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TDA7267ASTMN/a13600avai3W MONO AMPLIFIER


TDA7267A ,3W MONO AMPLIFIERTDA7267A®3W MONO AMPLIFIERCAN DELIVER 3W THD 10% 14.5V/8ΩINTERNAL FIXED GAIN 32dBNO FEEDBACK CAPACI ..
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TDA7267A
3W MONO AMPLIFIER
TDA7267A
3W MONO AMPLIFIER
CAN DELIVER 3W THD 10% 14.5V/8Ω
INTERNAL FIXED GAIN 32dB
NO FEEDBACK CAPACITOR
NO BOUCHEROT CELL
THERMAL PROTECTION
AC SHORT CIRCUIT PROTECTION
SVR CAPACITOR FOR BETTER RIPPLE
REJECTION
LOW TURN-ON/OFF POP
STAND-BY MODE
DESCRIPTION

The device TDA7267A is a new technology Mono
Audio Amplifier in PowerDIP package specifically
designed for TV application.
Thanks to the fully complementary output configu- ration the device delivers a rail to rail voltage
swing without need of boostrap capacitors.
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
PIN CONNECTION (Top view)

02468 10 12
ON BOARD HEAT-SINK AREA (sq.cm)
THERMAL RESISTANCE JUNCTION TO AMBIENT(˚C/W) 34
D98AU830
Rth with "on Board" Square Heat Sink vs. Copper
Area
Example of heatsink using PC board copper
TDA7267A

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APPLICATION HINTS:
For 14.5V supply and 8Ω speaker application, its
maximum power dissipation is about 1.8W.
Assumming that max ambient temperature is
70°C, the required thermal resistance of the de-
vice mounted on the PCB with a dissipating area
must be equal to: (150 - 70)/1.8 = 44.4°C/W.
Junction to pin thermal resistance of the package
is about 15°C/W. That means external heat sink
of about 30°C/W is required.
Cu ground plane of PCB can be used as heat dis-
sipating means.
Figure 1. Application Circuit
THERMAL DATA
ELECTRICAL CHARACTERISTICS (Tamb = 25°C; VS = 14.5V; RL = 8Ω; f = 1KHz; unless otherwise

specified.)
TDA7267A

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Figure 2. PCB And Components Layout Of The Application Circuit of Figure 1
Components C2 and C6 must be ignored.
0.1 1 5
Pout(W)
THD+N(%)
Figure 3. Distortion vs Output Power

0.1 1 5
THD+N(%)
Pout(W)
Figure 4. Distortion vs Output Power

Remark: all the characterization curves refer to the electrical test conditions.
TDA7267A

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0.1 1 5
THD+N(%)
Pout(W)
Figure 5. Distortion vs Output Power

4.000 6.000 8.000 10.00 12.00 14.00 16.00 18.00 20.00
Vs(V)
Pout (W)
Figure 6. Output Power vs Supply Voltage
Figure 7. Distortion vs Frequency

456789 1011 121314 151617 185
Iq(mA)
Vs(V)
Figure 8. Quiescent current vs Supply Voltage
Figure 9. Power dissipation vs Output Power
TDA7267A

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POWERDIP 8+8 PACKAGE MECHANICAL DATA
TDA7267A

6/7
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