The TDA7297 amplifier IC is a dual-channel class AB amplifier. It is made for high-quality sound in home electronics. Many devices use this audio amplifier IC. These include TVs, portable radios, home theater systems, and Bluetooth speakers. The TDA7297 IC is easy to use and has low distortion. It works well as a stereo amplifier. Makers like this IC because it needs few extra parts. It also gives steady and strong sound output.
| Consumer Electronics Product | Reason for Using TDA7297 IC |
|---|---|
| Televisions (TVs) | Dual-channel stereo sound, class-AB type, works with 6V-18V for medium-power sound |
| Portable Radios | Small 15-pin size, needs few extra parts, saves money |
| Home Theater Systems | High power (up to 30W total), good stereo sound, has mute and standby features |
| Handheld Radios | Small size, few parts needed, easy to use in small devices |
| Bluetooth Speakers | Needs few parts, uses power well, good for battery devices |
Key Takeaways
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The TDA7297 is a class AB amplifier IC with two channels. It gives clear stereo sound with little distortion. Each channel can give up to 15 watts of power.
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It works with power supplies from 6V to 18V. You only need a few extra parts to use it. This makes it simple and cheap to use.
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It has built-in features like mute and standby. It also has short circuit and thermal protection. These features make it safer and save energy.
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The IC comes in a small 15-pin package. It works best with 4-ohm or 8-ohm speakers. This makes it good for home audio, TVs, radios, and portable speakers.
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If you follow the right pin setup and use the suggested parts, it will work well. This also helps stop damage to the IC.
TDA7297 Amplifier IC Overview
Key Features
The TDA7297 amplifier IC is a dual bridge audio amplifier. It gives clear stereo sound for many electronics. This IC uses class AB design, so it is efficient and has low distortion. It can give up to 15 watts for each channel. This makes it good for medium-power audio systems.
Some important features are:
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It works with power from 6V to 18V. This lets you use it in different devices.
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You do not need many extra parts. You do not need SVR capacitors, bootstrap circuits, or Boucherot cells.
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It has mute and standby functions built in. These help save energy and control sound.
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It has short circuit and thermal overload protection. This makes it more reliable.
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The gain is fixed inside the IC. This keeps the sound quality steady.
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The 15-pin Multiwatt package is small. It fits in tight spaces.
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It works with 8 ohm speakers.
Note: The TDA7297 amplifier IC is used in TVs, radios, home theater systems, and portable speakers. Its simple design and safety features make it popular for audio projects.
Main Specifications
The TDA7297 amplifier IC is popular for stereo audio. It can use a wide range of power supplies. It gives strong power for its size. The table below shows the main technical specifications:
| Parameter | Value |
|---|---|
| Amplifier Class | Class-AB |
| Number of Channels | 2 (Stereo) |
| Output Power | 15W per channel |
| Total Output Power | 30W (stereo) |
| Load Impedance | 8 Ohms |
| Power Supply Voltage Range | 6V to 18V |
| Typical Power Supply | 12V to 15V |
| Operating Supply Current | 2A |
| Power Dissipation | 33W |
| Quiescent Current | 50mA |
| Gain | Internally fixed (32 dB) |
| Distortion (THD + Noise) | 0.001 |
| Protection Features | Short-circuit, thermal |
| Package | 15-pin Multiwatt |
| Operating Temperature Range | 0°C to 70°C |
The TDA7297 amplifier IC can give 15W per channel at 8 ohms. It works best with power between 6V and 18V. Most people use 12V or 15V for steady performance. The IC uses about 50mA when not playing sound. This helps save energy.
Datasheet Highlights
The datasheet for the TDA7297 amplifier IC gives important details. It shows the wide power range and strong output. It lists the built-in protection and few extra parts needed. Here are some highlights:
| Feature/Specification | Details |
|---|---|
| Amplifier Type | Class-AB dual bridge amplifier |
| Number of Channels | 2 (Stereo) |
| Output Power | 15W per channel (up to 30W total) |
| Operating Voltage Range | 6V to 18V |
| Package | 15-pin Multiwatt |
| Gain | Internally fixed gain (approx. 32 dB) |
| Protection Features | Short circuit protection, thermal overload protection |
| Additional Functions | Built-in mute and standby functions |
| External Components Needed | Minimal (no SVR capacitor, no bootstrap circuit, no Boucherot cells) |
| Typical Applications | Consumer electronics: TVs, radios, home theater systems, portable devices |
| Audio Load Impedance | Typically 8 Ohms |
| Distortion (THD + Noise) | Very low (around 0.001) |
| Power Dissipation | Approx. 33W |
| Power Supply Rejection | 56 dB |
The datasheet shows the TDA7297 amplifier IC is more flexible than others like TDA7266 or TDA7377. It can use a wider power range and is better for medium-power needs. It also costs less than high-power chips like TDA7294.
