SGS Thomson Microelectronics TDA7374-B Datasheet
TDA7374B
DUAL BRIDGE AUDIO AMPLIFIER FOR CAR RADIO
MINIMUMEXTERNAL COMPONENTCOUNT
NO BOOTSTRAPCAPACITORS
NO BOUCHEROTCELLS
CLIP DETECTOR OUTPUT
HIGHOUTPUT POWER
FIXED GAIN
VERYLOW STAND-BYCURRENT (1µA typ)
NO SWITCH ON/OFF NOISE
PROTECTIONS:
OUTPUT AC/DC SHORT CIRCUIT TO GND
ANDTO V
S
VERYINDUCTIVE LOADS
OVERRATINGCHIP TEMPERATURE
LOADDUMP VOLTAGE
FORTUITOUS OPEN GND
REVERSEBATTERY
ESD
DESCRIPTION
The TDA7374B is a new technology class AB
Audio Dual Bridge Power Amplifier in Multiwatt
packagedesignedfor car radio applications.
Thanks to the fully complementaryPNP/NPN output configuration the high power performances of
the TDA7374B are obtained without bootstrap capacitors.
April 1995
TEST AND APPLICATION CIRCUIT
MULTIWATT15
ORDERING NUMBERS: TDA7374BV
1/13
PIN CONNECTION (Top view)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
S
DC Supply Voltage 28 V
V
OP
Operating Supply Voltage 18 V
V
PEAK
Peak Supply Voltage (t = 50ms) 50 V
I
O
Output Peak Current (not rep. t = 100µs) 4.5 A
I
O
Output Peak Current (rep. f > 10Hz) 3.5 A
P
tot
Power Dissipation (T
case
=85°C) 36 W
T
stg,Tj
Storage and Junction Temperature -40 to 150 °C
THERMAL DATA
Symbol Description Value Unit
R
th j-case
Thermal Resistance Junction-case Max 1.8 °C/W
TDA7374B
2/13
ELECTRICAL CHARACTERISTICS (Referto the test circuit;VS=14.4V; RL=4Ω,T
amb
=25°C,
f = 1kHz, unlessotherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
Supply Range 8 18 V
I
d
Total Quiescent Drain Current RL= ∞ 150 mA
P
O
Output Power RL=4Ω; THD = 10% 17 21 W
d Distortion R
L
=4ΩPO= 0.1 to 10W 0.5 %
CT Cross-Talk f = 1kHz
f = 10kHz
65
55
dB
dB
R
IN
Input Impedance 10 KΩ
G
V
Voltage Gain 26 dB
G
V
Voltage Gain Match. 1 dB
E
IN
Input Noise Voltage Rg= 0 to 10kΩ Weight A
22Hz to 22KHz
3.5
10
µV
µV
SVR Supply Voltage Rejection R
g
= 0; f = 100Hz
f = 10kHz
48
55
dB
ASB Stand-by Attenuation 60 dB
I
SB
ST-BY Current 1 µA
V
SB ON
ST-BY On Threshold Voltage 1.5 V
V
SB OFF
ST-BY Off Threshold Voltage 3.5 V
V
OS
Output Offset Voltage 200 mV
I
CD OFF
ClippingDetector ”OFF”
Output Average Current
THD = 1% (*) 100 µA
I
CD ON
ClippingDetector ”ON ”
Output Average Current
THD = 10% (*) 190 µA
(*) Pin 10 Pulled-up to 5V with 10kΩ;RL=4Ω
TDA7374B
3/13
TEST AND APPLICATION CIRCUIT
P.C. BOARDAND COMPONENTLAYOUT (1:1 scale)
B
TDA7374B
4/13
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