參數(shù)資料
型號(hào): SAA5288
廠商: NXP Semiconductors N.V.
英文描述: TV Microcontroller with Full Screen On Screen Display (OSD)(帶全屏屏幕顯示的TV微控制器)
中文描述: 電視微控制器,帶有全屏幕顯示(OSD)(帶全屏屏幕顯示的電視微控制器屏)
文件頁(yè)數(shù): 44/48頁(yè)
文件大?。?/td> 508K
代理商: SAA5288
1997 Jun 24
44
Philips Semiconductors
Preliminary specification
TV microcontroller with full screen
On Screen Display (OSD)
SAA5288
14 EMC GUIDELINES
If possible, a ground plane under the whole IC should be
present, i.e. no signal tracks running underneath the IC as
shown in Fig.22.
The ground plane under the IC should be connected by the
widest possible connection back to the ground connection
of the PCB, and electrolytic decoupling capacitor. It should
preferably not connect to other grounds on the way and no
wire links should be present in this connection. The use of
wire links increases ground bounce by introducing
inductance into the ground, thereby reducing the
electrolytic capacitor’s decoupling efficiency.
The supply pins should be decoupled at the pin, to the
ground plane under the IC. This is easily accomplished
when using SM capacitors (which are also most effective
at high frequencies).
Each supply pin should be connected separately to the
power connection of the PCB, preferably via at least one
wire link which:
1.
May be replaced by a ferrite or inductor at a later point
if necessary
2.
Will introduce a small amount of inductance.
Signals connected to the +5 V supply e.g. via pull-up
resistors, should be connected to the +5 V supply before
the wire link to the IC (i.e. not the IC side). This will prevent
if from being polluted and conduct or radiate noise onto
signal lines, which may then radiate themselves.
OSCGND should connect only to the crystal load
capacitors (and not GND).
Fig.22 Power supply and GND connections for SOT247-1.
handbook, full pagewidth
electrolytic decoupling capacitor (2
μ
F)
wire links
SM decoupling capacitors (10 to 100 nF)
VDDA
under-IC GND plane
IC
MGL127
VSSD
VSSA
VDDM
VDDD
GND
+
5 V
other
GND
connections
under-IC GND plane
GND connection
note: no wire links
相關(guān)PDF資料
PDF描述
SAA5288PS TV microcontroller with full screen On Screen Display OSD
SAA5290 One page Economy Teletext/TV microcontroller
SAA5290A Economy teletext and TV microcontrollers
SAA5290PS Economy teletext and TV microcontrollers
SAA5290ZP One page Economy Teletext/TV microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA5288PS 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:TV microcontroller with full screen On Screen Display OSD
SAA5290 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers
SAA5290A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers
SAA5290PS 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers
SAA5290ZP 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:One page Economy Teletext/TV microcontroller