You can buy the TDA7297 amplifier IC at good prices. The price goes down if you buy more units. For example:
The TDA7297 amplifier IC works best from 0°C to 70°C. It has thermal protection that turns on if it gets too hot. The datasheet says to use a heatsink for safe use.
Tip: Always read the datasheet for the latest specs and circuit designs. This helps you get the best results and keeps your audio projects safe.
Pin Configuration
The TDA7297 amplifier IC uses a 15-pin Multiwatt package. Understanding the pin configuration helps users connect the IC correctly and avoid mistakes. Each pin has a specific job in the circuit. The pinout shows where to connect the audio signals, power supply, and control features. This section explains the pinout and the function of each pin.
Pinout Diagram
The pinout for the TDA7297 IC is simple to follow. The table below lists each pin number, its name, and its main purpose. This pinout helps users set up the IC for stereo audio projects.
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | OUT1+ | Non-inverting output for channel 1 |
| 2 | OUT1- | Inverting output for channel 1 |
| 3, 13 | Vcc | Power supply voltage (6V to 18V) |
| 4 | IN1 | Input for channel 1 |
| 5 | N.C | No connection |
| 6 | Mute | Mute control pin to silence output |
| 7 | Stand-By | Standby control to reduce power consumption |
| 8 | Pw-Gnd | Ground terminal for power supply |
| 9 | S-Ground | Ground terminal for audio signal |
| 10 | N.C | No connection |
| 11 | N.C | No connection |
| 12 | IN2 | Input for channel 2 |
| 14 | OUT2- | Inverting output for channel 2 |
| 15 | OUT2+ | Non-inverting output for channel 2 |
Tip: Always double-check the pinout before connecting the power supply or speakers. This prevents damage to the IC.
Pin Functions
Each pin in the TDA7297 pin configuration has a clear function. The table below explains what each key pin does in the circuit.
| Pin Name | Function Description |
|---|---|
| Vcc (Pins 3, 13) | These pins connect to the power supply. The IC works with 6V to 18V. |
| IN1 (Pin 4) | This pin receives the audio signal for channel 1. |
| IN2 (Pin 12) | This pin receives the audio signal for channel 2. |
| Mute (Pin 6) | This pin controls the mute function. When active, it silences the output. |
| Stand-By (Pin 7) | This pin puts the IC into standby mode to save power supply energy. |
| Pw-Gnd (Pin 8) | This pin connects to the ground of the power supply. |
| S-Ground (Pin 9) | This pin connects to the ground for the audio signal. |
The TDA7297 pin configuration separates the power supply ground and the signal ground. This design reduces noise and improves sound quality. The mute and standby pins help users control the amplifier easily. The IC uses two pins for the power supply to handle higher current safely.
Note: Using the correct pin configuration ensures the amplifier works well and stays safe. Always connect the power supply and grounds as shown in the pinout.
Circuit Diagram
Basic Application Circuit
A normal TDA7297 circuit diagram shows how to make a simple stereo amplifier. This circuit uses a 12V power supply. It gives 15 watts to each channel with 4-ohm speakers. You do not need a negative voltage output. This makes it easy for small audio projects. The TDA7297 circuit diagram has the IC, input and output connections, and a few extra parts. These parts help the amplifier work well and keep the sound clear.
| Component/Feature | Description/Specification |
|---|---|
| IC | TDA7297 Stereo Dual-Bridge Amplifier |
| Output Power | 15 watts per channel into 4-ohm speakers |
| Power Supply | 12V (range 6V - 18V) |
| Capacitors | 10uF x1, 1uF x1, 224J x2, 104J x1, 470uF x1 |
| Resistors | 10k ohm x2 |
| Terminal Block | 2-Pole Terminal Block x1 |
| Additional Features | Bluetooth, USB, SD card, FM tuner (optional) |
| Protection Features | Short circuit, thermal overload protection |
| Design | Compact and lightweight |
The left and right audio inputs connect to the IN1 and IN2 pins. The speakers connect to the OUT1+/- and OUT2+/- pins. The power supply connects to the Vcc pins. The grounds connect to the Pw-Gnd and S-Ground pins. The mute and standby pins use simple resistor and capacitor networks. These control the amplifier’s functions.
