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STMicroelectronics Electronic Components Datasheet

TDA7494 Datasheet

10W AMPLIFIER

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TDA7494
10W AMPLIFIER WITH DC VOLUME CONTROL
10W OUTPUT POWER RL = 8,
@ THD = 10% VCC = 28V
ST-BY AND MUTE FUNCTIONS
LINEAR VOLUME CONTROL DC COUPLED
WITH POWER OP AMPLIFIER
NO BOUCHEROT CELL
NO ST-BY RC INPUT NETWORK
SIGNAL LINE OUTPUT BEFORE VOLUME
CONTROLLING AND MUTING
3 SWITCHABLE VOLTAGE CONTROLLED
INPUT PINS
SINGLE SUPPLY RANGING UP TO 35V
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
INTERNALLY FIXED GAIN
SOFT CLIPPING
LOW TURN-ON TURN-OFF POP NOISE
MULTIWATT 15 PACKAGE
BLOCK AND APPLICATION DIAGRAM
MULTIPOWER BI50II TECHNOLOGY
Multiwatt15
ORDERING NUMBER: TDA7494
DESCRIPTION
The TDA7494 10W is class AB power amplifier
assembled in the @Multiwatt 15 package, spe-
cially designed for high quality sound, TV applica-
tions.
Features of the TDA7494 include volume control,
3 switchable inputs, Stand-by and mute functions.
3x
470nF
IN 1
IN 2
IN 3
5
6
1
PWR GND
15
SGN GND 8
D95AU414D
SW
1
2
3
VOL
2K
PWR
13 +VCC
14
470µF
MUTE/STBY
PROTECTIONS
OUT
100K
24
MONITOR
OUT
100K
300nF
3 79
SVR
STAND-BY
10
300nF
10K
470µF
SW CTL
VOL CTL
MUTE
1µF
February 1997
1/12


STMicroelectronics Electronic Components Datasheet

TDA7494 Datasheet

10W AMPLIFIER

No Preview Available !

TDA7494
ABSOLUTE MAXIMUM RATINGS
Symbol
VS
VIN
Ptot
Tamb
Tstg, Tj
V2, V3
Parameter
DC Supply Voltage
Maximum Input Voltage
Total Power Dissipation (Tamb = 70°C)
Ambient Operating Temperature Range (1)
Storage and Junction Temperature
Volume CTRL DC voltage
(1) Operation between -20 to 85 °C guaranteed by correlation with 0 to 70°C.
PIN CONNECTION
Value
35
8
16
-20 to +85
-40 to 150
7
Unit
V
Vpp
W
°C
°C
V
15 PWR GND
14 OUT
13 +VCC
12 N.C.
11 N.C.
10 MUTE
9 STAND-BY
8 SGN GND
7 SVR
6 IN 2
5 IN 1
4 MONITOR OUT
3 VOLUME CONTROL
2 SW CTL
1 IN 3
D95AU415A
THERMAL DATA
Symbol
Rth j-case
Rth j-amb
Parameter
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
Value
Unit
Typ = 3.8 Max = 4.8 °C/W
max 35 °C/W
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS = 21V, RL = 8; Rg = 50;
Tamb = 25°C; unless otherwise specified.)
Symbol
VS
Iq
DCVOS
VO
PO
Parameter
Supply Voltage Range
Total Quiescent Current
Output DC Offset Referred to
SVR Potential
Quiescent Output Voltage
Output Power
Test Condition
Min.
11
No Input Signal
-400
VS = 28V
THD = 10%; VCC = 28V, RL = 8
THD = 1%; VCC = 28V
THD = 10%; VCC = 21V,
THD = 1%; VCC = 21V,
THD = 10%; VCC = 21V, RL = 4
THD = 1%; VCC = 21V,
THD = 10%; VCC = 18V,
THD = 1%; VCC = 18V
THD = 10%; VCC = 18V, RL = 8
THD = 1%; VCC = 18V
8
6
5
3.5
5
3.9
4.5
3.5
3.5
2.5
Typ.
22
14
10
8
5.5
4
7.5
5.5
6
4.5
3.75
2.85
Max.
35
50
400
2/12
Unit
V
mA
mV
V
W
W
W
W
W
W


Part Number TDA7494
Description 10W AMPLIFIER
Maker ST Microelectronics
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TDA7494 Datasheet PDF






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