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TDA2050 Lm1875 stereo power amplifier DIY, With a very well crafted PCB, an excellent ground plan, for better audio quality and low noise. It can use various integrated circuits such as TDA2030, TDA2030A, LM1875, TDA2040, TDA2030L and TDA2050L, TDA2030AL.
Amplifier project aimed at using TDA2050, LM1875, TDA20320 or TDA2040 chips, some of these chips may be obsolete from the original manufacturer, but can still be obtained from other reliable manufacturers such as UTC (TDA2050L), newer versions like TDA2030A. The LM1875 is still manufactured by Texas Instruments.
Some Chinese manufacturers also have their versions, such as HG Semi. When assembling the circuit of this board, pay attention to using original components, ensuring sound quality. If possible, also pay attention to the quality of the electrolytic capacitors used.
Schematic TDA2050 or Lm1875 stereo power amplifier DIY
About IC TDA2050
The IC TDA2050 is a high-performance audio amplifier that is commonly used in audio applications such as home and car audio systems. This integrated circuit is capable of delivering up to 32 watts of output power with low distortion, making it ideal for use in high-fidelity audio systems. The TDA2050 features short-circuit and thermal protection, ensuring the safety and longevity of the amplifier. Its simple design and easy-to-use setup make it a popular choice among audio enthusiasts and hobbyists looking to build their own audio amplifiers. Overall, the TDA2050 is a reliable and versatile IC that delivers high-quality audio performance in a compact package.
About IC TDA2030
The IC TDA2030 is a popular audio amplifier integrated circuit known for its high power output and low distortion. It is commonly used in audio amplifiers, home theater systems, and car audio systems due to its ability to deliver up to 18 watts of power with a low harmonic distortion level. The TDA2030 operates on a single power supply and has a wide frequency response range, making it suitable for a variety of audio applications. It is also known for its thermal and short-circuit protection features, ensuring the safety and reliability of the circuit. Overall, the TDA2030 is a versatile and efficient integrated circuit that is widely used in the audio industry.
About IC LM1875
The IC LM1875 is a high-performance audio amplifier integrated circuit that is commonly used in audio applications such as stereo amplifiers and home theater systems. It operates on a wide supply voltage range and delivers a maximum output power of 20 watts per channel. The LM1875 features high audio fidelity, low distortion, and high signal-to-noise ratio, making it a popular choice for audio enthusiasts and DIY hobbyists looking to build their own amplifiers. With its simple design and robust performance, the LM1875 is a reliable and cost-effective solution for amplifying audio signals with high quality and clarity.
About IC TDA2040
The IC TDA2040 is a class AB audio amplifier integrated circuit known for its high output power and low distortion. With a maximum power output of 20 watts, the TDA2040 is commonly used in audio applications such as stereo amplifiers, car amplifiers, and home theater systems. It operates on a single power supply voltage ranging from 6 to 36 volts, making it versatile and suitable for a wide range of audio amplification needs. The TDA2040 also features short circuit and thermal protection, ensuring the safety and longevity of the amplifier. Overall, the TDA2040 is a reliable and efficient audio amplifier IC that delivers high-quality sound performance.
Power supply according to the chosen power supply and IC configuration.
DC power supply voltage:
- TDA2030/ TDA2040 — +/-12V to ±18V
- LM1875/TDA2050 — ±12V to ±25V
Maximum output power Stereo:
- 2x 18W with TDA2030
- 2x 25W with TDA2040
- 2 x 32W with TDA2050
- 2 x 30W with LM1875
BOM TDA2050 or Lm1875 stereo power amplifier DIY
| Name | Value | Description | Quantity |
| Resistors | |||
| R1,R2 | 1M | Brown, black, yellow, gold | 2 |
| R3,R4,R5,R6,R9,R10,R11,R12 | 22K | red, red, orange, gold | 8 |
| R7,R8 | 1K | Brown, black, red, gold | 2 |
| R13,R14 | 3,9 | Orange, white, gold, gold | 2 |
| Capacitors | |||
| C1,C2 | 2.2uf | Film capacitor | 2 |
| C3,C4 | 22uF/25V BP | Electrolytic capacitor NP | 2 |
| C5,C6,C7,C8,C15,C16 | 2200uF/25V | Electrolytic capacitor | 6 |
| C9,C10,C11,C12 | 100n (104) | Film capacitor | 4 |
| C13,C14 | 220n (224) | Film capacitor | 2 |
| Semiconductors | |||
| U1,U2 | TDA2050L/LM1875 | Audio power amplifier | 2 |
| Miscellaneous | |||
| CN1,CN2 | XH-2P-2.54 | 2.54 mm 2 pin connector | 2 |
| H1, H2 | HDR-F-2.54_1×2 | Pin header 2 pin | 2 |
| P1,P2 | WJ500V-5.08-3P | Screw terminal 5.08 mm 3 pin | 2 |
| P3,P4 | OUT | Screw terminal 5.08 mm 2 pin | 2 |
Download files, links, and notes
Download PCB in Gerber and PDF
- Buy TDA2050 board
- BUY LM1875 board
- PDF datasheet IC lm1875 — 20W Audio Power Amplifier
- PDF datasheet IC TDA2030 UTC — 14W HI-FI audio amplifier
- PDF datasheet IC TDA2030A ST — 18 W hi-fi amplifier and 35 W driver
- PDF datasheet IC TDA2050 ST — 32 W hi-fi audio power amplifier
- PDF datasheet IC TDA2050 ST — 25-watt hi-fi audio power amplifier
Source: https://oshwhub.com/cqtsz/TDA2050-mono-power-amplifier-board
