TDA 4 X 13 – 2 X 38W Audio Power Amplifier 2 X 13 + 1 X 38W Audio Power Amplifier X 38W AUDIO POWER AMPLIFIER X 38W AUDIO POWER. TDA STMicroelectronics Audio Amplifiers Car-Radio Amplifier 18V Op 28V DC 36W datasheet, inventory, & pricing. STMicroelectronics TDA Audio Amplifiers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for STMicroelectronics .
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You can also use your oscilloscope to carefully measure the voltages on the other TDA pins, yda7379 the IC is powered and an audio signal is connected, to confirm that the signal is definitely reaching the IC and that the voltages on the other pins seem reasonable for their function. I hope this additional information is helpful. Do include R1 and C5.
After some searching, I found an older audio amplifier which I hope has a similar diagnostic output, to give us a clue about how to use tds7379 diagnostic output of your TDA although this reverse-engineering is not guaranteed to be correct. Sign up or log in Sign up using Google.
You might want to review their use of the IC, to see if you learn anything from them which is different from your usage of the IC: Is it required that you use 20V supply to the IC, as you mentioned, or can you use a lower voltage like 12 to 15V?
What can that diagnostic output tell us, and how does it do so?
Circuit design When you said “[ Below is an extract from the above STA datasheet which also confirms my earlier recommendation that ST-BY pin 7 must not be directly connected to the supply voltage.
I tried with two different chips, and after connecting STBY to VCC it starts to consume the correct quiescent current but there is no sound. The similar list of features might suggest that the implementation of the diagnostic output of the TDA may be similar to that in the TDAQ: Sign up using Email and Password. tad7379
This site in Portugese is more complex. The current drain will be minimal on this rail, so tdx7379 heatsink should be required. Yes, I double checked it. Home Questions Tags Users Unanswered. It’s always possible that you might discover something: Therefore I believe that temporary connection to gather tda73379 information should be safe. Based on this diagram from the TDA datasheet: The input ta7379 is 20V, input signal is about 0.
The TDAQ datasheet page 7 shows that its diagnostic output pin will be pulled low on an error condition e.
However, an earlier audio amplifier, part number TDAQ datasheet viewable via this webpage had a similar-sounding feature.
I found datasheets for two other similar audio amplifier ICs, which give more confidence in the interpretation of the diagnostic pin voltage mentioned above:. There wasn’t much information in that document also it says it’s a preliminary version and I couldn’t find a newer oneand I couldn’t make it work.
As you said, there is no information about using the signal on the “Diagnostic Output” pin 10 in the TDA datasheet. I also tdx7379 a regulator so I can get 5V but I’m not ttda7379 it for this circuit.
Of course you have to decide for yourself whether to take the risk, given that neither of us can find tdq7379 information about the TDA! Alejandro – Thanks for that clear update. You might want to review their use of the IC, to see if you learn anything from them which is different from your usage of the IC:.
I have an oscilloscope available, do you recommend any tests? This would be my approach, but since I don’t have that IC, I cannot guarantee the results.
Make sure not to connect any speaker terminal to “ground”. So the question is: I have explained my suggested approach below.
I’m trying to build the double bridge circuit mentioned in the datasheet, available here: This site in Chinese seems to be a simple circuit: Tda737 any case, both TDA projects which I found do use that resistor.
I have a 12V battery and a boost converter so I can get intermediate voltages. Alejandro Pulver 2 6. In this STA datasheet fromagain it confirms the interpretation of the output from the diagnostic pin see sections 6.