I have ten TDA8920's i ordered from digikey a while back. Haven't had time to design the pcbs and test them, but it seems fairly straight forward.
I found someone who has used them and they passed me their artwork designs, but i want to do my own neater sm version.
They look good. I was planning to use them in a 12"/1" battery powered speaker running from 10s of lipos or 4x 12v SLAs.
I found someone who has used them and they passed me their artwork designs, but i want to do my own neater sm version.
They look good. I was planning to use them in a 12"/1" battery powered speaker running from 10s of lipos or 4x 12v SLAs.
Davey T said:
I've got the ExpressPCB files and parts list for the TDA8920 circuit in the picture. It's the same layout as in one of the data sheets, except it is hard-wired in bridge mode, and it includes the power supply. Send email if you are interested and I'll respond when I get back home.
An externally hosted image should be here but it was not working when we last tested it.
New design
I made a board based on TDA8920B schematic in datasheet. Since I used most components trough hole but 100nF caps and TDA8920BTH (all SMD), I made a single side board. No noise or EMI problems using just a heatsink (a piece of plane aluminium) conected to GND. Also, I used jumpers to select BTL or SE configuration.
At present NXP recomends a new schematic (simplified one) for TDA8920C and TDA8950. It seams to be propper for 8920B too. Did anybody test the new schematic with 8920B? Thanks, Rodolfo
I made a board based on TDA8920B schematic in datasheet. Since I used most components trough hole but 100nF caps and TDA8920BTH (all SMD), I made a single side board. No noise or EMI problems using just a heatsink (a piece of plane aluminium) conected to GND. Also, I used jumpers to select BTL or SE configuration.
At present NXP recomends a new schematic (simplified one) for TDA8920C and TDA8950. It seams to be propper for 8920B too. Did anybody test the new schematic with 8920B? Thanks, Rodolfo
Do you know the difference in the new recommended schematic?
Also, would the 8950 be overkill, one per speaker in BTL mode, for a surround home theater setup? Perhaps the 8920 would be more than enough?
Also, would the 8950 be overkill, one per speaker in BTL mode, for a surround home theater setup? Perhaps the 8920 would be more than enough?
I could send you datasheets to you to see changes. Ask me by mail to rodolfo@kashima.com.ar.
Class D amplifiers are most usefull for cases in that you need small heatsinks or just large efficience. Have in mind for a home theater some NXP's AB amplifiers may be a better option because quality and an easyer build. Anyway in BTL conf. TDA8920B is more than enough for that you are looking for.
Class D amplifiers are most usefull for cases in that you need small heatsinks or just large efficience. Have in mind for a home theater some NXP's AB amplifiers may be a better option because quality and an easyer build. Anyway in BTL conf. TDA8920B is more than enough for that you are looking for.
lumanauw said:
Avnet lists them for about $6, but they don't show any stock. Also, minimum purchase is 500 units and they don't specify a lead time. Since they don't specify a lead time it may take a while before they show up at Digikey/Mouser.
A company right here (POLYTRON) used it, but the filter inductor is very hot, it has good protection and sounds better than usual class-D. It is cheap and very small indeed, my friend designed for them. If there someone near only, may I could help.
He also told me that this thing could very easily driven real 120Wrms into 4ohm.
He also told me that this thing could very easily driven real 120Wrms into 4ohm.
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Oh! we have finished modules used TDA8950TH OR TDA8920BTH,anybody like ,pls connect us.SMPS and class D all in one.
Another batch TDA8950TH chip arrived days ago,we have revised the circuit and build one newer module,of course,include CLASS D and SMPS,sound good.
Key Specifications:
POWER OUT:
2×150W/ 4Ω /10%THD/SE MODE
2×100W/ 4Ω / 0.05%THD / SE MODE
1×300W/ 8Ω /10%THD/ BTL MODE
FREQUENCY RESPONSE: THD+N ≤0.05% / 20-20KHz / ±1dB/1W
INPUT SENSITIVITY: 0dB(1Vrms)
POWER SUPPLY: 110VAC OR 220VAC 50 OR 60Hz
AUXILIARY POWER: +/- 15V/100mA and +5V/200mA
DIMENSIONS: 160MM(length)*80(width)*50mm(height)
WEIGHT: 0.54Kg
Key Specifications:
POWER OUT:
2×150W/ 4Ω /10%THD/SE MODE
2×100W/ 4Ω / 0.05%THD / SE MODE
1×300W/ 8Ω /10%THD/ BTL MODE
FREQUENCY RESPONSE: THD+N ≤0.05% / 20-20KHz / ±1dB/1W
INPUT SENSITIVITY: 0dB(1Vrms)
POWER SUPPLY: 110VAC OR 220VAC 50 OR 60Hz
AUXILIARY POWER: +/- 15V/100mA and +5V/200mA
DIMENSIONS: 160MM(length)*80(width)*50mm(height)
WEIGHT: 0.54Kg
Attachments
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Duad TDA8950+SMPS IN ONE BOARD
We have finsh our new tda8950 board,performance good .sound good.
proamp design.dynamic compressor and ocp/otp/uvp/ovp protection inside.
POWER OUT: 1×100W/ 4Ω /0.05%THD/4SE MODE
2×200W/ 8Ω / 0.05%THD / 2BTL MODE
1×400W/ 4Ω /1%THD/ PBTL MODE
FREQUENCY RESPONSE: THD+N ≤0.05% / 20-20KHz / ±1dB/1W
INPUT SENSITIVITY: 0dB(1Vrms)
COMPRESSOR THRESHOLD: +4dBu
POWER SUPPLY: 110VAC OR 220VAC 50 OR 60Hz
AUXILIARY POWER: +/- 15V/100mA and +5V/200mArms
DIMENSIONS: 250MM(length)*65mm(width)*39mm(height)
WEIGHT: 0.47Kg
We have finsh our new tda8950 board,performance good .sound good.
proamp design.dynamic compressor and ocp/otp/uvp/ovp protection inside.
POWER OUT: 1×100W/ 4Ω /0.05%THD/4SE MODE
2×200W/ 8Ω / 0.05%THD / 2BTL MODE
1×400W/ 4Ω /1%THD/ PBTL MODE
FREQUENCY RESPONSE: THD+N ≤0.05% / 20-20KHz / ±1dB/1W
INPUT SENSITIVITY: 0dB(1Vrms)
COMPRESSOR THRESHOLD: +4dBu
POWER SUPPLY: 110VAC OR 220VAC 50 OR 60Hz
AUXILIARY POWER: +/- 15V/100mA and +5V/200mArms
DIMENSIONS: 250MM(length)*65mm(width)*39mm(height)
WEIGHT: 0.47Kg
Attachments
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good suggestion,but we only have tda8954J,we test time ago,feel no good.we will try it later.
TDA8950 works stable and sound powerful.only our experience.
Thanks!
TDA8950 works stable and sound powerful.only our experience.
Thanks!
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