Introduction to TDA7294

Hello, readers welcome to new tutorial. Today we will discuss Introduction to TDA7294. It is a monolithic IC circuit that comes in fifteen multi-watt packaging designed for audio class AB amplifiers. It is used in different circuits like Hi-Fi field applications like stereo of home-based speakers of self-powered and Tv. its features of different volt ranges for larger output current ability it is configured to give larger power for eight and four-ohm loads.

Its already built muting function having a turn-on delay make the distant operation with less switching on-off noise. We will cover its basic features and some other parameters. So let’s get started Introduction to TDA7294

Table of Contents

The TDA7294 is an integrated sound amplifier circuit having less price and used for power handling features about one hundred watts.

It is a MOS power amplifier that can operate on the eighty-volt input volts and give the output current till plus-minus amperes.
Its matte lip coat is linked to the -Vs pin outer.

TDA7294 Features

Its main features are explained here
It comes with a thermal shutdown

Used for short circuit protection
offer the low noise operation
It has less distortion in circuits
It has less value of Boucherot cells
It does not has noise during on and off of the switch
It comes with DMOS power storing ability
Its operating volts range is plus-minus forty volts
The base current is five hundred nanoamps
its open-loop volt gain is eighty decibels
Its closed-loop volts gain is at least twenty-four decibels and at its highest forty decibel
Its voltage range is least plus-minus ten and highest plus-minus forty volts
Storage and junction temperature is one fifty centigrade
Higest operating ambient temperature is zero to seventy centigrade

TDA7294 Pinout

its pin description is given here
Pin 1 is a stand-by ground its output linked to the ground terminal
Pin2 is inverting input
Pin 3 is non-inverting input
Pin 4 is SVR used for power noise rejection
Pin 5 is not used
Pin 6 bootstrap employed for steo up charging
Pin 7 is the positive supply
Pin 8 is a negative supply
Pin 9 is standby-mode use for low-power mode
Pin 10 is mute use to disable the noise of the output
Pin 11, 12 not used
Pin 13 positive power given here
Pin 14 is the output pinout
Pin 15 is the negative power supply

TDA7294 Applications

Its common applications are discussed here
Used for subwoofer
Used in stereo system
Used for class AB amplifier
Used for radio of cars and hi-fi circuits

TDA7293 VS TDA7294

TDA7293 comes with a similar conversion rate to TDA294, but it has a large voltage supply value and a high power dual 50V DC supply power that provides users with a high dynamic range and output power.
The load of 8 ohms with a 40V dual power supply can produce an average power output of 100 watts.
If voltage increases to 50V or load is reduced to 4 ohms, output will increase according to the features of TDA293.
Dual 28 V AC voltage is used for selection of accurate transformer causes about 40 volts after rectification for selection of accurate transformer. Prove 40 V voltage after rectification process and filtering.
The voltage can increase. Due to the change of grid voltage, it is referred to as reducing to 50V, which helps circuits to work in a stable way.

Feature	TDA7293	TDA7294
Technology	Multipower BCD	—
Operating Voltage Range	High	Super High
Output Power	High	Up to 100W
Power Stage	DMOS	High Output DMOS
Distortion	Little	Low
Noise	Low Sound	Low Noise
Stand-by/Muting Functions	Yes	Yes
Thermal Shutdown	Yes	Yes
Short-Circuit Protection	Yes	Yes
Clip Detector	Yes	—
Modularity	Yes	—
ON/OFF Switch Noise	No Sounding Switch	No Switch ON/OFF Noise
Boucherot Cells	—	None

How many watts is a TDA7294 output?

Dimensions L x W x H	‎5.6 x 5.1 x 2.5 Centimeters
Speakers Maximum Output Power	‎100 Watts
Wattage	‎100 Watts
Power Source	‎Corded Electric

How to test TDA 7294?

For testing TDA7294 connect the power supply and load with the amplifier. Also, make the connection of the temperature sensor with an amplifier to monitor temperature and run it.