An evaluation board built around the STA333IS chip, showing how few extra components are required to make a functioning amplifier (Photo: STMicrosystems)
Schematic of the evaluation board shown above (Image: STMicrosystems)
STMicrosystem's new stereo digital audio amplifier
If you can find one, the new STA333IS digital audio chip and power amplifier from STMicroelectronics (STM) offers a quick and easy solution for converting digital audio into a 10 watt/channel stereo for anything from a boom box to a backyard sound system. Don't misunderstand, they currently are at distributors, selling for about one US dollar apiece. The problem is literally finding the chips. At about one-eighth the volume of a grain of rice and weighing only a few milligrams, drop one on a carpet and its gone for good.
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