TPA3116D2 Amp

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#8,422
doctormord said:
How were this measurements done? (Parameter, Equipment)
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With a Rohde & Schwarz UPA3 audio analyser. We've got some nice oldschool equipment laying around 😎

Hm, but I just remembered the lowpass filter, 22kHz of the UPA was set. At the time I didn't put much attention to it, as I thought I'm only interested in the audiorange. Maybe I should do them again with the LP disabled.
 
#8,428
Resistor Power Rating for TPA3116D2?

Hey everyone. Wondering if anyone might be able to help me out. I'm putting together a little bluetooth radio project and am using the TPA3116D2. I'm using the typical application circuit from the datasheet but I'm curious what power ratings I need for the resistors.

Thanks!
 
#8,431
I got two, didn't try them out yet, they are for gifts.

but they look nice, maybe not as heavy duty as the 24v unit that comes with their tk2050 dta100 amp--and not a grounded 3 prong plug like that one either.

Also, be advised that the price may show on web as 24.50, but when I added it to my cart it dropped to $10.

That's a great price.
 
#8,432
steveeboy said:
I got two, didn't try them out yet, they are for gifts.

but they look nice, maybe not as heavy duty as the 24v unit that comes with their tk2050 dta100 amp--and not a grounded 3 prong plug like that one either.

Also, be advised that the price may show on web as 24.50, but when I added it to my cart it dropped to $10.

That's a great price.
Click to expand...

These are the same bricks that Dell($24) and Gateway sell for laptops. See the second link in my original message for mfg specs. I have the tk2050 dta100 amp as well. The brick that came with it is delivering 24.4V. This one from PE is delivering exactly 24V. I am listening to mine now powering a modded YJBB board. Sounds great!
 
#8,437
Dual chip question.

On my dual chip 3116 amp the R13 position is empty. I've seen some ad photos that show the same, but I've also seen photos of the amp that show a resistor in place. Can anyone tell me what value that resistor might be? And does anyone know if that resistor is really necessary? My amp sounds just fine except for lots of hiss, although in my system the original red board amp sounds a lot better.
Thanks.
 
#8,438
Nimbus37 said:
On my dual chip 3116 amp the R13 position is empty. I've seen some ad photos that show the same, but I've also seen photos of the amp that show a resistor in place. Can anyone tell me what value that resistor might be? And does anyone know if that resistor is really necessary? My amp sounds just fine except for lots of hiss, although in my system the original red board amp sounds a lot better.
Thanks.
Click to expand...

Have a look at my posts on: http://www.diyaudio.com/forums/class-d/276622-2x100w-tpa3116d2-2-chips-each-pbtl-6.html#post4538194 so don't worry about R13 (10K) ... your board is configured master/master ... unless you specifically want to run as master/slave, in which case you'll need to add R13 & change the gain setting resistors on the slave chip or on both chips, depending on the gain you're chasing

Re hiss, none from my board, just an almost inaudible whooshing sound with no audio, ie: whoosh can only be heard with ear 200mm or so from speaker

I rolled the four electrolytics with 1200uF/35V FMs ... for no reason other than I've experienced quite a few failures with cheap electrolytics. The FMs are a lot taller than the original, but that's not a problem in my case

j.R.c
 
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#8,439
If you want functioning master slave, you'll need to replace the capacitor next to r13. There isn't a functioning master slave chinese dualchipboard, just because TI has displayed wrong values in datasheet from day 1 and by "accident" forgets every time they update datasheet. The chinese probably think they sourced fake TI 3116, and found solution to have equal right and left channel by removing synch link and by either putting both 3116 in slavemode or both in mastermode.
 
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