參數(shù)資料
型號(hào)： MC44BS373CAFCEVK
廠商： Freescale Semiconductor
文件頁(yè)數(shù)： 27/52頁(yè)
文件大?。?/td> 0K
描述： KIT EVAL FOR BS373CAFC 16PIN
標(biāo)準(zhǔn)包裝： 1
主要目的： 音頻視頻集成調(diào)制器
已用 IC / 零件： MC44BS373CA
MC44BS373CA Data Sheet
Application Diagrams
18.2 BiCMOS Modulator SO16NB Stereo Application
Figure 16. Proposed SO16 Package (Stereo Application Schematic)
Notes:
4. Cx value depends on crystal characteristics; Cx = 27 pF on Motorola application board.
5. RF PLL loop filter components at pin 14 must be as close as possible to FCC at pin 15.
6. Supply voltage decoupling capacitors must be as close as possible to ground.
7. For a stereo application, the audio signal is already encoded in the baseband stereo encoder. It is not necessary to
create a pre-emphasis and in this case the pre-emphasis capacitor has to be removed. Sometimes for the same
application it is useful to increase the FM deviation. To increase FM deviation, replace the original pre-emphasis
capacitor with a 100-nF capacitor. Adding this kind of value boosts the deviation and does not create a pre-emphasis.
8. It is possible to create a peak for the low frequencies (from 30 to 80 Hz) by adjusting the resistor of the sound loop
filter. A flat response is given with a value of 5.6 K
but this value can be set to 4.7 K. This gives a peak of about
1 dB at 40 Hz and extends the low-frequency cut-off at 28 Hz. The value of the audio input series capacitor has been
increased in order to have a lower cut-off frequency.
9. The value of the audio input series capacitor has been increased in order to have a lower cutoff frequency.
TVOUT
O
2.2k
22nF
1nF
10nF
47nF
Vcc
O
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SCL
SDA
4MHz
Vcc
Pre-em
O
GNDD
VCCD
PLLFLT
GND
VIDEO
TVOVCC
SPLLFLT
SDA
SCL
LOP
TVOUT
VCCA
Audio
O
Video
LOP
O
10nF
100nF
1 uF
220nF
Cx
100nF
Note 7
75
XTAL
GND
PREEM
AUDIO
10nF
O
Note 4
3K9 to 6K2
Note 5
Note 8
Note 9
Note 6
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC44BS373CAFCR2 功能描述:IC MODULATOR AUD/VID U/V 20-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> 專用 IC 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類(lèi)型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝
MC44BS373CAR2 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator
MC44BS373CR2 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator
MC44BS374 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MC44BS374
MC44BS374CA 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:SO16NB Package
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