TDA8191 Datasheet, PDF (2/6 Pages) STMicroelectronics – TV SOUND CHANNEL

TDA8191
BLOCK DIAGRAM
V_S
C5
C7
R3
C6
18
1
C1
IF IN
C2
C3
VOLTAGE
REGULATOR
TURN-ON AND
TURN-OFF
SWITCH
2
IF
R1
AMP.
LIM.
3
4
LOW-PASS
FILTER
THRESHOLD
SENSOR
FM
DETECTOR
AMPLI.
R0 1.1kΩ
C12
14 20
RL
C15
DC VOLUME
CONTROL
AFPA
17
C16
R4
R6
R5
19
C17
R8
13
R7 P2
12
THERMAL
PROTECTION
VOLUME
5 6 15 16 7
8
L1
C8
C9
9 _C10
C11
10 11
C1 3
SWITCH
CTRL
AF OUT
AF IN
ABSOLUTE MAXIMUM RATINGS
Symbol
V_S
V_l
VI
IO
I_O
Ptot
Tstg, Tj
Parameter
Supply Voltage (pin 18)
Voltage at Pin 1
Input Voltage (pin 2)
Output Peak Current (repetitive)
Output Peak Current (non repetitive)
Total Power Dissipation : at Tpins = 90°C
at Tamb = 70°C
Storage and Junction Temperature
Value
Unit
28
V
± V_S
1
VPP
1.5
A
2
A
4.3
W
1
W
– 40 to 150
°C
THERMAL DATA
Symbol
Rth (j-pins)
R_{th (j-a)}
Parameter
Junction-pins Thermal Resistance
Junction-ambient Thermal Resistance
Value
Unit
Max
14
°C/W
Max
80
°C/W
ELECTRICAL CHARACTERISTICS
(Refer to fig. 1 ; V_S = 24V, R_L = 16Ω, Pin 11 floating, ∆f = ±50kHz, V_i = 1mV, f_o = 5.5MHz, f_m = 1kHz,
Tamb = 25^oC unless otherwise specified)
Symbol
V_S
V_O
V₁
ID
VI
Parameter
Supply Voltage (Pin 18)
Quiescent Output Voltage (Pin 17)
Pin 1 DC Voltage
Quiescent Drain Current
Input Limiting Voltage at Pin 2 (– 3dB)
Test Conditions
Vc = 4.5V
Vc = 4.5V
Vc = 4.5V
Vc = 4.5V
Vo = 4VRMS
Min. Typ. Max. Unit
10.8 24 27
V
11 12 13
V
5.3
V
35
mA
50 100 µV
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