參數(shù)資料
型號(hào)： TDA8741
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, PDIP42
封裝： 0.600 INCH, PLASTIC, SDIP-42
文件頁數(shù)： 12/24頁
文件大?。?/td> 436K
代理商： TDA8741
October 1994
12
Philips Semiconductors
Product specification
Satellite sound circuit with noise reduction
TDA8741; TDA8741H
Secondary channels - noise reduction pins 25 and 24 (21 and 20);
note 4
V
OL,OR
output voltage at 0 dB noise
reduction input level
f
S1
=
f
S2
= 50 kHz;
no fixed de-emphasis
connected
f
S1
=
f
S2
= 50 kHz;
no fixed de-emphasis
connected
f
S1
=
f
S2
= 5 kHz;
no fixed de-emphasis
connected
f
S1
=
f
S2
= 5 kHz;
no fixed de-emphasis
connected
1
+1
+3
dBV
15 kHz frequency response
with respect to 1 kHz at 0 dB
noise reduction input level
output voltage at
20 dB noise
reduction input level
2
0
+2
dB
V
OL, OR
29
26
23
dBV
15 kHz frequency response
with respect to 1 kHz at
20 dB
noise reduction input level
13
11.5
10
dB
External inputs - pin 28 (24) (left) and pin 27 (23) (right) - overall performance (output selector in position 5)
V
EXTR,EXTL
R
i
V
OL,OR
THD
input signal level
input resistance
output level
total harmonic distortion
95
6.5
150
6.0
6
200
5.5
0.1
dBV
k
dBV
%
V
EXTR, EXTL
=
6 dBV
V
EXTR, EXTL
=
6 dBV;
f
i
= 1 kHz
A-weighted;
V
EXTR, EXTL
=
6 dBV
f
i
= 1 kHz
S/N(A)
signal-to-noise ratio
80
dB
α
L/R
,
α
R/L
crosstalk
80
dB
Secondary channels PLLs disable [SCD pin 11 (6)]; pin 11 (6) left open-circuit = logic HIGH
V
IL
V
IH
R
i
LOW level input voltage
HIGH level input voltage
input resistance
0
3.5
65
100
1.2
9
130
V
V
k
connected to V
P
Output selector control circuit (see also Table
1
) and main channel PLL lock-in select [MCS pin 7 (2)]; pins 15,
17, 26, 13 and 7 (10, 13, 22, 8 and 2) MOS inputs and should not be left open-circuit
V
IL
V
IM
LOW level input voltage limits
MID level input voltage limits for
MCS pin only
MID level input voltage on MCS
pin if MCS pin is floating
HIGH level input voltage limits
low input resistance MCS pin to
ground
high input resistance MCS pin to
V
P
LOW level input current
(not MCS pin)
HIGH level input current
(not MCS pin)
0
1.8
1.2
2.8
V
V
V
IMF
V
P
must be 1.8 to 13.2 V
17
19
21
%V
P
V
IH
R
IL
3.5
12
19
V
P
26
V
k
R
IH
52
80
108
k
I
IL
V
IL
= 0 V
<
1
μ
A
I
IH
V
IH
= 5 V
<
1
μ
A
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
V
OL OR 1 kHz
)
)
---------------------------------------
V
V
OL OR 1 kHz
)
)
---------------------------------------
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