The TDA provides high output current and has very low harmonic and cross-over distortion. Further the device incorporates an original and patented short circuit protection system comprising an arrangement for automatically limiting the dissipated power as to keep the working point of the output transistors within their safe operating area. A conventional thermal shutdown system is also included. See the new package dimensions section later of this datasheet.
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The TDA is a single chip amplifier capable of 14W output into 4 ohms with a few external components. It can be used for almost any application you could think of. The power from this amplifier is very average of many amplifiers, which means it could find applications anywhere, here are just a few ideas: A pair can form a capable amp for a stereo system i.
This amplifier can be used to complete surround sound systems i. I used this amp for my centre channel in my original surround sound system. It now lays unused, waiting for a mono audio application to present itself. Tweeter or mid range amplifiers in bi-amp or tri-amp systems. This amplifier is based on the typical application in the ST Microelectronics datasheet.
The performance from this circuit is very satisfactory. As can be seen, the circuit is quite simple indeed. Wiring this amp onto veroboard or stripboard is possible, but a real pain because the pins do not naturally fit the standard holes on these boards. I have wired a TDA similar amp onto stripboard with success, but I had to bend the pins straight first, then cut them to them same length followed by carefully spreading them out. I have done so when I built my TDA amp and it is very well suited to the chip and a standard range of components.
The only adjustments I made were to move holes so they were optimal for my components obtained. Note: The above image is copied directly from the datasheet and is not mine, nor is it likely to be scale.
To achieve this scale, the best idea is to print to PDF file to A4 paper. I used 0. Capacitors I used were electrolytic cans for C2, C5 and C6. At the time of building, I did not have enough uF caps so I used uF caps instead, this will not cause trouble, unless you use caps that are smaller than uF for C5 and C6.
Some readers may want to use a polyester capacitor for the input C1 , this would work too but I am not sure whether any benefit will arise from the extra expense. Other capacitors bypass caps C3 and C4. Mylar may be used but I prefer polyester caps and they are not expensive unless you get large values.
The values of R5 and C8 are worked out from the equations in the datasheet, but I used 1. Diodes should be 1N or similar make sure you solder them in the right way round. A good heatsink is important and this should be a large size with good thermal conductivity. When you operate the TDA from the recommended split rail power supply, you must insulate the device from the heatsink using a mica washer or similar.
With single rail supply, this is not needed. I do not like ignorant and therefore potential dead readers! Increase this to 80VA for two amps. A fuse must be installed too and the supply must be properly earthed.
Bridge Version The datasheet also shows an application for a bridge version of the amplifier. I have not built this version yet so I cannot make any guarantees of its performance, but it is likely to please for the cost. There is also no PCB layout supplied in the datasheet so you will need to design your own. I can say a few things though. When using the bridge version, loads smaller than 4 ohms should not be used and the speaker must not be shorted to ground either.
With the bridge version, the VA rating of the transformer must be doubled. This means 80VA for one bridged amp, VA for two. Performance My first and only TDA amp has satisfied me for its application for a centre channel amplifier in my old surround sound system. While now unused, it is ready to return to life whenever I need it to. The sound is very appreciable, it is unlikely to be hi-fi but will certainly out-perform most commercial offerings at the same price.
It also includes short circuit protection, power limiting to protect the output transistors and thermal shut down. I am sure you will find the right application for this amp. If you need more power, check out the article for the TDA What is even better is he has also provided complete schematics to add a tone control, high pass filter ideal for pushing more power into smaller speakers which do not reproduce low frequencies. He has also provided a clipping detector so you know when you are pushing the TDA to its limits.
For more details, see here. I did have an implementation of my own of a stereo TDA amplifier I wanted to put some pictures and details up of, and it served me a whole year at uni as a PC sound system, which sounded very good with a pair of cheap Ariston speakers. I did want it to look a little more pretty before I put details on here though, and never got round to that! Now I have had the time to, it has been taken by my Dad to his work place in London so I might not see it again for some time : TDA If you want less power and cost , the TDA datasheet here will directly replace the TDA and will use exactly the same circuit above except for the bridge one.
The idea for this chip is that is just under two thirds the price and is great if you do not need the extra power. All rights reserved. Feel free to print material you may need, but if you want to use information on your own sites and for business purposes, please E-mail me or link to my site using this address: www.
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Микросхемы серии TDA
The TDA is a single chip amplifier capable of 14W output into 4 ohms with a few external components. It can be used for almost any application you could think of. The power from this amplifier is very average of many amplifiers, which means it could find applications anywhere, here are just a few ideas: A pair can form a capable amp for a stereo system i. This amplifier can be used to complete surround sound systems i.
TDA2030 - 14W Single Chip Power Amp
TDA2006 ST Microelectronics, TDA2006 Datasheet
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