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INTEGRATED CIRCUITS
DATA SHEET
TDA3803A
Stereo/dual TV sound decoder
circuit
Product specification
File under Integrated Circuits, IC02
November 1987
Philips Semiconductors
Product specification
Stereo/dual TV sound decoder circuit
TDA3803A
GENERAL DESCRIPTION
The TDA3803A is a stereo/dual TV sound decoder circuit with static switching for processing two AF signals in TV and
VCR equipment. The LOW/HIGH static switching signals control the AF output selector. Two operational amplifiers
perform bandpass filtering of the identification signals.
Features
·
Amplification of the two AF input signals by integrated operational amplifiers
·
Low distortion stereo de-matrix
·
All operational amplifiers offset compensated
·
De-emphasis with operational amplifiers, preferably applied to the output terminals
·
Two output ports each with two channels for headphones and loudspeakers
·
Dual sound information at one port, each port individually switchable from sound I to sound II and sound II to sound I
·
Mute function; while mute is active, it is possible to connect an external mono AF input signal to pin 10 appearing at
pins 20 to 23.
·
Identification without additional signals (horizontal etc.)
QUICK REFERENCE DATA
Supply voltage (pin 13)
V
P
=V
13-12
typ.
12
V
Supply current (pin 13)
I
P
=I
13
typ.
28
mA
Pilot carrier amplifier gain control range
G
v
>
40
dB
A.F. input signals; at G
v
=0dB
(r.m.s. value)
V
i(rms)
=
1
V
LED output current
I
LED
typ.
12
mA
Weighted signal-to-noise ratio
of the a.f. signal switches (CCIR468/2)
(S
+
N)/N
³
60
dB
Crosstalk in stereo mode
a
S
>
40
dB
Crosstalk in dual sound mode
a
DS
>
60
dB
PACKAGE OUTLINE
28-lead DIL; plastic (SOT117); SOT117-1; 1996 November 25.
November 1987
2
D
Philips Semiconductors
Product specification
Stereo/dual TV sound decoder circuit
TDA3803A
November 1987
3
Philips Semiconductors
Product specification
Stereo/dual TV sound decoder circuit
TDA3803A
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Supply voltage (pin 13)
V
P
=V
13-12
max. 14
V
Voltages with respect to pin 12 (ground)
pins 25; 27 and 28
V
25; 27; 28-12
max. V
P
Voltages
pin 1 to pin 10
V
n-12
max. V
P
pin 14 to pin 19
V
n-12
max. V
P
Currents
pin 11
I
11
max. 3
mA
pins 20; 21; 22; 23
I
20;21;22;23
max. 10
mA
pin 28
-
I
28
max. 3
mA
Total power dissipation
P
tot
max. 1,5
W
Storage temperature range
T
stg
-
25 to
+
125
°
C
Operating ambient temperature range
T
amb
0 to
+
70
°
C
November 1987
4
Philips Semiconductors
Product specification
Stereo/dual TV sound decoder circuit
TDA3803A
CHARACTERISTICS
V
P
= 12 V; T
amb
=25
°
C; overall voltage gain (G
v
) = 1; (R
S
=R
R
); measured in Fig.2 with a 1 kHz signal.
AF input AF2 = AF1 = 0,5 V, pilot carrier input signal V
2-12(rms)
= 16 mV, m = 0,5 and with adjusted de-matrix circuit;
unless otherwise specified
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply
(pin 13)
Supply voltage range
V
P
=V
13-12
10,8
12
13,2
V
Supply current (without LED current)
I
P
=I
13
-
28
35
mA
Reference voltage (pin 11)
V
ref
-
6
-
V
Input resistance (dynamic)
R
11-12
-
4
-
W
AF part
Amplification
G
v
-
40
-
18
dB
Input signal at G
v
=1
V
AF1
=V
AF2
-
-
1
V
Mono AF input signal (pin 10); note 1
Input signal
V
10-12
-
-
2
V
DC input voltage level
V
10-12
-
6
-
V
Input resistance
R
10-12
16
-
W
Stereo mode
AF output port I
pin 22: right
pin 23: left
AF output port II
pin 20: right
pin 21: left
Output signal (THD
£
V
ol
-
-
2
V
port II (V
21-12
=V
20-12
)
V
oII
-
-
2
V
Weighted signal-to-noise ratio
of the AF signal switches
(in accordance with CCIR468/2)
(S
+
N)/N
65
-
dB
Unweighted signal-to-noise
(S
+
N)/N
60
-
-
dB
Total harmonic distortion
(V
20;21;22;23-12
= 0,5 V; G
v
= 1)
THD
-
0,05
-
%
Crosstalk attenuation (selective)
stereo mode (f
1
= 1 kHz; f
2
= 400 Hz)
a
S
40
-
-
dB
dual sound mode (f = 250 Hz to 12,5 kHz)
a
DS
60
-
-
dB
November 1987
5
k
k
0,5%)
port I (V
23-12
=V
22-12
)
Plik z chomika:
esiek333
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