TDA7294, NMOS, A1 KIT 106 PCB good? - diyAudio
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Old 14th January 2015, 10:28 AM   #1
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Join Date: Jun 2003
Location: Hamilton, was Ottawa (Canada)
Default TDA7294, NMOS, A1 KIT 106 PCB good?

TDA7294: 100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

Looks like TDA7293, but without the pin8 buffer driver input/output for easy paralleling. Pinout are the same besides this.

TDA7294 ds sch.jpg



The TDA7294 datasheet has the entire block diagram for the TDA729X

TDA7294 block dia.jpg


that's close to the TDA7293

TDA7293 DMOS block dia.jpg


The DS also has an alternate PCB:
TDA7294 ds pcb.jpg

than the TDA7293 datasheet:
TDA7293 ds pcb.jpg



I have the classic A1 KIT 106:

Amplifiers (about 1/5 down)

It uses this simple schematic:

A1 KIT 106 TDA7294 sch.jpg

And here's what the PCB looks like:




So any experience with the TDA7294 besides?
Optimizing TDA7294 Output

Is it exactly a 7293 just without the pin8 parallel function?

Is the A1 Kit 106 PCB any good? PS HF and MF bypassing, input, Vp and Vs, ?

Thanks,
Jeff
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Old 14th January 2015, 05:04 PM   #2
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Join Date: Jun 2003
Location: Hamilton, was Ottawa (Canada)
opps here they are:

IMG_4055.jpg

IMG_4057.jpg

IMG_4059.jpg
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