SGS Thomson Microelectronics TDA8191 Datasheet
.
HIGHSENSITIVITY
.
EXCELLENTAM REJECTION
.
DCVOLUME CONTROL
.
PERITELEVISIONFACILITY
.
4W OUTPUTPOWER
.
LOW DISTORTION
.
THERMAL PROTECTION
.
TURN-ON AND TURN-OFF MUTING
TDA8191
TV SOUND CHANNEL
DIP20
(Plastic Package)
ORDER CODE : TDA8191
DESCRIPTION
The TDA8191isa monolithicintegratedcircuitthat
includesallthefunctionsneededfora completeTV
soundchannel.TheTDA8191is assembledina 20
pin dual in line power package.
PIN CONNECTION
TURN-ONAND TURN-OFFMUTING
SOUNDIF INPUT
IF DECOUPLING
IF DECOUPLING
GND
GND
DETECTOR(FM)
DETECTOR(FM)
DEEMPHASISAND AF OUT
AF INPUT
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
AF PA INPUT
AF PA FEEDBACK
SUPPLYVOLTAGE
AF PA OUTPUT
GND
GND
DCVCOUTPUT
VOLUMECONTROL
REF.VOLTAGE
FUNCTIONSWITCH
8191-01.EPS
September 1993
1/6
TDA8191
BLOCK DIAGRAM
V
IF IN
S
C5
C1
C2
C3
R1
C6
2
3
4
REGULATOR
IF
AMP.
LIM.
VOLTAGE
C7
R3
TURN-ONAND
TURN-OFF
LOW-PASS
FILTER
FM
DETECTOR
1
SWITCH
THRESHOLD
SENSOR
AMPLI.
R0 1.1kΩ
DC VOLUME
CONTROL
C12
1418
20
AFPA
THERMAL
PROTECTION
R
L
C15
17
19
13
12
R4
C17
C16
R5
R8
R7 P2
R6
VOLUME
5 61516
78
L1
C8 C11
C9
9 10 11
C10
C13
AF OUT AF IN
SWITCH
CTRL
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
I
I
P
T
stg,Tj
S
O
O
tot
Supply Voltage(pin 18) 28 V
Voltage at Pin1 ± V
l
Input Voltage(pin 2) 1 V
I
S
Output Peak Current (repetitive) 1.5 A
Output Peak Current (non repetitive) 2 A
Total Power Dissipation : at Tpins = 90°C
at Tamb = 70°C
4.3
1
Storage and Junction Temperature – 40 to 150 °C
THERMALDATA
Symbol Parameter Value Unit
R
th (j-pins)
R
th (j-a)
Junction-pins Thermal Resistance Max 14 °C/W
Junction-ambient Thermal Resistance Max 80 °C/W
8191-02.EPS
PP
W
W
8191-01.TBL
8191-02.TBL
ELECTRICALCHARACTERISTICS
(Refer to fig. 1 ; V
=25oC unlessotherwise specified)
T
amb
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
V
V
2/6
Supply Voltage(Pin 18) Vc = 4.5V 10.8 24 27 V
S
Quiescent Output Voltage (Pin 17) Vc = 4.5V 11 12 13 V
O
Pin 1 DC Voltage Vc = 4.5V 5.3 V
1
I
Quiescent Drain Current Vc = 4.5V 35 mA
D
V
Input LimitingVoltage at Pin 2 (– 3dB) Vo = 4V
I
=24V,RL=16Ω, Pin11 floating, ∆f=±50kHz, Vi=1mV, fo=5.5MHz, fm= 1kHz,
S
RMS
50 100 µV
8191-03.TBL
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