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參數(shù)資料
| 型號： | TDA8740H |
| 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)： | 12/24頁 |
| 文件大小： | 325K |
| 代理商： | TDA8740H |
October 1994
12
Philips Semiconductors
Product specification
Satellite sound circuit with noise reduction
TDA8740; TDA8740H
Secondary channels - low-pass filter pins 38 and 30 (34 and 26)
50 kHz frequency response
with respect to 1 kHz
note 7
25
16
9
dB
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
input signal level
input resistance
output level pins 25 and 24 (21
and 20)
total harmonic distortion
95
6.5
150
6.0
6
200
5.5
dBV
k
dBV
V
EXTR, EXTL
=
6 dBV
THD
V
EXTR, EXTL
=
6 dBV;
f
i
= 1 kHz
A-weighted;
V
EXTR, EXTL
=
6 dBV
f
i
= 1 kHz
0.1
%
S/N(A)
signal-to-noise ratio
80
dB
α
L/R
,
α
R/L
crosstalk
80
dB
Input selector control circuit pins 3 and 5 (41 and 43) (see also Table
1
) and secondary channels PLLs disable
[SCD pin 11 (6)]; pins 3, 5 and 11 (41, 43 and 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
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
V
RECTL RECTR 1 kHz
)
)
----------------------------------------------------------
V
V
OL OR 1 kHz
)
)
---------------------------------------
V
V
OL OR 1 kHz
)
)
---------------------------------------
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| TDA8740NB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Sound Circuit |
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| TDA8741H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Satellite sound circuit with noise reduction |
| TDA8741HB-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Sound Circuit |
| TDA8741NB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Sound Circuit |
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