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參數(shù)資料
| 型號(hào)： | PL611S-17-XXXUI |
| 廠商： | PhaseLink Corporation |
| 英文描述： | 1.8V-3.3V PicoPLLTM KHz to MHz Programmable Clock |
| 中文描述： | 1.8 - 3.3V的PicoPLLTM千赫到MHz可編程時(shí)鐘 |
| 文件頁(yè)數(shù)： | 4/9頁(yè) |
| 文件大?。?/td> | 234K |
| 代理商： | PL611S-17-XXXUI |
(Preliminary)
PL611s-17
1.8V-3.3V PicoPLL
TM
KHz to MHz Programmable Clock
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 01/04/07 Page 4
APPLICATION RECOMMENDATIONS FOR PL611s-17
PL611s-17 can accept a reference input >10kHz and produce a clock output in the MHz range, as shown in the
diagram ‘1’, below. Also, to save costs in consumer product system designs and for greater area optimization, it
is possible to use the XOUT of the RTC crystal (32.768KHz) as the reference input to the PL611s-17, as shown in
diagram ‘2’, below.
Diagram ‘1’ Diagram ‘2’
Note: An AC Coupling Cap may be required if RTC Clock amplitude is too small.
GUIDELINES FOR EXTERNAL COMPONENT SELECTION
For the optimum performance, an accurate external loop filter capacitor must be selected. A general guideline for
selecting this component based on the input frequency is shown in the table below.
Input Frequency
3MHz ~ 200MHz
300KHz ~ 10MHz
30KHz ~ 1.0MHz
10KHz ~ 100KHz
Capacitor Value
1.0nF
1.0nF
4.7nF
47nF
The optimal way to choose the value is using the following formula:
C(nF) = 0.8 + M/280
Where C = Loop Filter Capacitor value (in nF)
M = M counter value. Provided by PhaseLink with device samples.
Notes:
* Find the closest commercially available value. Values in the E12 range with 5% tolerance are acceptable.
* With possible M-counter values between 1 and 65536, the capacitor value is expected in the range 820pF thru
220nF.
32.768
KHz
C1
C2
ASIC
XIN
XOUT
XIN
XOUT
REFIN
MHZ CLK
(Any Frequency)
1.8~3.3V
LF
LFGND
OE, PDB
FSEL, CLK1
P
1
2
3
6
5
4
REFIN
MHZ CLK
(Any Frequency)
1.8~3.3V
LF
LFGND
OE, PDB
FSEL, CLK1
P
1
2
3
6
5
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PL611S-17-XXXUIR | 制造商:PLL 制造商全稱(chēng):PLL 功能描述:1.8V-3.3V PicoPLLTM KHz to MHz Programmable Clock |
| PL611S-18 | 制造商:PLL 制造商全稱(chēng):PLL 功能描述:0.5kHz-125MHz MHz to KHz Programmable ClockTM |
| PL611S-18-XXXGC | 制造商:PLL 制造商全稱(chēng):PLL 功能描述:0.5kHz-125MHz MHz to KHz Programmable ClockTM |
| PL611S-18-XXXGCR | 制造商:PLL 制造商全稱(chēng):PLL 功能描述:0.5kHz-125MHz MHz to KHz Programmable ClockTM |
| PL611S-18-XXXGC-R | 制造商:PLL 制造商全稱(chēng):PLL 功能描述:0.5kHz-125MHz MHz to KHz Programmable ClockTM |
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