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參數資料
型號： 935263704518
廠商： NXP SEMICONDUCTORS
元件分類： 接收器
英文描述： AM/FM, AUDIO DEMODULATOR, PQFP44
封裝： PLASTIC, QFP-44
文件頁數： 54/71頁
文件大小： 304K
代理商： 935263704518
2000
Aug
04
58
Philips
Semiconductors
Product
specication
Digital
TV
sound
demodulator/decoder
TD
A9874A
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Table 90 Level setting FM, AM and NICAM at 0 dB (full-scale) = 1.4 V (RMS)
Table 91 Level setting SAT FM at 0 dB (full-scale) = 1.4 V (RMS)
SOURCE
TRANSMITTER NOMINAL
MODULATION DEPTH
NOMINAL LEVEL AT
DEMODULATOR OUTPUT
LEVEL
ADJUSTMENT
SETTING
NOMINAL LEVEL
AT CROSSBAR
DAC GAIN
SETTING
NOMINAL OUTPUT
VOLTAGE VO
FM
M standard
15 kHz deviation
24 dB (full-scale)
+9 dB
15 dB (full-scale)
(spread of
±0.5 dB
due to different
transmitter
references)
+6 dB
500 mV (RMS)
FM
B/G, D/K, I
standard
27 kHz deviation
19 dB (full-scale)
+4 dB
AM
L/L accent
standard
54%
19 dB (full-scale)
+4 dB
NICAM
B/G, D/K,
L standard
11.2 dB (full-scale)
18 dB (full-scale)
+3 dB
NICAM
I standard
15.8 dB (full-scale)
23 dB (full-scale)
+8 dB
SOURCE
TRANSMITTER
MAXIMUM MODULATION
DEPTH
NOMINAL LEVEL AT
DEMODULATOR OUTPUT
LEVEL
ADJUSTMENT
SETTING
MAXIMUM LEVEL
AT CROSSBAR
DAC GAIN
SETTING
MAXIMUM OUTPUT
VOLTAGE VO
SAT FM
stereo
50 kHz deviation
13 dB (full-scale)
+4 dB
9 dB (full-scale)
+6 dB
1 V (RMS)
SAT FM
mono
85 kHz deviation
9 dB (full-scale)
0 dB
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相關代理商/技術參數
參數描述
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