Component Selection
Picking the right parts for the TDA7297 circuit helps it work safely and sound good. The IC only needs a few extra parts. This makes the design simple and small.
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Use two 10kΩ resistors for the mute and standby pins. These resistors make a voltage divider and help control the amplifier’s state.
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Add a 10µF capacitor to keep the voltage steady for mute and standby. This capacitor also helps stop noise when turning the amplifier on or off.
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Put a 4.7µF electrolytic capacitor in series with each audio input. This blocks DC voltage and protects the amplifier.
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Use a 47kΩ resistor in series with each input to set the input impedance.
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Add bypass capacitors, like 1µF or 0.1µF, near the power supply pins. These capacitors help filter out noise and keep the circuit stable.
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Use a 470µF capacitor at the power supply input. This smooths out voltage changes and protects the IC from power surges.
The TDA7297 has a fixed gain of 32dB. You do not need extra gain stages. The circuit can use 4-ohm or 8-ohm speakers. The power output will change with the speaker’s resistance. The IC works best with a 12V power supply. It can also handle voltages from 6V to 18V.
Tip: Always use good capacitors and resistors. This gives the best sound and helps your amplifier last longer.
Integration Tips
Good layout and assembly help the TDA7297 circuit work well and avoid noise. Here are some important tips:
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Keep the power ground and audio signal ground apart. Connect them at only one point to lower noise.
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Put bypass capacitors close to the IC’s power supply pins. This helps block high-frequency noise.
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Do not use ground fill on the PCB. It can add unwanted capacitance and hurt stability.
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Follow the layout example in the TDA7297 datasheet. This design has been tested and works well.
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Use a PCB design tool to lay out the circuit. Place all parts as shown in the schematic and check their direction.
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Solder small parts first, then bigger ones. Make sure all solder joints look clean and shiny.
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Attach a heatsink to the IC to stop overheating, especially at high power.
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Connect the audio input and speaker output wires carefully. Double-check all connections before turning on the power.
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Test the circuit with a multimeter for shorts or open circuits before use.
The mute function in the TDA7297 is built into the IC. It lets users silence the audio output without extra parts. This feature saves energy, stops pops and clicks during power-up, and protects the speakers. The mute pin works with a simple resistor and capacitor. It is easy to use in any circuit.
Note: Always check the power supply voltage and speaker connections before using the amplifier. This keeps the circuit safe and helps it last longer.
TDA7297 Equivalent
Alternative ICs
Sometimes, people need a different IC instead of the TDA7297. Some chips can do the same job as the TDA7297. These chips work well and have similar features. Designers pick these when the TDA7297 is not in stock. They also use them to see which one is better.
Common tda7297 equivalent ICs are:
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TDA7266
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TDA7265
These ICs have pins in almost the same places. They work great in stereo audio amplifier circuits. You can use them in home audio, radios, and small speakers.
Note: Always look at the datasheet before using a new IC. Even small changes in voltage or power can change how it works.
Comparison Table
The table below helps you see the differences between the TDA7297 and other ICs. It shows which chip might be best for your project.
| Feature / IC | TDA7297 | TDA7266 | TDA7265 | TDA7377 | TDA7294 | TDA2030 |
|---|---|---|---|---|---|---|
| Power Output | 15W/ch (30W total) | 7W/ch | 7W/ch | Car audio, varies | Higher, for big systems | Lower, basic use |
| Operating Voltage | 6.5V–18V | Lower range | Lower range | Narrower range | Higher voltages | Less flexible |
| Application | Stereo, home/car audio | Small, low voltage | Small, low voltage | Car audio | High power systems | Basic audio |
| Built-in Features | Mute, standby, protection | Stable, fewer features | Stable, fewer features | Car durability | High quality, more features | Basic features |
| Sound Quality | Clear, good detail | Good for light music | Good for light music | Suits car sound | Superior | Basic |
| Package | 15-pin compact | Varies | Varies | Varies | Varies | Varies |
TDA7266 and TDA7265 work well in small audio systems. They use less voltage and give less power than the TDA7297. The TDA7377 is best for car audio. The TDA7294 is good for high-power systems. The TDA2030 is for simple, low-power uses.
