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參數(shù)資料
| 型號： | SAA5565PS |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Enhanced TV microcontrollers with On-Screen Display (OSD)(帶全屏顯示的增強型TV控制器) |
| 中文描述： | 與微控制器在強化電視屏幕顯示（OSD）（帶全屏顯示的增強型電視控制器） |
| 文件頁數(shù)： | 92/100頁 |
| 文件大小： | 371K |
| 代理商： | SAA5565PS |
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2000 Feb 23
92
Philips Semiconductors
Preliminary specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA55xx
25 EMC GUIDELINES
Optimization of circuit return paths and minimisation of
common mode emission will be assisted by using a double
sided printed-circuit board (PCB) with low inductance
ground plane.
On a single sided PCB local ground plane under the
whole IC should be present as shown in Fig.41. This
should be connected by the widest possible connection
back to the PCB ground connection, and bulk electrolytic
decoupling capacitor. It should preferably not connect to
other grounds on the way and no wire links should be
present in this connect. The use of wire links increases
ground bounce by introducing inductance into the ground.
The supply pins can be decoupled at the pin to the ground
plane under the IC. This is easily accomplished using
surface mount capacitors, which are more effective than
leaded components at high frequency.
Using a device socket will unfortunately add to the area
and inductance of the external bypass loop.
A ferrite bead or inductor with resistive characteristics at
high frequencies may be utilised in the supply line close to
the decoupling capacitor to provide a high-impedance.
To prevent pollution by conduction onto the signal lines
(which may then radiate) signals connected to the V
DD
supply via a pull-up resistor should not be connected to the
IC side of this ferrite component.
OSCGND should be connected only to the crystal load
capacitors and not the local or circuit GND.
Physical connection distances to associated active
devices should be short.
Output traces should be routed with close proximity to
mutually coupled ground return paths.
Fig.41 Power supply connections for EMC.
handbook, full pagewidth
electrolytic decoupling capacitor (2
μ
F)
ferrite beads
SM decoupling capacitors (10 to 100 nF)
under-IC GND plane
IC
MBK979
VSSC
VSSA
V
V
V
V
GND
+
3.3 V
other
GND
connections
under-IC GND plane
GND connection
note: no wire links
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| SAA5561 | Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5562 | Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5562PS | Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5563 | Enhanced TV microcontrollers with On-Screen Display OSD |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SAA55XX | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:TV microcontrollers with Closed Captioning (CC) and On-Screen Display (OSD) |
| SAA5603 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| SAA5645 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5645HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display OSD |
| SAA5647 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display OSD |
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