Page 1
AND DC VOLUME CONTROLFOR TV
■
A DOUBLE TWO-INPUT CIRCUITS WITH
SWITCHINGFACILITIES
■
ADOUBLE DC VOLUMECONTROL
■
12dB MAXIMUMGAIN
■
90dBSIGNAL DYNAMICRANGE
TDA8198
DOUBLE AUDIO SWITCH
DESCRIPTION
The TDA8198 is a monolithic integrated circuit in
DIP14package intented for TV applicationswhich
provides Audio switching facilities between two
doubleinputs including DC volume control.
PINCONNECTIONS
RIGHTINPUT2
NOTTO BE CONNECTED
RIGHTOUTPUT RIGHTVOLUMECONTROL
GROUND
LEFTOUTPUT
LEFTINPUT2
1
2
3
4
5
V
6
S
7
BLOCK DIAGRAM
TDA8198
SWITCH
REFERENCE
7
IMPEDANCE
ADAPTER
VOLTAGE
ORDER CODE : TDA8198
14
NOTTO BE CONNECTED
13
RIGHTINPUT1
12
11
LEFTVOLUMECONTROL
10
C
REF
LEFTINPUT 1
9
SWITCHCONTROL
8
SWITCH
DIP14
(Plastic Package)
6108
IMPEDANCE
ADAPTER
8198-01.EPS
13
May 1996
9
IMPEDANCE
ADAPTER
V1V1
VOLUME
CONTROL
11 5 3 12 4
VOLUME
CONTROL
IMPEDANCE
ADAPTER
1
8198-02.EPS
1/5
Page 2
TDA8198
ABSOLUTEMAXIMUM RATINGS
Symbol Parameter Value Unit
V
T
stg
T
oper
ELECTRICALCHARACTERISTICS
Measuredaccording to the followingconditions, unlessotherwise specified : T
Symbol Parameter Min. Typ. Max. Unit
V
I
S
V
V
R
SW
V
∆k DC VolumeControl Range @ VI= 0.3V
k
MIN
dK Gain Difference between Channelsat V
V
THD1 Distortion for V
THD2 Distortion for V
C
C
R
R
I-V
Supply Voltage 16 V
S
Storage Temperature -55, +125
Operating Ambient Temperature 0, +70
=25oC, VS= +12V.
amb
Supply Voltage Range 10.8 12 13.2 V
S
Supply Current (VIN=0,VC= 0.5V) 24 32 mA
Reference Voltage 6.9 V
R
Mode Selection Voltage
M
Audio 1
Audio 2 9.5
Switching Input Resistance 15 30 kΩ
Audio InputAmplitude 0.125 0.3 V
I
RMS
70 90 dB
Output/Input Gain for Maximum Volume(VC= 5V) 12 dB
=5V 0 dB
C
VoltageControl Range
C
k=k
k=k
Crosstalk between Switched Inputs 80 dB
T
Crosstalk between Channels 1 & 2 70 dB
C
Audio Input Resistance 22 kΩ
I
Audio Output Resistance 10 300 Ω
O
Output Noise Level @ V
VolumeControl Input Current (Pins 11 and 12) at VC= 5V -12 µA
C
Volumethermal stability (k = 30dB, 0 < T
(volume minimum)
MAX
(volume maximum) 5
MIN
= 0.25V
I
= 1.2V
O
at Maximum Volume 0.3 1 %
RMS
RMS
= 5V (weighted) (curve : DIN45 405) 300 µV
C
<60oC) 0.04 dB/oC
amb
5
V
S
0.5
5%
o
C
o
C
V
RMS
V
RMS
8198-01.TBL
8198-02.TBL
2/5
Page 3
TDA8198
Figure1 : Gain versusVolumeControl
20
0
V =0.3V
-20
IN RMS
f = 1kHz
-40
GAIN (dB)
-60
-80
-100
0123456
VOLUME CONTROL(V)
Figure3 : Distortionversus VoltageInput
20
16
12
8
DISTORTION(%)
4
Figure2 : Distortion versusVolumeControl
0.45
V =0.25V
0.40
0.35
IN RMS
f = 1kHz
0.30
0.25
0.20
DISTORTION (%)
0.15
0.10
0.05
2.5 3.5 4.5 5.5
8198-03.EPS
VOLUME CONTROL(V)
Figure4 : SupplyVoltageRejection
-20
V=5V
C
V=0V
C
SVR (dB)
-24
-28
-32
-36
-40
V = 0.3V
IN RMS
f = 100Hz
8198-04.EPS
0.2 0.4 0.6 0.8 10
VOLTAGE INPUT (V )
RMS
Figure5 : VolumeControl Currentversus
Voltage(pins 11 - 12)
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
VOLUMECONTROL CURRENT (µA)
0123456
VOLUMECONTROL (V)
-44
10 11 12 13 14 15 16
8198-05.EPS
SUPPLY VOLTAGE(V)
Figure6 : Switch Current versus Voltage (pin 8)
400
350
300
250
200
150
100
50
SWITCH CURRENT (µA)
0
-50
8198-07.EPS
20 4 6 8 10 12
SWITCHVOLTAGE(V)
8198-06.EPS
8198-08.EPS
3/5
Page 4
TDA8198
APPLICATION DIAGRAM
RIGHT INPUT 1
RIGHT INTPUT 2
SWITCH CONTROL
LEFT INPUT 1
LEFT INPUT 2
+V
S
6
1k
1k
1k
1k
2.2µF
Ω
Ω
2.2µF
2.2µF
Ω
Ω
2.2µF
13
1
8
9
7
TDA8198
SWITCH
SWITCH
4
REFERENCE
VOLTAGE
12
VOLUME
CONTROL
VOLUME
CONTROL
11
1µF
3
R
10k
Ω
L
10
V
REF
6.9V
1µF
5
10k
R
Ω
L
RIGHT VOLUME
CONTROL
(0.5 to 5V)
RIGHT
OUPUT
LEFT
OUTPUT
LEFT VOLUME
CONTROL
(0.5 to 5V)
8198-09.EPS
4/5
Page 5
PACKAGEMECHANICALDATA
14 PINS- PLASTICDIP
TDA8198
Dimensions
Min. Typ. Max. Min. Typ. Max.
Millimeters Inches
a1 0.51 0.020
B 1.39 1.65 0.055 0.065
b 0.5 0.020
b1 0.25 0.010
D 20 0.787
E 8.5 0.335
e 2.54 0.100
e3 15.24 0.600
F 7.1 0.280
I 5.1 0.201
L 3.3 0.130
Z 1.27 2.54 0.050 0.100
Informationfurnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronicsassumes no responsibility
for theconsequences ofuse of such information norfor anyinfringement of patents or other rights of third parties which may result
from itsuse. Nolicence is grantedby implication or otherwise under anypatent or patentrights of SGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
informationpreviously supplied. SGS-THOMSONMicroelectronics products are not authorized for use as critical components in life
support devices or systems withoutexpress writtenapproval of SGS-THOMSON Microelectronics.
1996 SGS-THOMSON Microelectronics - All Rights Reserved
Purchase of I
2
I
C Patent.Rights to use these components in aI2C system,is granted provided that the system conforms to
Australia -Brazil - Canada - China - France - Germany -Hong Kong - Italy - Japan - Korea - Malaysia - Malta- Morocco
The Netherlands - Singapore -Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
2
C Components of SGS-THOMSON Microelectronics, conveys a licenseunder the Philips
2
the I
C Standard Specificationsas defined by Philips.
SGS-THOMSON Microelectronics GROUP OF COMPANIES
DIP14.TBL PM-DIP14.EPS
5/5
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