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參數資料
| 型號： | CY25568 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Spread Spectrum Clock Generator(擴頻時鐘發生器) |
| 中文描述： | 擴頻時鐘發生器（擴頻時鐘發生器） |
| 文件頁數： | 1/12頁 |
| 文件大小： | 109K |
| 代理商： | CY25568 |
CY25568
Spread Spectrum Clock Generator
Cypress Semiconductor Corporation
http://www.cypress.com
Document#: 38-07111 Rev. *B
12/21/02
Page 1 of 12
Approved Product
FEATURES
3.3V = 52 mW-typ @ 6MHz
3.3V = 60 mW-typ @ 12MHz
3.3V = 72 mW-typ @ 24MHz
Power Down Mode
Low Cycle-to Cycle Jitter
8MHz = 195 ps-typ
16MHz = 175 ps-typ
32MHz = 100 ps-typ
Available in 16-pin (150 mil.) SOIC package
4 to 32 MHz Input Frequency Range
4 to 128 MHz Output Frequency Range
Accepts Clock, Crystal and Resonator Inputs
1x, 2x and 4x Frequency Multiplication
Non-modulated Reference Frequency Output
Center and Down Spread Modulation
Low Power Dissipation
APPLICATIONS
Printers and MFPs
LCD Panels and Monitors
Digital Copiers
PDAs
Automotive
CD-ROM, VCD and DVD
Networking, LAN/WAN
Scanners
Modems
Embedded Digital Systems
BENEFITS
Peak EMI reduction by 8 to 16dB
Fast Time to Market
Cost Reduction
GENERAL DESCRIPTION
The Cypress CY25568 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 CY25568 uses a Cypress proprietary Phase-Locked Loop (PLL) and Spread Spectrum Clock (SSC)
technology to synthesize and modulate the frequency of the digital clock. By frequency modulating the clock, the
measured EMI at the fundamental and harmonic frequencies is greatly reduced.
This reduction in radiated energy can significantly reduce the cost of complying with regulatory agency
requirements and improve time to market without degrading system performance.
The CY25568 input frequency range is 4 to 32 MHz and accepts clock, crystal and ceramic resonator inputs. The
output clocks can be programmed to produce 1x, 2x and 4x multiplication of the input frequency with Spread
Spectrum. A separate non-modulated reference clock is also provided.
The use of 2x or 4x frequency multiplication eliminates the need for higher order crystals and allows the user to
generate up to 128 MHz Spread Spectrum Clock (SSC) by using only first order crystals. This will reduce the cost
while improving the system clock accuracy, performance and complexity
Center Spread or Down Spread frequency modulation can be selected by the user based on 4 discrete values of
Spread % for each Spread Mode with the option of a Non-Spread mode for system test and verification purposes.
The CY25568 is available in a 16 pin SOIC (150-mil.) package with a commercial operating temperature range of
0 to 70
°
C. Contact Cypress for availability of -25 to +85
°
C Industrial Temperature Range Operation. Refer to
CY25811/12/14 products for 8-pin SOIC package versions of the CY25568.
相關PDF資料 |
PDF描述 |
|---|---|
| CY25701 | Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No-Spread Spectrum (XO) Option(帶擴頻(SSXO)和非擴頻(XO)選擇的可編程高頻晶體振蕩器) |
| CY25823 | D-Subminiature Connector; Gender:Female; No. of Contacts:68; D Sub Shell Size:DB68; Body Material:Zinc Alloy; Contact Material:Copper Alloy; Mounting Type:PCB Straight Thru Hole; Pitch Spacing:0.05"; Series:102; Lead Pitch:0.05" RoHS Compliant: Yes |
| CY25823ZXC | D-Subminiature Connector; Gender:Female; No. of Contacts:80; Contact Termination:IDC; D Sub Shell Size:DB80; Body Material:Steel; Leaded Process Compatible:Yes; Mounting Type:PC Board; Peak Reflow Compatible (260 C):No RoHS Compliant: Yes |
| CY25823ZXCT | CONN, RCPT, MINI-D RIBBON (F), 80-POS, PC MTG., AU |
| CY25901 | Spread Spectrum Clock Generator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CY25568SC | 制造商:Cypress Semiconductor 功能描述: |
| CY25568SCT | 制造商:Cypress Semiconductor 功能描述: |
| CY25568SXC | 功能描述:鎖相環 - PLL PLL CLK GENERATOR SINGLE 4-32MHz INPUT RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| CY25568SXCT | 功能描述:鎖相環 - PLL PLL CLK GENERATOR SINGLE 4-32MHz INPUT RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| CY25701 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Programmable High-Frequency Crystal Oscillator with Spread Spectrum (SSXO) |
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