Hello DIY'ers,
I have just received a email from ST Microelectronics about their new class-d amplifier with digital audio processing on chip.
I must say: It looks quite interesting for a compact amplifier solution.
Please take a look
STA350BW - STMicroelectronics
Regards,
Simon H.A.
I have just received a email from ST Microelectronics about their new class-d amplifier with digital audio processing on chip.
I must say: It looks quite interesting for a compact amplifier solution.
Please take a look
STA350BW - STMicroelectronics
Regards,
Simon H.A.
A fascinating chip, 8 biquads per channel is enough. But darn! I just purchased a spare miniDSP this week This chip would be ideal for my new suitcase-portable system...
I see the heatsink is facing down to the PCB, that is bad - this is intended for low-power applications only. Additionally, the distortion is high, rather like the TDA7498 I just struggled with for so long, just trying to achieve the results published on their data sheet.
The chip is the same (tiny) size as the TDA7498. Just a barely adequate HiFi power amplifier. Not audiophile.
I also note that there is no distortion vs frequency curve given. This was the area where the TDA7498 got into real trouble, with excessive distortion above 1KHz.
.
This chip would be ideal for my new suitcase-portable system...I see the heatsink is facing down to the PCB, that is bad - this is intended for low-power applications only. Additionally, the distortion is high, rather like the TDA7498 I just struggled with for so long, just trying to achieve the results published on their data sheet.
The chip is the same (tiny) size as the TDA7498. Just a barely adequate HiFi power amplifier. Not audiophile.
I also note that there is no distortion vs frequency curve given. This was the area where the TDA7498 got into real trouble, with excessive distortion above 1KHz.
.
Actually, this new ST product range is looking quite interesting. They are obviously going after compact HiFi and active speakers in a big way. The STA350 can drive two stereo speakers plus a subwoofer, two stereo channels, or a mono channel. Quite a nice idea, this 'FFX'. Here is the press release: STMicroelectronics News: STA350BW Sound Terminal 2.1-channel high-efficiency digital audio system
They are consumer chips, but the Application note provided the data I was looking for, and the performance is actually much higher fidelity than the TDA7498. I attach the distortion vs frequency curve below.
The DSP is 24-28bit, less than the 48 bits of the MiniDSP, but probably adequate for their target market.
So where do I buy an application board? Where do I get the GUI control software they talk about in the application note? I have an application ready to drop this chip straight in
.
They are consumer chips, but the Application note provided the data I was looking for, and the performance is actually much higher fidelity than the TDA7498. I attach the distortion vs frequency curve below.
The DSP is 24-28bit, less than the 48 bits of the MiniDSP, but probably adequate for their target market.
So where do I buy an application board? Where do I get the GUI control software they talk about in the application note? I have an application ready to drop this chip straight in
.
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