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参数资料
| 型号： | SM561BZ |
| 厂商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 166 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 8/10页 |
| 文件大小： | 75K |
| 代理商： | SM561BZ |
Spread Spectrum Clock Generator
CYPRESS SEMICONDUCTOR CORPORATION 525 Los Coches St.
Document#: 38-07021 Rev. **
05/04/2001
MILPITAS, CA 95035 TEL: 408-263-6300, FAX 408-263-6571
Page 7 of 10
http://www.cypress.com
APPROVED PRODUCT
SM561
Modulation Rate
Spectrum Spread Clock Generators utilize frequency modulation (FM) to distribute energy over a specific band of
frequencies. The maximum frequency of the clock (Fmax) and minimum frequency of the clock (Fmin) determine
this band of frequencies. The time required to transition from Fmin to Fmax and back to Fmin is the period of the
Modulation Rate, Tmr. Modulation Rates of SSCG clocks are most commonly referred to in terms of frequency or
Fmod = 1/Tmod.
The input clock frequency, Fin, and the internal divider count, Cdiv, determine the Modulation Rate. In some
SSCG clock generators, the selected range determines the internal divider count. In other SSCG clocks, the
internal divider count is fixed over the operating range of the part. The SM560 and SM561 have a fixed divider
count, as listed below;
Device
Cdiv
SM560
1166
(All Ranges)
SM561
2332
(All Ranges)
Example:
Device
= SM560
Fin
= 65 MHz
Range
= S1 = 1, S0 = 0
Then;
Modulation Rate = Fmod = 65 MHz/2332 = 27.9 kHz.
Modulation Profile
Spectrum Analyzer
Figure 3. SSCG Clock, SM561, Fin = 65 MHz
SM561 Application Schematic
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SM561C107KAN360 | 制造商:AVX Corporation 功能描述:- Bulk |
| SM561K | 制造商:CDE 制造商全称:Cornell Dubilier Electronics 功能描述:Ceramic Capacitors |
| SM562-1 | 功能描述:变压器音频和信号 Line Transformer RoHS:否 制造商:Skyworks Solutions, Inc. 频率范围:810 MHz to 960 MHz 初级线圈阻抗: 次级线圈阻抗: 绝缘电压:23 dB 工作温度范围:- 40 C to + 85 C 端接类型:SMD/SMT 尺寸:6 mm L x 4.9 mm W x 1.6 mm H 产品:Splitters and Combiners |
| SM562-1EL | 制造商:BOURNS 制造商全称:Bourns Electronic Solutions 功能描述:ADSL Line Transformers |
| SM562-1L | 功能描述:变压器音频和信号 Magnetics RoHS:否 制造商:Skyworks Solutions, Inc. 频率范围:810 MHz to 960 MHz 初级线圈阻抗: 次级线圈阻抗: 绝缘电压:23 dB 工作温度范围:- 40 C to + 85 C 端接类型:SMD/SMT 尺寸:6 mm L x 4.9 mm W x 1.6 mm H 产品:Splitters and Combiners |
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