參數(shù)資料
型號(hào)： 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(yè)數(shù)： 48/56頁(yè)
文件大小： 254K
代理商： TDA9874H
1998 Apr 27
48
Philips Semiconductors
Preliminary specification
Digital TV sound demodulator/decoder
TDA9874H
Analog audio outputs
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 2
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
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 + 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” quasi peak; from
external/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
VCXO and clock generation
VCXO
Crystal input
C
i
V
bias(DC)
Crystal output
input capacitance
DC bias voltage
3.5
3.63
10
3.7
pF
V
R
i
= 100 k
V
osc(p-p)
oscillation amplitude
(peak-to-peak value)
DC bias voltage
mutual conductance at
24.576 MHz
1.4
V
V
bias(DC)
G
m
2.3
16.6
2.53
17.6
2.8
18.8
V
mS
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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參數(shù)描述
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