For stereo channel, you need to build 2 same circuit which will amplify each channel right and left channel. Lm1875 1features description the lm1875 is a monolithic power amplifier offering 2 up to 30 watts output power very low distortion and high quality performance for avo typically 90 db consumer audio applications. With power supply for ease of assembly for any hobbyist. The audio amplifier shown here is based on the tda7240 ic from st microelectronics. Lm1875 25w mono hifi audio amplifier module 3050 quasar. Lm1875 20w audio power amplifier july 2002 lm1875 20w audio power amplifier. Electronic kit module available using this component. Lm1875 datasheet, lm1875 pdf, lm1875 pinout, equivalent, replacement 20w audio power amplifier utc, schematic, circuit, manual. The lm1875 requires very less external components and has very low distortion. This amplifier offers high quality and high performance audio at very low. The official datasheet pdf claims the ability to drive 20w into 8. Lm1875 datasheet111 pages nsc 20w audio power amplifier. Today, we try to use the tda2050, which has the output power about 50 watts that shape and easy to use as well. Lm1875 20w audio power amplifier datasheet catalog.
Jan 26, 2010 20w audio amplifier using lm1875 specifications 20w audio amplifier kit is based on lm1875 ic. Lm1875 20w audio amplifier veroboard sound test youtube. The lm1875 supplies 20 watts in loads of 4 ohms or 8 ohms. Quiet fadeinoutmute mode each amplifier has an independent smooth transition. The ic has minimum external parts count and is available in the 7 pin compact heptawatt package. For detailed information about the circuit and the lm1875 chip specifications and performance see the texas instruments lm1875 audio power amplifier datasheet pdf. We used the tda2030 to build many power amplifier projects, but they have lower power than 30 watts. Lm1875 datasheet, lm1875 datasheets, lm1875 pdf, lm1875 circuit. The lm1875 is a monolithic audio amplifier that offers a very low distortion and a performance of high quality for projects of audio amplifiers. Lm1875 20w audio power amplifier march 1995 lm1875 20w audio power amplifier general description the lm1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. Pdf lm1875 20w audio power amplifier julio pasinatto. May 16, 2017 20w audio amplifier kit is based on lm1875 ic.
Audio frequency amplifier 20w based lm1875, requires a minimum number of components. You may find more info on this ic on the datasheet here. Mar 20, 2015 this is 20 watt power audio amplifier which use ic lm1875 as main component. Nsc, alldatasheet, datasheet, datasheet search site for electronic components and. Lm1875 datasheet26 pages utc 20w audio power amplifier. Preamplifier a025 audio amplifier highend 20w stereo. Oct 16, 2019 the lm1875 is a wide power amplifier with very low distortion and highquality efficiency for audio applications. The circuit generally follows the standard application note for the lm1875. The tda 7240 is an integrated audio amplifier ic that can deliver 20 watts of audio output power into a 4ohm load. Lm1875 features description the lm1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. Circuit power amplifier stereo audio with lm1875 2 x 20.
Lm1876 overture audio power amplifier series dual 20w audio. This project is a 20w audio amplifier based on lm1875. Sep 17, 20 this is a sound test of the lm1875t 20w audio amplifier, it is mounted on a veroboard. With a power of up to 20 watts stereo amplifier that is suitable for use as power audio amplifier in various applications such as power amplifier for pc audio, fm radio, mp3 speaker, finally youre sure to find great uses for this amplifier with lm1875.
This amplifier offers high quality and high performance audio at. Lm1875 based simple amplifier full project available. Lm1876 overture audio power amplifier series dual 20w. The amplifier is designed to operate with a minimum of external components.
