TDA8191
TV SOUND CHANNEL
September 1993
.
HIGH SENSITIVITY
.
EXCELLENT AM REJECTION
.
DC VOLUME CONTROL
.
PERITELEVISION FACILITY
.
4W OUTPUT POWER
.
LOW DISTORTION
.
THERMAL PROTECTION
.
TURN-ON AND TURN-OFF MUTING
DIP20
(Plastic Package)
ORDER CODE : TDA8191
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
SOUND IF INPUT
IF DECOUPLING
GND
DETECTOR (FM)
DETECTOR (FM)
GND
IF DECOUPLING
AF PA INPUT
AF PA FEEDBACK
SUPPLY VOLTAGE
AF PA OUTPUT
GND
DCVC OUTPUT
GND
TURN-ON AND TURN-OFF MUTING
DEEMPHASIS AND AF OUT
AF INPUT
VOLUME CONTROL
FUNCTION SWITCH
REF. VOLTAGE
8191-01.EPS
PIN CONNECTION
DESCRIPTION
The TDA8191 is a monolithic integrated circuit that
includes all the functions needed for a complete TV
sound channel. The TDA8191 is assembled in a 20
pin dual in line power package.
1/6
1
4
7
8
9
10
11
13
14
18
19
20
C5
C7
R3
C6
V
S
2
3
R0 1.1k
R1
C1
C2
C3
IF IN
5
6
15
16
L1
C9
C8
C11
C10
C1 3
SWITCH
CTRL
AF OUT
AF IN
C12
17
C17
C15
C16
R5
R4
R8
R7
P2
VOLUME
12
R6
R L
DC VOLUME
CONTROL
VOLTAGE
REGULATOR
TURN-ON AND
TURN-OFF
SWITCH
LOW-PASS
FILTER
THRESHOLD
SENSOR
FM
DETECTOR
THERMAL
PROTECTION
AMPLI.
IF
AMP.
LIM.
AFPA
8191-02.EPS
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
Supply Voltage (pin 18)
28
V
V
l
Voltage at Pin 1
V
S
V
I
Input Voltage (pin 2)
1
V
PP
I
O
Output Peak Current (repetitive)
1.5
A
I
O
Output Peak Current (non repetitive)
2
A
P
tot
Total Power Dissipation : at Tpins = 90
C
at Tamb = 70
C
4.3
1
W
W
T
stg
, T
j
Storage and Junction Temperature
40 to 150
C
8191-01.TBL
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th (j-pins)
Junction-pins Thermal Resistance
Max
14
C/W
R
th (j-a)
Junction-ambient Thermal Resistance
Max
80
C/W
8191-02.TBL
ELECTRICAL CHARACTERISTICS
(Refer to fig. 1 ; V
S
= 24V, R
L
= 16
, Pin 11 floating,
f =
50kHz, V
i
= 1mV, f
o
= 5.5MHz, f
m
= 1kHz,
T
amb
= 25
o
C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
S
Supply Voltage (Pin 18)
Vc = 4.5V
10.8
24
27
V
V
O
Quiescent Output Voltage (Pin 17)
Vc = 4.5V
11
12
13
V
V
1
Pin 1 DC Voltage
Vc = 4.5V
5.3
V
I
D
Quiescent Drain Current
Vc = 4.5V
35
mA
V
I
Input Limiting Voltage at Pin 2 ( 3dB)
Vo = 4V
RMS
50
100
V
8191-03.TBL
TDA8191
2/6
ELECTRICAL CHARACTERISTICS (continued)
(Refer to fig. 1 ; V
S
= 24V, R
L
= 16
, Pin 11 floating,
f =
50kHz, V
i
= 1mV, f
o
= 5.5MHz, f
m
= 1kHz,
T
amb
= 25
o
C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
9
Recovered Audio Voltage (pin 9)
V
C
= 4.5V,
f =
15kHz
200
400
mV
RMS
R
9
Deemphasis Resistance
f = 20Hz to 20kHz
500
700
1000
AMR
Amplitude Modul. Rejection
m = 0.3, V
O
= 4V
RMS
45
60
dB
R
I
Input Resistance (pin 2)
f = 0
30
k
C
I
Input Capacitance (pin 2)
f = 0, V
C
=4.5V
6
pF
V
12
DCVC Reference Voltage
5.6
6.2
V
Kv
Volume Attenuation
V
C
= 0.5V ; Fig. 2
V
C
= 4.5V ; Fig. 2
80
1.0
dB
dB
K
V
T
j
Volume Attenuation Thermal Drift
T
j
= 300 to 380
K Fig. 3
0.05
0.1
dB/
C
P
O
Output Power (d = 10%)
3.5
4
W
SVR
Supply Voltage Rej.
