TDA7297 Amplifier: Datasheet, Circuit, Alternatives

TDA7297 Symbol

TDA7297 Footprint

TDA7297 3D Model

The TDA7297 is a dual bridge amplifier specially designed for TV and Portable Radio applications. It suggests two amplifier circuits based on microprocessor applications and low-cost applications

STMicroelectronics TDA7297 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics TDA7297.

• WIDE SUPPLY VOLTAGE RANGE (6V -18V)

• MINIMUM EXTERNAL COMPONENTS

– NO SVR CAPACITOR

– NO BOOTSTRAP

– NO BOUCHEROT CELLS

– INTERNALLY FIXED GAIN

• STAND-BY & MUTE FUNCTIONS

• SHORT CIRCUIT PROTECTION

• THERMAL OVERLOAD PROTECTION

• Used for Audio signal Amplification

• Suitable for medium power amplification

• Capable of operating on dual/split power supply

• Stereo audio application

On the datasheet, the TDA7297 suggests two amplifier circuits based on microprocessor applications and low-cost applications, both these circuits will enhance standby and mute function at the TDA7297 amplifier IC.

TDA7297 Microprocessor Application

TDA7297 Stand-alone Low-cost Application

TDA7297 is a class AB two-channel audio amplifier. It comes in a compact 15-pin package and can operate in voltages from 6V to 18V, making it suitable for use in consumer electronics such as televisions, radios, and home theatres. Audio amplifier circuits can also be made using simple operational amplifiers, but if you need a higher volume, loud enough for the room, then this power audio amplifier is the best choice. This IC provides up to 30W (15+15) output, so you can run two 15W 4-ω speakers for stereo audio quality.

TDA7297 is a popular and easy to use audio amplifier IC. The IC is a dual-bridge amplifier, which means it requires left and right audio inputs to provide stereo output. The output is also divided into channels 1 and 2, each capable of driving 15W speakers. Each channel also has an inverting and in-phase output for connecting the positive and negative terminals of the speaker. A typical application is shown below.

TDA7297 Typical Application Circuit

As you can see, the IC requires a minimal number of components, such as some additional capacitors and resistors, allowing designers to easily apply it to compact portable applications such as handheld radios or Bluetooth speakers. In addition, the minimum requirements for components also reduce BOM costs. The IC also comes with a built-in mute function and standby function. The mute feature eliminates the need for add-ons, while standby can be used to save batteries. Typically, microprocessors are used to control mute and standby functions based on user input.

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