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TDA7261STN/a17065avai25W MONO AMPLIFIER WITH MUTE/ST-BY


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TDA7261
25W MONO AMPLIFIER WITH MUTE/ST-BY
TDA7261
25W MONO AMPLIFIER WITH MUTE/ST-BY
WIDE SUPPLY VOLTAGE RANGE (UP TO
50V ABS MAX.)
SPLIT SUPPLY
HIGH OUTPUT POWER:
25W @ THD =10%, RL = 8Ω, VS = +20V
NO POP AT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW IQ)
FEW EXTERNAL COMPONENTS
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
DESCRIPTION

The TDA7261 is class AB Audio power amplifier
assembled in the Multiwatt package, specially de- signed for high quality sound application in mono
TV chassis.
Figure 1: Typical Application Circuit
ABSOLUTE MAXIMUM RATINGS
PIN CONNECTION (Top view)
THERMAL DATA
TDA7261
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS + 20V; RL = 8Ω; Rs =50Ω;
f = 1KHz; Tamb = 25°C, unless otherwise specified.)
Note :
(*) FULL POWER up to. VS = ±22.5V with RL = 8Ω and VS = ±16V with RL = 4Ω
MUSIC POWER is the maximal power which the amplifier is capable of producing across the rated load resistance (regardless of non linearity)

1 sec after the application of a sinusoidal input signal of frequency 1KHz.
TDA7261
APPLICATIONS SUGGESTION
(Demo Board Schematic)
The recommended values of the external compo-
nents are those shown on the demo board sche-
matic. Different values can be used: the following
table can help the designer.
MUTE, STAND-BY TRUTH TABLE
TDA7261
Figure 2: Demo Board Schematic
Figure 3: P.C. Board And Component Layout of the Demo Board Schematic (1:1 Scale)
TDA7261
Figure 7: Supply Voltage Rejection vs. FequencyFigure 6: Distortion vs. Output Power
Figure 4: Quiescent Current vs. Supply Voltage Figure 5: Output Power vs Supply Voltage
Figure 8: Attenuation & Total Quiescent Current

vs. Vpin4 Voltage
Figure 9: Power Dissipation vs. Output Power
TDA7261
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