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參數(shù)資料
| 型號(hào)： | 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(shù)： | 51/71頁 |
| 文件大?。?/td> | 304K |
| 代理商： | 935263704518 |
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2000 Aug 04
55
Philips Semiconductors
Product specication
Digital TV sound demodulator/decoder
TDA9874A
S/N
signal-to-noise ratio
SC1 from FM source to any
output; Vo = 1 V (RMS);
“CCIR468-2”; quasi peak
64
70
dB
SC2 from FM source to any
output; Vo = 1 V (RMS);
“CCIR468-2”; quasi peak
60
66
dB
SC1 during use of high
deviation mode from
FM source to any output;
Vo = 1 V (RMS);
“CCIR468-2”; quasi peak
62
68
dB
NICAM source;
Vo = 1 V (RMS);
“CCIR468-2”; quasi peak
NICAM in accordance with
“EBU specication”; note 2
B3dB
3 dB bandwidth
from FM source to any
output
14.5
15
kHz
from NICAM source to any
output
14.5
15
kHz
fres
frequency response
20 Hz to 14 kHz
from FM/NICAM to any
output; reference 1 kHz
2
+1
dB
αcs(dual)
dual signal channel separation
note 3
65
70
dB
α
cs(stereo)
stereo channel separation
note 4
40
45
dB
α
AM
AM suppression for FM
AM: 1 kHz, 30% modulation;
reference: fi = 1 kHz; 50 kHz
deviation
50
dB
dmAM
AM demodulation
SIF level 100 mV (RMS);
54% AM; 1 kHz AF;
“CCIR468-2”; quasi peak
36
45
dB
IDENTIFICATION FOR FM SYSTEMS
modp
pilot modulation for identication
25
50
75
%
C/Np
pilot sideband carrier-to-noise
ratio for identication start
27
hys(tun)
hysteresis
2dB
fident
identication window
B/G stereo
slow mode
116.85
118.12
Hz
medium mode
116.11
118.89
Hz
fast mode
114.65
120.46
Hz
B/G dual
slow mode
273.44
274.81
Hz
medium mode
272.07
276.20
Hz
fast mode
270.73
277.60
Hz
tident(on)
total identication time on
slow mode
2s
medium mode
1s
fast mode
0.5
s
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
dB
Hz
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