- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371606 > 52AMI02L Spread Spectrum Clock Generator PDF資料下載
參數(shù)資料
| 型號： | 52AMI02L |
| 英文描述： | Spread Spectrum Clock Generator |
| 中文描述： | 擴頻時鐘發(fā)生器 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 118K |
| 代理商： | 52AMI02L |
Spread Spectrum Clock Generator
MDS 7152A A
3
Revision 102005
Integrated Circuit Systems, Inc.
●
525 Race Street, San Jose, CA 95126
●
tel (408) 297-1201
●
www.icst.com
ICS7152A
External Components
The ICS7152A requires a minimum number of external
components for proper operation.
Decoupling Capacitor
A decoupling capacitor of 0.01μF must be connected
between GND and VDD on pins 3 and 6, as close to
these pins as possible. For optimum device
performance, the decoupling capacitor should be
mounted on the component side of the PCB. Avoid the
use of vias in the decoupling circuit.
Series Termination Resistor
Series termination should be used on the clock output.
To series terminate a 50
trace (a commonly used
trace impedance) place a 27
resistor in series with
the clock line, as close to the clock output pin as
possible. The nominal impedance of the clock output is
25
.
PCB Layout Recommendations
For optimum device performance and lowest output
phase noise, the following guidelines should be
observed.
1) The 0.01μF decoupling capacitor should be mounted
on the component side of the board as close to the
VDD pin as possible. No vias should be used between
the decoupling capacitor and VDD pin. The PCB trace
to VDD pin should be kept as short as possible, as
should the PCB trace to the ground via.
2) To minimize EMI, the 27
series termination resistor
(if needed) should be placed close to the clock output.
3) An optimum layout is one with all components on the
same side of the board, minimizing vias through other
signal layers. Other signal traces should be routed
away from the ICS7152A. This includes signal traces
just underneath the device, or on layers adjacent to the
ground plane layer used by the device.
Crystal Information
The crystal used should be a fundamental mode,
parallel resonant. Crystal capacitors should be
connected from pins X1 to ground and X2 to ground to
optimize the initial accuracy. The value of these
capacitors is given by the following equation:
Crystal caps (pF) = (C
L
- 6) x 2
In the equation, C
L
is the crystal load capacitance. So,
for a crystal with a 16 pF load capacitance, two 20 pF
[(16-6) x 2] capacitors should be used.
Spread Spectrum Profile
The ICS7152A low EMI clock generator uses a
triangular frequency modulation profile for optimal
down stream tracking of zero delay buffers and other
PLL devices. The frequency modulation amplitude is
constant with variations of the input frequency.
Time
F
Modulation Rate
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 52AMI11L | Spread Spectrum Clock Generator |
| 52F2278 | Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits |
| 52F7504 | AC STROMZANGE |
| 52F7508 | Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits |
| 52F7511 | MINI STROMZANGE TRUE RMS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 52AMI11L | 制造商:ICS 制造商全稱:ICS 功能描述:Spread Spectrum Clock Generator |
| 52A-N5-40WH | 制造商:Edwards Signaling & Security Systems 功能描述:6"X 8 1/2" ADAPTABEACON ROTATING BEACON, AMBER, 120V AC 制造商:Edwards Signaling & Security Systems 功能描述:BEACON LIGHT ROTATING 350mA AMBER 制造商:Edwards Signaling & Security Systems 功能描述:BEACON LIGHT ROTATING, 350mA, AMBER 制造商:Edwards Signaling & Security Systems 功能描述:BEACON LIGHT ROTATING, 350mA, AMBER, IP / NEMA Rating:-, Bulb Diameter:152mm, Current Rating:350mA, Leaded Process Compatible:No, Length:216mm, Light Source:Halogen, Peak Reflow Compatible (260 C):No , RoHS Compliant: No |
| 52ASA | 制造商:Apex Tool Group 功能描述:TWEEZER,STRAIGHT ROUND TIP 制造商:Cooper Tools / Weller 功能描述:Bulk 制造商:Cooper Hand Tools / Erem 功能描述:TWEEZER 120MM 制造商:EREM 功能描述:TWEEZER, 120MM 制造商:EREM 功能描述:TWEEZER, 120MM; Tweezer Type:Flat Round; Overall Length:4.724"; Tweezer Body Material:Stainless Steel; Tweezer Tip Material:Stainless Steel ;RoHS Compliant: NA |
| 52AU39814800MHZ | 制造商:MILITARY SPECIFICATIONS P 功能描述: |
| 52AU40629630MHZ | 制造商:MILITARY SPECIFICATIONS P 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。