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TDA7256STN/a1280avai30W BRIDGE CAR RADIO AMPLIFIER


TDA7256 ,30W BRIDGE CAR RADIO AMPLIFIERTDA7256 30W BRIDGE CAR RADIO AMPLIFIERNO AUDIBLE POP DURING MUTE ANDSTANDBY OPERATIONSMUTING TTL C ..
TDA7261 ,25W MONO AMPLIFIER WITH MUTE/ST-BYTDA726125W MONO AMPLIFIER WITH MUTE/ST-BYWIDE SUPPLY VOLTAGE RANGE (UP TO50V ABS MAX.)SPLIT SUPPLYH ..
TDA7262 ,20+20W STEREO AMPLIFIER WITH STAND-BYTDA726220+20W STEREO AMPLIFIER WITH STAND-BYWIDE SUPPLY VOLTAGE RANGEHIGH OUTPUT POWER28+28W TYP. M ..
TDA7263 ,12+12W STEREO AMPLIFIER WITH MUTINGTDA726312 +12W STEREO AMPLIFIER WITH MUTINGWIDE SUPPLY VOLTAGE RANGEHIGH OUTPUT POWER12+12W @ V =28 ..
TDA7263L ,6+6W STEREO AMPLIFIER WITH MUTINGFEATURES Figure 1. Package■ WIDE SUPPLY VOLTAGE RANGE■ HIGH OUTPUT POWER6+6W @ V =20V, R = 8Ω , THD ..
TDA7263M ,12 + 12W STEREO AMPLIFIER WITH MUTINGTDA7263M12 +12W STEREO AMPLIFIER WITH MUTINGWIDE SUPPLY VOLTAGE RANGEHIGH OUTPUT POWER12+12W @ V =2 ..
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TDA7256
30W BRIDGE CAR RADIO AMPLIFIER
TDA7256
30W BRIDGE CAR RADIO AMPLIFIER AUDIBLE POP DURING MUTE AND
STANDBY OPERATIONS
MUTINGTTL COMPATIBLE
VERY LOW STANDBY CONSUMPTION
PROGRAMMABLE TURN ON DELAY
DIFFERENTIAL INPUT
SHORT CIRCUIT PROTECTIONS: SHORT- OUT TO GROUND- OUT TOVS
OTHER PROTECTIONS: Load dump voltage surge Loudspeaker DC current Very inductive load Overrating temperature Openground
DESCRIPTION

The TDA7256isa class AB fully protected bridge
power amplifier, designed for car radio applica-
tions. The high current capability allowsto drive
low impedance loads (upto 2Ω). The differential
inputs availability makesit particularlysuitablefor
boosters and active loudspeakersapplications.
October 1998
BLOCK DIAGRAM
MULTIWATT11
ORDERING NUMBER:
TDA7256
1/10
PIN CONNECTION (Top view)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Test Conditions Unit
Operating Supply Voltage 18 V DC Supply Voltage 28 V Peak Supply Voltage (for 50ms) 40 V Output Peak Current (non repetiitivet= 0.1ms) internally limited Output Peak Current Repetitivef> 10Hz 5.5 A
Ptot Power Dissipation (Tcase= 85°C) 36 W
Tstg,TJ Storage and Junction Temperature Range -40to +150 °C
THERMAL DATA
Symbol Description Value Unit

Rth j-case Thermal Resistance Junction-case Max 1.8 °C/W
TDA7256

2/10
ELECTRICAL CHARACTERISTICS (VS= 14.4V, RL =4Ω,f= 1KHz; Tamb =25°C, unless otherwise
specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
Supply Voltage 8 18 V Quiescent Drain Current 80 150 mA Input Resistance 50 KΩ
CMR Common Mode Rejection f= 1KHz,Vin= 100mV 60 dB
VOS Output Offset Voltage 150 mV Output Power d= 10% =4Ω= 3.2Ω =2Ω 22 Distortion Po= 0.1Wto 13W 0.05 0.5 % Voltage Gain (CL) 36 dB Total Input Noise Voltage Rg= 10KΩ,B= 22Hzto 22KHz 3 10 μV
SVR Supply Voltage Rejection Rg= 10KΩ,Vr= 1Vrms,= 300Hz 60 dB
Muting Attenuation Vref= 1Vrms,= 100Hzto 10KHz dB
Muting-in Threshold Voltage Pin1 2.4 V
Muting-out Threshold Voltage Pin1 0.8 V
Stand-by Attenuation Vref= 1Vrms 60 dB
Stand-by Current Consumption 100 μA
TSD Thermal Shut-down Junction
Temperature
145 °C
Figure1:
Test and Application Circuit
TDA7256

3/10
Figure4: Output Power vs. Supply VoltageFigure3: Drain Current vs. Supply Voltage
Figure2:
P.C. and Layoutof the fig.1(1:1 scale)
TDA7256

4/10
Figure 10: Distortion vs. Frequency
Figure5:
Output Power vs. Supply Voltage Figure6: Output Power vs. Supply Voltage
Figure8:
Distortion vs. Output Power
Figure9:
Distortion vs. Output Power
Figure7:
Distortion vs. Output Power
TDA7256

5/10
Figure 16: PowerDissipation& Efficiencyvs.
Output PowerFigure 15: Power Dissipation& Efficiency vs.
Output Power
Figure 12:
SVR vs. Frequency
Figure 13:
CMRR vs. Frequency
Figure 11:
Distortion vs. Frequency
Figure 14:
Power Dissipation& Efficiency vs.
Output Power
TDA7256

6/10
ic,good price


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