TDA7439DS

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Function:	Audio Tone Processor
Applications:	Automotive Audio, Consumer Audio
Number of Channels:	2
Interface:	I²C
Voltage - Supply:	7 V ~ 10.2 V
Operating Temperature:	0°C ~ 70°C (TA)
Specifications:	--
Package / Case:	28-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	28-SO
Base Part Number:	TDA7439

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TDA7439DS is a high-performance audio special purpose application IC. It is mainly used in automotive applications and provides a maximum output power of up to 2x20W with a frequency response of 20Hz-20kHz. TDA7439DS is composed of four independent power amplifier stages and has various features such as separate volume, MAX for each channel, adjustable mono bass and treble, and tone defeat. This IC is suitable for 4-channel car audio system and it also supports muting and standby functions.

The working principle of TDA7439DS is quite simple. It consists of an input stage, a voltage-controlled amplifier stage, PHASE SPLIT adapter, volume control and output stage. The input stage consists of a balanced differential input structure and a low noise preamplifier. The input amplifier then drives the voltage-controlled amplifier (VCA) stage, which is a variable gain amplifier that can be controlled by a voltage signal. The output of the VCA stage is then connected to the PHASE SPLIT adapter, which is used to split the signals into two separate channels, with one driving the main output and the other driving the subwoofer. Finally, the volume control stage is used to adjust the level of the signals according to the user’s desired preferences. Finally, the output stage converts the signals into the desired frequencies and amplitudes for the loudspeakers.

Overall, TDA7439DS is an excellent audio special purpose application IC. Due to its adjustable functions and output power, it is popularly used in car audio systems. Its small size and high performance makes it a great choice for automotive applications. Its simple working principle makes it easy to use and operate, while its adjustable functions make it possible to create a custom audio experience. It is also a cost-effective option as its low manufacturing cost makes it a great choice for high volume production projects. All in all, TDA7439DS is a highly recommended audio special purpose application IC.

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