Tip: For most medium-power stereo projects, the TDA7297 or its equivalents are a good choice. They give enough power, have nice features, and sound good.
Applications
Typical Uses
The TDA7297 IC appears in many audio devices. Engineers choose this IC for its simple design and strong sound output. It works well in products that need medium power and clear stereo sound. The IC often fits into:
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Home stereo systems
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Television audio boards
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Portable Bluetooth speakers
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DIY radio receivers
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Small public address systems
A home stereo system uses the TDA7297 to drive two speakers. The IC connects to a single power supply, which makes the design easy. In a television, the IC boosts the sound from the main board to the speakers. Bluetooth speakers use this IC because it needs few extra parts and works with battery power supply. Many DIYers build radio receivers with this IC for clear sound. Small public address systems also use the TDA7297 for voice amplification.
| Device Type | Why Use TDA7297? |
|---|---|
| Home Stereo | Clear stereo sound, easy circuit |
| TV Audio Board | Simple power supply, compact |
| Bluetooth Speaker | Works with battery, efficient |
| DIY Radio | Good sound, few extra parts |
| PA System | Reliable, easy to set up |
Tip: Always match the speaker and power supply to the IC’s limits for best performance.
Project Ideas
Students and hobbyists can use the TDA7297 IC in many fun projects. These projects help them learn about audio electronics and circuit design. Some ideas include:
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Mini Stereo Amplifier
Build a small amplifier for a computer or phone. Use a 12V power supply and two speakers. -
Portable Bluetooth Speaker
Combine a Bluetooth module with the TDA7297. Power the circuit with a rechargeable battery. -
DIY Radio Receiver
Connect the IC to a simple radio tuner. Use a single power supply for easy setup. -
Classroom PA System
Make a basic microphone amplifier for announcements. The TDA7297 gives enough volume for a small room. -
TV Sound Booster
Add this IC to an old TV to improve its sound. Use the TV’s power supply for the circuit.
These projects show how flexible the TDA7297 IC can be. Each idea uses a simple circuit and a single power supply, making them great for beginners.
The TDA7297 amplifier IC is great for medium-power stereo projects. It needs only a few extra parts, so building is easy and reliable. The mute, standby, and protection features are built in. These features help keep the circuit safe and save energy. It uses class-AB design and has two channels. This gives clear sound with little distortion. The IC is small and works with many voltages. This makes it good for lots of electronics.
If you pick between the TDA7297 and other ICs, look at some things. Check the voltage range, output power, safety features, and package type. Reading the datasheet helps you choose the best IC for your project.
FAQ
What is the maximum power output of the TDA7297 IC?
The TDA7297 IC can deliver up to 15 watts per channel. When used in stereo mode, it provides a total of 30 watts. This power level works well for medium-sized speakers in home audio systems.
Can the TDA7297 IC run on a 9V battery?
Yes, the TDA7297 IC operates with voltages from 6V to 18V. A 9V battery can power the IC, but the output power will be lower. For best results, use a 12V or 15V supply.
Does the TDA7297 need a heatsink?
The TDA7297 IC produces heat during operation. A heatsink helps keep the IC cool and prevents overheating. Using a heatsink is important, especially when running at higher power levels.
How does the mute function work on the TDA7297?
The mute pin silences the audio output. Users can activate mute by applying the correct voltage to the mute pin. This feature helps prevent pops and clicks when turning the amplifier on or off.
What types of speakers work with the TDA7297 IC?
The TDA7297 IC works best with 4-ohm or 8-ohm speakers. Most home audio and portable speakers use these values. Always match the speaker impedance to the IC’s specifications for safe operation.
Written by Jack Elliott from AIChipLink.
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