Table of Contents
TDA7297 with Bluetooth power amplifier circuit using Bluetooth module MH-M18, for smartphone a pc application. With power supply for the Bluetooth module using a 78l05 SMD voltage regulator and a filter with inductor and capacitor.
The TDA7297 integrated amplifier. The circuit uses two large filters, with a 78L05 voltage regulator providing 5V power to the Bluetooth module. The 5V power supply uses CLC filtering to ensure a purer power supply. The signal input does not have an equalization circuit.
Schematic TDA7297 + MH-M18 Bluetooth 4.2 power amplifier circuit
About ic tda7297 15 W + 15 W dual bridge amplifier
The IC TDA7297 is a dual bridge amplifier integrated circuit used in audio amplification applications. It is designed to deliver high-quality audio output with a power rating of up to 15 watts per channel. The TDA7297 is known for its low distortion and high signal-to-noise ratio, making it ideal for audio systems requiring clear and powerful sound reproduction. This IC features a built-in thermal shutdown and short-circuit protection, ensuring safe operation even under demanding conditions. Its compact size and ease of use make it popular for various audio applications, including portable speakers, car audio systems, and home theater setups. Overall, the IC TDA7297 offers excellent audio performance, reliability, and versatility, making it a preferred choice among audio enthusiasts and professionals.
About Bluetooth module MH-M18
The Bluetooth module MH-M18 is a highly versatile and reliable device that allows for wireless communication between various electronic devices. This module operates on Bluetooth version 5.0, providing a stable and efficient connection with a range of up to 10 meters. With its compact size and easy-to-use interface, the MH-M18 module integrates seamlessly with a wide range of applications, from home automation systems and wireless speakers to automotive electronics and wearable devices. It supports both classic Bluetooth and BLE (Bluetooth Low Energy) modes, offering flexibility for different connectivity requirements. The MH-M18 module also features a built-in antenna, which ensures a strong and stable signal transmission, and it can be easily powered with a supply voltage between 3.3V and 5V, making it compatible with various power sources. Overall, the Bluetooth module MH-M18 is an excellent choice for anyone looking to incorporate wireless connectivity into their electronic projects.
|Function / Model||M18 (this item)||M28||M38|
|Audio headphone jack||×||√||×|
|Lithium battery powered||√||√||√|
|Support USB sound card, free drive||×||×||√|
|Bluetooth version||Bluetooth V4.2|
|Support Bluetooth protocol||HFPV1.7, A2DPV1.2, AVRCPV1.5, AVCTPV1.2, AVDTPV1.2|
|Format support||Support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo two-channel output|
|Broadcast status not connected||5.5MA|
|Connection working status||20MA|
|Transmission distance||20 meters (empty or low interference environment)|
|Operating temperature||-40 °C to +85 °C|
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Bom TDA7297 + MH-M18 Bluetooth 4.2 power amplifier circuit
|9013||Q12||SOT-23-3 – NPN transistor||1|
|78L05||U6||SOT-89-3 – 5V voltage regulator||1|
|BT-M18||U7||MH-M18 – Bluetooth module||1|
|LED-TH-3mm_G||LED||Led 3 mm Green||1|
|Reverse polarity protection||D4||DO-214 – M4||1|
|DG127-5.08-02P-14-02A(H)||LOUT,ROUT||Connector 2 pin||2|
|Play||KEY1||Tactile Switch – K2-1107ST-A4DW-06||1|
|Next/V+||KEY2||Tactile Switch – K2-1107ST-A4DW-06||1|
|Prev/V-||KEY3||Tactile Switch – K2-1107ST-A4DW-06||1|
|3F07||CN1||PJ3F07-5P – 3.5 mm audio connector||1|
|DC-005A-20A||DC||Power supply connector||1|
Download files, links, and notes for TDA7297 + MH-M18 Bluetooth 4.2 power amplifier circuit
Download PCB in Gerber, PDF, PNG and SVG
- Buy MH-M18 Bluetooth module
- Manual pdf datasheet MH-M18 Bluetooth module
- PDF Datasheet IC TDA7297 – 15 W + 15 W dual bridge amplifier
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