參數(shù)資料
型號： TDA9874APS
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, PDIP42
封裝： 0.600 INCH, SHRINK, PLASTIC, MS-020, SOT-270-1, DIP-42
文件頁數(shù)： 21/68頁
文件大?。?/td> 231K
代理商： TDA9874APS
1999 Dec 03
21
Philips Semiconductors
Preliminary specification
Digital TV sound demodulator/decoder
TDA9874A
t
off(ident)
total identification time off
slow mode
medium mode
fast mode
2
1
0.5
s
s
s
Mono and external inputs
V
i(nom)(rms)
nominal level input voltage
(RMS value)
clipping level input voltage
(RMS value)
input resistance
note 1
500
mV
V
i(cl)(rms)
THD < 3%; note 5
1250
1400
mV
R
i
Analog audio outputs
note 5
28
35
42
k
V
o(clip)(rms)
clipping level output voltage
(RMS value)
output resistance
AC load resistor
DC load resistor
output load capacitor
static DC offset voltage
mute suppression
THD < 3%
1400
mV
R
o
R
L(AC)
R
L(DC)
C
o(L)
V
offset(DC)
α
mute
150
10
10
80
250
10
30
375
12
70
k
k
nF
mV
dB
nominal input signal from
any source; f
i
= 1 kHz;
note 1
from external and mono
source;
3 dB bandwidth
from any source
f
ripple
= 70 Hz;
V
ripple
= 100 mV (peak);
C
Vref
= 47
μ
F; signal from
I
2
S-bus
B
line
bandwidth
20
kHz
G
ro
PSRR
roll-off gain at 14.5 kHz
power supply ripple rejection
3
40
2
45
dB
dB
Audio performance
THD + N
total harmonic distortion plus
noise
V
in/out
= 1 V (RMS);
f
i
= 1 kHz; bandwidth
20 Hz to 20 kHz; from
external/mono input to
output copy
reference voltage
V
0
= 1.4 V (RMS);
f
i
= 1 kHz; “CCIR468-2”
quasi peak; from external or
mono input to output copy
between any analog input
pairs; f
i
= 1 kHz
between left and right of
external input pair
between left and right of
output pair
0.1
0.3
%
S/N
signal-to-noise ratio
78
90
dB
α
ct
crosstalk attenuation
70
dB
α
cs
channel separation
65
dB
60
dB
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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