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參數(shù)資料
| 型號： | TDA8741H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | Satellite sound circuit with noise reduction |
| 中文描述： | FM, AUDIO DEMODULATOR, PQFP44 |
| 封裝： | 10 X 10 X 1.75 MM, PLASTIC, QFP-44 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 436K |
| 代理商： | TDA8741H |
October 1994
10
Philips Semiconductors
Product specification
Satellite sound circuit with noise reduction
TDA8741; TDA8741H
AC CHARACTERISTICS
All voltages referenced to ground at pins 9 and 34 (4 and 30). Measured in test circuit Fig.4; V
P
= 12 V; T
amb
= 25
°
C;
f
MOD
= 1 kHz; f
OM
= 6.5 MHz;
f
M
= 46 kHz;
f
S1
=
f
S2
= 27 kHz (reference levels); f
OS1
= 10.7 MHz;
f
OS2
= 10.52 MHz; HF level at pin 18 (14): 40 mV (RMS); HF level at pins 8 and 16 (3 and 11): 20 mV (RMS);
MCS = logic 0 [V
7
(V
2
) = 0 V]; SCD = logic 0 [V
11
(V
6
) = 0 V]; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Main channel - HF input pin 18 (14) and limiter
V
IN3(rms)
V
IN3(rms)
R
IN3
input sensitivity (RMS value)
input signal level (RMS value)
input resistance
S/N(A) = 40 dB
1.0
15
2.0
200
mV
mV
k
Main channel - PLL FM demodulator and DC decoupling amplifier
f
CCO
free-running frequency
5.5
10.0
1.24
6.5
10.7
1.5
7.5
11.5
1.7
MHz
MHz
MHz
MHz
k
MCS = logic 1
note 1
MCS = logic 1; note 1
f
OM
lock range of PLL
R
CDM
output resistance for 50
μ
s
de-emphasis pin 20 (16)
output voltage pin 20 (16)
spread of PLL output voltage
over lock range pin 20 (16)
input resistance of output
amplifier pin 21 (17)
V
CDM
V
CDM
18.5
16.0
14.5 dBV
±
1
dB
R
CCM
95
150
200
k
Main channel - overall performance (output selector in position 4)
V
OM,OR,OL
output voltage pins 23, 24 and
25 (19, 20 and 21)
total harmonic distortion
signal-to-noise ratio
all PLLs locked
9
6
4
dBV
THD
S/N(A)
all PLLs locked
A-weighted;
all PLLs locked
no de-emphasis
connected
62
0.1
70
0.5
%
dB
15 kHz frequency response
with respect to 1 kHz pin 23 (19)
0.5
0
+0.5
dB
R
OM,OR,OL
output resistance pins 23, 24
and 25 (19, 20 and 21)
crosstalk attenuation from
secondary channels to main
mute attenuation
92
125
150
α
S/M
note 2
74
dB
MUTE
att
output selector in
position 7
V
RR
= 100 mV; f
i
= 70 Hz
74
dB
SVRR
supply voltage ripple rejection
35
dB
Secondary channels 1 and 2 - HF inputs pins 8 and 16 (3 and 11) and limiters
V
IN1,IN2(rms)
V
i(rms)
R
IN1,IN2
input sensitivity (RMS value)
input signal level (RMS value)
input resistance
S/N(A) = 40 dB
280
0.8
330
1.5
200
380
mV
mV
V
OM 1 kHz
)
)
V
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