Document Outline
- GENERAL DESCRIPTION
- QUICK REFERENCE DATA
- PACKAGE OUTLINE
- RATINGS
- CHARACTERISTICS
- PACKAGE OUTLINE
- SOLDERING
- DEFINITIONS
- LIFE SUPPORT APPLICATIONS
DATA SHEET
Product specification
File under Integrated Circuits, IC02
November 1987
INTEGRATED CIRCUITS
TDA3803A
Stereo/dual TV sound decoder
circuit
November 1987
2
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
PACKAGE OUTLINE
28-lead DIL; plastic (SOT117); SOT117-1; 1996 November 25.
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
= 0 dB
(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
60
dB
Crosstalk in stereo mode
S
>
40
dB
Crosstalk in dual sound mode
DS
>
60
dB
November 1987
3
Philips Semiconductors
Product specification
Stereo/dual TV sound decoder circuit
TDA3803A
Fig.1 Block diagram.
November 1987
4
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
5
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
-
k
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
-
k
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
0,5%)
port I (V
23-12
= V
22-12
)
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)
S
40
-
-
dB
dual sound mode (f = 250 Hz to 12,5 kHz)
DS
60
-
-
dB
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