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參數(shù)資料
| 型號(hào)： | W181-51G |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | Peak Reducing EMI Solution |
| 中文描述： | 75 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封裝： | 0.150 INCH, MS-012, SOIC-8 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 174K |
| 代理商： | W181-51G |
Peak Reducing EMI Solution
W181
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
July 21, 2000, rev. *B
Features
Cypress PREMIS
family offering
Generates an EMI optimized clocking signal at the out-
put
Selectable input to output frequency
Single 1.25% or 3.75% down or center spread output
Integrated loop filter components
Operates with a 3.3V or 5V supply
Low power CMOS design
Available in 8-pin SOIC (Small Outline Integrated Cir-
cuit) or 14-pin TSSOP (Thin Shrink Small Outline Pack-
age select options only)
Key Specifications
Supply Voltages: ...........................................V
DD
= 3.3V±5%
or V
DD
= 5V±10%
Frequency Range: ............................ 28 MHz
≤
F
in
≤
75 MHz
Crystal Reference Range.................. 28 MHz
≤
F
in
≤
40 MHz
Cycle to Cycle Jitter: ....................................... 300 ps (max.)
Selectable Spread Percentage: ....................1.25% or 3.75%
Output Duty Cycle: ............................... 40/60% (worst case)
Output Rise and Fall Time: ..................................5 ns (max.)
Table 1. Modulation Width Selection
SS%
W181-01, 02, 03
Output
W181-51, 52, 53
Output
0
F
in
≥
F
out
≥
F
in
–
1.25%
F
in
+ 0.625%
≥
F
in
≥
– 0.625%
1
F
in
≥
F
out
≥
F
in
–
3.75%
F
in
+ 1.875%
≥
F
in
≥
–1.875%
Table 2. Frequency Range Selection
W181 Option#
FS2
FS1
-01, 51
(MHz)
28
≤
F
IN
≤
38
38
≤
F
IN
≤
48
46
≤
F
IN
≤
60
58
≤
F
IN
≤
75
-02, 52
(MHz)
28
≤
F
IN
≤
38
38
≤
F
IN
≤
48
N/A
-03, 53
(MHz)
0
0
N/A
0
1
N/A
1
0
46
≤
F
IN
≤
60
58
≤
F
IN
≤
75
1
1
N/A
PREMIS is a trademark of Cypress Semiconductor Corporation.
Simplified Block Diagram
Pin Configurations
W
8
7
6
5
1
2
3
4
CLKIN or X1
NC or X2
GND
SS%
SSON#
FS1
VDD
CLKOUT
W
8
7
6
5
1
2
3
4
CLKIN or X1
NC or X2
GND
SS%
FS2
FS1
VDD
CLKOUT
SOIC
Spread Spectrum
Output
W181
(EMI suppressed)
3.3 or 5.0V
Oscillator or
Reference Input
Spread Spectrum
Output
W181
(EMI suppressed)
3.3 or 5.0V
XTAL
Input
X1
X2
40 MHz
Max.
W
8
1
2
3
4
5
6
7
CLKIN or X1
NC or X2
GND
NC
SS%
NC
NC
NC
FS1
NC
VDD
NC
CLKOUT
9
10
11
12
13
14
FS2
TSSOP
W
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W181-51GT | 制造商:Cypress Semiconductor 功能描述:PLL Frequency Synthesizer Single 8-Pin SOIC T/R |
| W181-51SZ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| W181-52G | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Peak Reducing EMI Solution |
| W181-52GT | 制造商:Cypress Semiconductor 功能描述: |
| W181-53G | 制造商:Cypress Semiconductor 功能描述:PLL Frequency Synthesizer Single 8-Pin SOIC |
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