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TDA7240AHSTN/a2365avai20W BRIDGE AMPLIFIER FOR CAR RADIO


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TDA7240AH
20W BRIDGE AMPLIFIER FOR CAR RADIO
TDA7240A
20W BRIDGE AMPLIFIER FOR CAR RADIO. COMPACT HEPTAWATT PACKAGE . FEW EXTERNAL COMPONENTS. OUTPUT PROTECTED AGAINST SHORT
CIRCUITS TO GROUND AND ACROSS LOAD. DUMP TRANSIENT. THERMAL SHUTDOWN . LOUDSPEAKER PROTECTION. HIGH CURRENT CAPABILITY. LOW DISTORTION/LOW NOISE
DESCRIPTION

The TDA7240A is a 20W bridge audio amplifier IC
designed specially for car radio applications.
Thanks to the low external part count and compact
Heptawatt 7-pin power package the TDA7240A
occupies little space on the printed circuit board.
Reliable operation is guaranteed by a comprehen-
sive array of on-chip protection features. These in-
clude protection against AC and DC output short
circuits (to ground and across the load), load dump
transients, and junction overtemperature. Additio-
nally, the TDA7240A protects the loudspeaker when
one output is short-circuited to ground.
Figure 1: Test and Application Circuit

ABSOLUTE MAXIMUM RATINGS
(*) Internally limited
PIN CONNECTION (Top view)
THERMAL DATA
TDA7240A
ELECTRICAL CHARACTERISTICS (refer to the circuit of fig. 1, Tamb = 25°C, Rth (heatsink) = 4°C/W,
Vs = 14.4V)
(*) B= Curve A (**) B = 22Hz to 22 KHz
Figure 2 : P.C. Board and Components layout of the Circuit of Fig. 1.(1:1scale)
TDA7240A
APPLICATION SUGGESTION
The recommended values of the components are those shown on application circuit of Fig. 1. Different values
can be used, the following table can help the designer.
Figure 4 : Distortion vs. Output Power.Figure 3 : Output Power vs. Supply Voltage.
Figure 6 : Distortion vs. Output Power.Figure 5 : Output Power vs. Supply voltage.
TDA7240A
Figure 8 : Supply Voltage Rejection
vs. Frequency.
Figure 7 : Distortion vs. Frequency.
Figure 10 : Power Dissipation and Efficiency vs.

Output Power.
Figure 9 : Power Dissipation and Efficiency vs.

Output Power.
TDA7240A
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