(Pin 17)
(Pin 9)
V
C
= 4.5V
f
ripple
= 100Hz
20
50
26
60
dB
dB
V
11
Function Switch.
- Television Broadc.
Reproduction
0
2
V
or Pin 11 Floating
- Peritelevision Reproduction
8
12
V
R
11
Input Resistance
10
k
V
10
Input Voltage (d
2%)
V
O
= 4V
RMS
; V
11
= 12V
0.5
2.0
V
RMS
R
10
Input Resistance
f = 20Hz to 20kHz
10
k
CT
Crosstalk between Pins 9, 10
60
dB
S
+
N
N
Signal to Noise Ratio
f = 0 ; V
O
= 4V
RMS
60
70
dB
d
Distortion (P
O
= 250mV)
2
%
f
Deviation Sens.
V
C
= 0.5V ; V
O
= 4V
RMS
4
10
kHz
8191-04.TBL
4
0.1
F
68 nF
1
F
OUT
1
F
IN
V11
SW
11k
24k
22
F
22
F
270
15k
22
47 0
F
220 nF
R1
270k
4.7
F
0.1
F
51
0.1
F
47 0
F
VS
0 .1
F
V
i
IF
inp ut
9
10
11
12
13
14
20
19
17
16
15
6
5
1
18
2
3
4.5k
TDA 8191
V o
VC
V10
RL
68pF
L1
8.2pF
7
8
L1 : Qu = 80 @ f
0
= 5.5MHz
8191-03.EPS
Figure 1 : Test Circuit
TDA8191
3/6
1
2
3
4
5
0
90
80
70
60
50
40
30
20
10
0
K Tip (dB)
T = 300
k
T
V
(V)
C
k
12 dB
(30 +/-6 dB)
k+ Noise
8191-05.EPS
Figure 2 :
Volume Attenuationversus
DC Volume Control Voltage
K (dB)
-30
-20
-10
10
k
30
50
70
90
110
0
10
TYP at T = 380
k
WORST CASE at T = 380
k
J
J
-40
-50
20
30
8191-06.EPS
Figure 3 :
Volume Attenuation Thermal Drift
4
0.1
F
68nF
1
F
OUT
1
F
IN
V11
S W
11k
24k
2.2
F
15k
0.1
F
560
9
10
11
12
13
14
20
2
3
1. 5k
TDA 8191
VC
V10
560
0.1
F
IF
input
V9
R2
6.6
220nF
2.2
F
270
19
C1 = 4.7nF
17
16
15
6
5
470
F
Vo
R1 = 1.8k
270k
4.7
F
0.1
F
470
F
VS
1
18
RL
68pF
L1
8.2pF
7
8
Volume
L1 : Qu = 80e, fo = 5.5MHz.
8191-04.EPS
TYPICAL APPLICATION
10
4
10
5
90
80
70
60
50
40
30
20
10
0
V (dB)
o
S+N
N (dB)
10
10
2
10
3
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
0dB = 4V
Vo
S+N
N
V (
V)
i
8191-07.EPS
Figure 4 :
Relative Audio Output Voltage and
Output Noise versus Input Signa
d (%)
0
2
4
6
8
10
10
-2
10
-1
1
V = 12V, R = 8
V = 24V, R = 16
S
L
S
L
P
l
(W)
o
10
8191-08.EPS
Figure 5 :
Distortion versus Output Power
TDA8191
4/6
8
10
12
14 16
18
20 22 24
26 28
V (V)
s
R = 8
L
R = 16 =
L
P (W)
o
0
1
2
3
4
5
d = 10%
8191-10.EPS
Figure 7 :
Output Power versus Supply Voltage
P
(W)
tot
P (W)
o
Ptot
(%)
1
2
3
4
5
0
1
1.5
2
2.5
3
0
20
40
60
80
100
R = 16
L
8191-12.EPS
Figure 9 :
Power Dissipation and Efficiency ver-
sus Output Power
10
4
10
5
V (dB)
o
10
10
2
10
3
-8
-6
-4
-2
0
2
f
(Hz)
A
V
= 8V
V
= 200V
R
= 16
11
10
L
8191-09.EPS
Figure 6 :
Audio Amplifier Frequency Response
R = 8
L
d = 10%
V (V)
s
R = 16
L
8
10 12
14 16 18
20 22 24
26 28
0
1
2
3
4
P
(W)
tot
8191-11.EPS
Figure 8 :
Power Dissipation versus Supply Volt-
age (sine wave operation)
V (V)
s
8
12
16
20
24
28
0
5
10
15
20
V = 0
P2 = 12k
i
IS
Vo
I
(mA)
S
29
30
31
32
33
Vo
8191-13.EPS
Figure 10 : Quiescent Drain and Quiescent Out-
put Voltage versus Supply Voltage
TDA8191
5/6
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