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TI Class D amp eliminates output filter

Posted: 01 Aug 2002 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? tpa2005d1? tpa200xdx? class d amplifier? audio power amplifier?

Targeted for use in GPRS and 3G cellphones, the TPA2005D1 Class D amplifier from Texas Instruments Inc. eliminates the need for an output filter, making it 30 percent smaller than the company's previous products.

A member of TI's TPA200xDX family, the 1.1W is claimed to operate at >85 percent efficiency and has improved common-mode input range. It also features a fully-differential architecture to provide improved noise cancellation, delivering a 78dB PSRR at 217Hz and a 485Vrms noise floor over the entire audio band.

The TPA2005D1 is suitable for cellular handheld apps, voice memo playback, personalized ringers, and hands-free designs.

The TPA2005D1 is shipped in a surface-mount 15-ball MicroStar BGA package and is priced at 49 cents in quantities of 1,000.

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