUCER FULLY TEMPERATURE COMPENSATED AND CALIBRATED DUAL-IN-LINE PACKAGE |
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