TDA7496 Stereo Amplifier With DC Volume Control

Audio amplifier circuit shown here is a 5W stereo class AB power amplifier based on the TDA7496 IC designed for high quality sound, TV applications atau keperluan audio lainnya.

The power supply needed must deliver 22 volts for 8 ohms load impedance and 12 volts for 4 ohms load impedance . The maximum output power which can be obtained with this audio IC is around 5.5 watts on 8 ohms load with 10 % THD and 4 watts with 1 % THD.

TDA7496 Stereo Amplifier Circuit

Main features of the TDA7496 include linear volume control ,Stand-by and Mute functions , 2 x 5Watt output power, short circuit protection , thermal overload protection.

TDA7496 Pin Out

Maximum ratings of TDA7496 IC

• Supply Voltage: 35 V
• Maximum Input Voltage: 8 Vpp
• Total Power Dissipation (Tamb = 80°C): 15 W
• Operating Temperature: 0 to 70 °C
• Storage and Junction Temperature: -40 to 150 °C
• Volume CTRL DC voltage: 7 V

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Simple Audio Amplifier Based LA4460 IC

A simple audio amplifier circuit can be designed using the LA4460 IC . This circuit is very simple and require few external electronic components . The LA4460 IC is actually used for car radio or car audio power amplifier and may deliver output power up to 12 W. But in this circuit is only used 5W.

This amplifier circuit can be used for car radio applications , TV , or some other audio circuits that don’t require huge power .

LA4460 Simple Audio Amplifier Circuit

Notes:

• Use 12VDC to supply the circuit.
• Mount the LA4460 IC  with an appropriate heat sink

Some of most important features of the LA4460 IC are : reverse connection protection , muting function,thermal runaway protection circuit ,over voltage & surge voltage protection circuit, load short-circuit current limiting protection circuit, output pins DC short-circuit protection.

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TDA1521 Stereo Amplifier Circuit

Using only active component Philips TDA1521 monolithic integrated circuit, can be designed a small and compact stereo amplifier is powerful but can easily be used to replace your broken amplifier or new construction, or to make an active speaker, in all cases combined with a preamplifier. With remarkable features make it the true Hi-Fi amplifier

The amplifier circuit is designed for both symmetrical and asymmetrical power supply systems. An output power of 2 ´ 12 watts (THD = 0,5%) can be delivered into an 8 W load with a symmetrical power supply of ± 16 V. The gain is fixed internally at 30 dB. Internal gain fixing gives low gain spread and very good balance between the amplifiers (0,2 dB).

TDA1521 Stereo Audio Amplifier Circuit

TDA1521 Pinout

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TDA7241 - BTL Audio Amplifier Circuit

Here very simple audio amplifier circuit can be designed using the TDA7241. this circuit require minimum voltage 14.4 volt and maximum voltage 18 volt DC. Max power output 20 Watt with 4 Ohm impedance. this circuit can use to Amplifiy the audio device.

TDA7241  - BTL  Audio Amplifier Circuit

TDA724 Pinout

The audio amplifier circuit is designed in bridge (BTL) mode configuration and will provide a maximum output power of 20 watts on a 4 ohms load. The maximum output power can be obtained using a 2 ohms load , in this case output power will be around 26 watts . Also you can use a 8 ohms load , but in this case , output power will be around 12 watts.

Note:

• Use 12V - 15V DC for powering the circuit.
• Fit the TDA724 IC to a proper heatsink.

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30W Audio Amplifier by TDA7296 IC

This audio power amplifier circuit is an other power amplifier based on TDA IC. The TDA7296 audio amplifier is a is a class AB amplifier which can be used in Hi-Fi applications (Home Stereo, self powered loudspeakers, Topclass TV). The maximum output power obtained amplifier circuit is around 60 watts .

TDA7296 - 30W Audio Amplifier Circuit

TDA7296 Pinout

The maximum power 60 watts is obtained with a power supply around VS = ± 29V on 8 ohms load impedance ; VS = ± 24V on 6 ohms load impedance ; VS = ± 22V on 4 ohms load impedance with 10% total harmonic distortions .

Using a power supply around VS = ± 24V on 8 ohms load impedance ; VS = ± 21V on 6 ohms load impedance ; VS = ± 18V on 4 ohms load impedance the maximum power delivered by amplifier is 30W but the total harmonic distortion is around 0.5% . Main features of this amplifier circuit are: high output power, high operating voltage 30V, muting and stand-by functions , thermal shutdown and short circuit protections

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BTL Amplifier Using LA4550 IC

This LA4550 amplifier circuit is wired in bridge mode (BTL mode). For stereo application, two identical amplifier modes have to be built according to the circuit diagram. The LA4550 can be operated from 12 Vdc and can deliver 4W of output power into an 8 ohm speaker.

Circuit of BTL  Amplifier  Using LA4550

LA4550 IC

LA4550 is a 2 channel audio frequency power amplifier IC specifically designed for radio, tape-recorder use etc. The features of LA4550 are low quiescent current, built in 2 channels for stereo and bridge mode operation, excellent ripple rejection, good channel separation, negligible pop-up noise during power ON/OFF.

Note:

• Maximum possible supply voltage is 13V.
• An optional 10K POT connected in series to the input line can be used as the volume control.

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