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
Introduction to TDA7294
- 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.
What is the maximum voltage for TDA7294?
- ±50V
That is all about the TDA7294 all details has explained if you have any queries ask on the comments. Thanks for reading have a good day