參數(shù)資料
型號: TDA9874H
廠商: NXP SEMICONDUCTORS
元件分類: 接收器
英文描述: Digital TV sound demodulator/decoder
中文描述: AM/FM, AUDIO DEMODULATOR, PQFP44
封裝: 14 X 14 MM, 2.20 MM HEIGHT, PLASTIC, SOT-205-1, QFP-44
文件頁數(shù): 47/56頁
文件大?。?/td> 254K
代理商: TDA9874H
1998 Apr 27
47
Philips Semiconductors
Preliminary specification
Digital TV sound demodulator/decoder
TDA9874H
B
(
3dB)
3 dB bandwidth
from FM source to any output
from NICAM source to any
output
from FM/NICAM to any output;
reference 1 kHz
note 6
note 7
AM: 1 kHz, 30% modulation;
reference: 1 kHz, 50 kHz
deviation
SIF level 100 mV (RMS); 54%
AM; 1 kHz AF; “CCIR468”
quasi peak
14.5
14.5
15
15
kHz
kHz
f
resp
frequency response
20 Hz to 14 kHz
dual signal channel separation
stereo channel separation
AM suppression for FM
2
+1
dB
α
cd(dual)
α
cs(stereo)
α
AM
65
40
50
70
45
dB
dB
dB
dm
AM
AM demodulation
36
dB
I
DENTIFICATION FOR
FM
SYSTEMS
m
pilot(ident)
C/N
pilot(ident)
pilot modulation for identification
pilot sideband C/N for
identification start
25
50
32
75
%
hys
(tun)
f
ident
hysteresis
identification window
2
dB
B/G stereo
slow mode
medium mode
fast mode
B/G dual
slow mode
medium mode
fast mode
slow mode
medium mode
fast mode
slow mode
medium mode
fast mode
116.85
116.11
114.65
118.12 Hz
118.89 Hz
120.46 Hz
273.44
272.07
270.73
274.81 Hz
276.20 Hz
277.60 Hz
2
1
0.5
2
1
0.5
t
on(ident)
total identification time on
s
s
s
s
s
s
t
off(ident)
total identification time off
Mono and external inputs
V
i(nom)(rms)
nominal level input voltage
(RMS value)
clipping level input voltage
(RMS value)
input resistance
note 2
500
mV
V
i(cl)(rms)
THD < 3%; note 3
1250
1400
mV
R
i
note 3
28
35
42
k
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Hz
dB
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