STMICROELECTRONICS TDA8198

TDA8198
DOUBLE AUDIO SWITCH
AND DC VOLUME CONTROL FOR TV
■
■
■
■
A DOUBLE TWO-INPUT CIRCUITS WITH
SWITCHING FACILITIES
A DOUBLE DC VOLUME CONTROL
12dB MAXIMUM GAIN
90dB SIGNAL DYNAMIC RANGE
DIP14
(Plastic Package)
DESCRIPTION
The TDA8198 is a monolithic integrated circuit in
DIP14 package intented for TV applications which
provides Audio switching facilities between two
double inputs including DC volume control.
ORDER CODE : TDA8198
PIN CONNECTIONS
1
14
NOT TO BE CONNECTED
NOT TO BE CONNECTED
2
13
RIGHT INPUT 1
RIGHT OUTPUT
3
12
RIGHT VOLUME CONTROL
GROUND
4
11
LEFT VOLUME CONTROL
LEFT OUTPUT
5
10
C REF
VS
6
9
LEFT INPUT 1
LEFT INPUT 2
7
8
SWITCH CONTROL
8198-01.EPS
RIGHT INPUT 2
BLOCK DIAGRAM
8
10
6
TDA8198
IMPEDANCE
ADAPTER
SWITCH
S WITCH
IMPEDANCE
ADAPTER
REFERENCE
VOLTAGE
7
13
V
1
V
VOLUME
CONTROL
1
IMPEDANCE
ADAPTER
VOLUME
CONTROL
9
1
11
May 1996
5
3
12
8198-02.EPS
IMPEDANCE
ADAPTER
4
1/5
TDA8198
ABSOLUTE MAXIMUM RATINGS
Parameter
VS
Supply Voltage
Tstg
Storage Temperature
Toper
Operating Ambient Temperature
Value
Unit
16
V
-55, +125
o
0, +70
o
C
C
8198-01.TBL
Symbol
ELECTRICAL CHARACTERISTICS
Measured according to the following conditions, unless otherwise specified : Tamb = 25oC, VS = +12V.
Parameter
VS
Supply Voltage Range
Typ.
Max.
Unit
10.8
12
13.2
V
32
mA
IS
Supply Current (VIN = 0, VC = 0.5V)
24
VR
Reference Voltage
6.9
VM
Mode Selection Voltage
Audio 1
Audio 2
9.5
Switching Input Resistance
15
R SW
VI
Audio Input Amplitude
∆k
DC Volume Control Range @ VI = 0.3VRMS
V
V
5
VS
30
0.125
70
kΩ
0.3
VRMS
90
dB
kMIN
Output/Input Gain for Maximum Volume (V C = 5V)
12
dB
dK
Gain Difference between Channels at VC = 5V
0
dB
VC
Voltage Control Range
k = kMAX (volume minimum)
k = kMIN (volume maximum)
THD1
Distortion for VI = 0.25VRMS at Maximum Volume
THD2
Distortion for VO = 1.2VRMS
V
0.5
5
0.3
1
%
5
%
CT
Crosstalk between Switched Inputs
80
dB
CC
Crosstalk between Channels 1 & 2
70
dB
RI
Audio Input Resistance
22
kΩ
RO
Audio Output Resistance
10
Output Noise Level @ VC = 5V (weighted) (curve : DIN45 405)
300
µVRMS
Volume Control Input Current (Pins 11 and 12) at VC = 5V
-12
µA
0.04
dB/oC
I - VC
o
Volume thermal stability (k = 30dB, 0 < Tamb < 60 C)
2/5
Min.
300
Ω
8198-02.TBL
Symbol
TDA8198
Figure 2 : Distortion versus Volume Control
20
0.45
0
0.40
VIN = 0.3V RMS
f = 1kHz
-20
DISTORTION (%)
-40
-60
-80
0.35
0.30
0.25
0.20
0.15
0.10
0
1
2
3
4
5
6
VOLUME CONTROL (V)
0.05
2.5
8198-03.EPS
-100
Figure 3 : Distortion versus Voltage Input
3.5
4.5
5.5
VOLUME CONTROL (V)
Figure 4 : Supply Voltage Rejection
20
-20
16
-24
V C = 5V
-28
12
SVR (dB)
DISTORTION (%)
V IN = 0.25V RMS
f = 1kHz
8198-04.EPS
GAIN (dB)
Figure 1 : Gain versus Volume Control
8
V IN = 0.3V RMS
f = 100Hz
-32
-36
4
0.2
0.4
0.6
0.8
1
VOLTAGE INPUT (V RMS)
Figure 5 : Volume Control Current versus
Voltage (pins 11 - 12)
11
12
13
14
15
16
SUPPLY VOLTAGE (V)
Figure 6 : Switch Current versus Voltage (pin 8)
-1
-2
-3
-4
-5
-6
-7
-8
400
SWITCH CURRENT (µA)
350
-9
-10
-11
-12
300
250
200
150
100
50
0
1
2
3
4
VOLUME CONTROL (V)
5
6
-50
0
2
4
6
8
10
12
SWITCH VOLTAGE (V)
3/5
8198-08.EPS
0
8198-07.EPS
VOLUME CONTROL CURRENT (µA)
-44
10
8198-05.EPS
0
V C = 0V
8198-06.EPS
-40
TDA8198
APPLICATION DIAGRAM
RIGHT VOLUME
CONTROL
(0.5 to 5V)
+V S
4
6
RIGHT INP UT 1
1k Ω
2.2µF
1µF
13
SWITCH
1
1k Ω
12
VOLUME
CONTROL
RIGHT
OUPUT
3
RL
2.2µF
10kΩ
RIGHT INTPUT 2
S WITCH CONTROL
REFERENCE
VOLTAGE
8
10
VREF
6.9V
LEFT INPUT 1
2.2µF
1µF
9
SWITCH
7
1k Ω
LEFT INPUT 2
2.2µF
VOLUME
CONTROL
LEFT
OUTPUT
5
RL
10kΩ
TDA8198
11
LEFT VOLUME
CONTROL
(0.5 to 5V)
4/5
8198-09.EPS
1k Ω
TDA8198
PM-DIP14.EPS
PACKAGE MECHANICAL DATA
14 PINS - PLASTIC DIP
a1
B
b
b1
D
E
e
e3
F
I
L
Z
Min.
0.51
1.39
Millimeters
Typ.
Max.
1.65
Min.
0.020
0.055
0.5
0.25
Inches
Typ.
0.065
0.020
0.010
20
0.787
8.5
2.54
15.24
0.335
0.100
0.600
7.1
5.1
0.280
0.201
3.3
1.27
Max.
DIP14.TBL
Dimensions
0.130
2.54
0.050
0.100
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result
from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without noti ce. This publication supersedes and replaces all
information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life
support devices or systems without express written approval of SGS-THOMSON Microelectronics.
 1996 SGS-THOMSON Microelectronics - All Rights Reserved
Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips
I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to
the I2C Standard Specifications as defined by Philips.
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