Lm1875 20w audio power amplifier july 2002 lm1875 20w audio power amplifier general description the lm1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. Presented here is a lm1875 based simple amplifier for various applications. Its amplifiers circuits are designed to working with a minimum of external parts. Jan 23, 2020 the lm1875 is a monolithic audio amplifier that offers a very low distortion and a performance of high quality for projects of audio amplifiers. The lm1875 delivers 20 watts into a 4x or 8x load on g25v supplies. It is designed to be stable with gain higher than ten. This is an audio amplifier circuit using integrated lm1875 stereo to 2 x 20 watts. General description of 20w audio power amplifier lm1875 the lm1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. Snas524a may 2004 revised may 2004 lm1875 20w audio power amplifier check for samples. Use a 25watt soldering iron for soldering lm1875 and other components. Lm187520w audio power amplifiergeneral descriptionthe lm1875 is a monolithic power amplifier offering very lowdistortion and high quality performance for consumer audioapplications. The amplifier is designed to operate with a minimum of external. Hi guys, this video i did make the audio amplifier circuit lm1875 20w lm1875 is a monolithic power amplifier that provides very low distortion and highquality performance for consumer audio. There are none dc on the output, and it doess not oscillate.
Description this project is designed to operate with minimum of external components. It gives power is 20 watts into a 4 ohms or 8 ohms load on 25v power supplies. Lm1875 datasheet16 pages utc 20w audio power amplifier. For stereo channel, you need to build the two same circuits which will amplify the both of audio channels right and left channel. The gobo stereo audio amplifier kit is based around the lm1875 ic. Lm1875 20w audio power amplifier general description features the lm1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. Internal output protection diodes circuit techniques and. Nov 26, 2015 20w audio amplifier based on lm1875 description this project is designed to operate with minimum of external components. Lm1875t datasheet national semiconductor, download pdf. The lm1875 delivers 20 watts into a 4ohm or 8ohm load on. The voltage of the power supply will have an effect on the power of the ic. The amplifier has a good performance and very low harmonic distortion. Power section using dual18v 150w highquality toroidal transformer, 35v4700.
Its main application is stand alone audio power amplifier but with two or more additional transistors we can obtain configurations adaptable to more applications. How to make audio power amplifier circuit ic lm1875 20w. This amplifier offers high quality and high performance audio at very low distortion. The utc lm1875 is a monolithic power amplifier offering very low distortion and. General description of 20w audio power amplifier lm1875.
Nsc 20w audio power amplifier,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. This is just another 20w audio amplifier circuit, but this time based on the lm1875 audio amplifier ic from national semiconductors. Gobo stereo audio amplifier kit lm1875, 15w, classab. This project is stereo that easy to builds can adjust volume, tone and balanced sound. The lm1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. Aug 19, 2011 audio frequency amplifier 20w based lm1875, requires a minimum number of components. Circuit diagram of the simple 10watt audio amplifier using lm1875 construction and testing. Kits has been design around lm1875 ic from national. In this project use, the single voltage supply is positive and ground.
Lm1875 20w audio power amplifier general description the lm1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. The lm1875 is a monolithic power amplifier offering 2 up to 30 watts output power very low distortion and high quality performance for avo typically 90 db consumer audio applications. Lm1875 pdf, lm1875 description, lm1875 datasheets, lm1875. They can use with dc power supply wide range between 16 volts to 60 volts and can use both dual and single voltage. This is 20 watt audio amplifier circuit design which use ic lm1875 as main component. Audio frequency amplifier 20w based lm1875 amplifier. Utc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors.
A 2pin connector should be used for input and output connections to make the prototype safe and clean. Ltd1qwr107019,b20w audio power amplifierdescriptionthe utc lm1875 is a monolithic power amplifier offeringvery low distortion and high quality performance forconsumer audio applications. Lm1875 datasheet pdf pinout 20w audio power amplifier. Download 25w hifi audio amplifier based lm1875 here. With a 25v dual power supply lm1875 can deliver 20w of audio power into a 4 ohm speaker. The utc lm1875 design utilizes advanced circuit techniques. Utc, alldatasheet, datasheet, datasheet search site for electronic components and. The lm1876 is a stereo audio amplifier capable of 23 spike protection delivering typically 20w per channel of continuous minimal amount of external components average output power into a 4. Jan 23, 2020 this is an audio amplifier circuit using integrated lm1875 stereo to 2 x 20 watts. Use a suitable heatsink for lm1875 to prevent its overheating. Using an 8x load andg30v supplies, over 30 watts of power may be delivered.