tda8742 NXP Semiconductors, tda8742 Datasheet - Page 2

• Manufacturer Part Number: tda8742
• Description: Satellite Sound Circuit With Noise Reduction
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
October 1994
Supply
V
Main channel
V
V
S/N(A)
Secondary channels
V
V
S/N(A)
Crosstalk
SYMBOL
Demodulation of main audio signal using wide band PLL
(lock range selectable)
HF input selection: two-out-of-eight secondary audio
signals can be selected
Demodulation of secondary audio signals using wide
band PLL
Noise reduction of the secondary audio signals
Output selection: stereo, language 1, language 2, main
audio and external
Mute control
Line outputs (SCART level).
f
f
S/M
M/S
S/S
P
IN3(rms)
OM
IN1,IN2(rms)
OR,OL
Satellite sound circuit with noise reduction
OM
OS1,2
supply voltage
input sensitivity pin 18 (14) (RMS value)
lock range PLL demodulator
output voltage pin 23 (19)
signal-to-noise ratio
input sensitivity pins 2, 4, 6, 8, 10, 12, 14 and 16
(1, 3, 5, 7, 9, 11, 40 and 42) (RMS value)
lock range PLL demodulators
output voltage pins 24 and 25 (20 and 21)
signal-to-noise ratio
crosstalk from secondary to main channel
crosstalk from main to secondary channel
crosstalk between secondary channels
either
or
PARAMETER
2
APPLICATIONS
GENERAL DESCRIPTION
The TDA8742; TDA8742H is a multi-function sound IC for
use in satellite receivers, television sets and video
recorders. The pin numbers given in parenthesis
throughout this document refer to the QFP44 package.
Satellite receivers
TV sets
Video recorders.
S/N(A) = 40 dB
A-weighted
S/N(A) = 40 dB
A-weighted
CONDITIONS
TDA8742; TDA8742H
8
5.5
10.0
62
10.0
72
MIN.
9
8
12
1.0
70
0.8
80
74
74
74
Product specification
TYP.
6
6
13.2
2.0
7.5
11.5
1.5
11.5
MAX.
4
4
V
mV
MHz
MHz
dBV
dB
mV
MHz
dBV
dB
dB
dB
dB
UNIT