SGS Thomson Microelectronics TDA8198 Datasheet
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
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
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