Amps lower audio BOM cost for LCD TVs

Suited for LCD, plasma, and DLP TVs, the 15-W TPA3121D2 and TPA3124D2 Class D amplifiers reduce BOM cost and save board space by eliminating two LC output filters. Both parts run off the existing 24-V backlight rail in an LCD HDTV, eliminating the need for a dedicated power rail.

The amps drive single-ended outputs and can be configured in BTL mode to support 30-W mono applications, such as wireless speakers or subwoofers. The TPA3124D2 features a fast mute time of 30 μs. With greater than 90% efficiency, the amps also eliminate the need for a heat sink. Both devices are fully protected with integrated self-protection circuits against faults. ($1.45 ea/1,000 — available now.)

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