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Thursday, September 7, 2006
Class D audio-power amplifier provides a low A-weighted noise floor
Sep 7 2006 7:15AM | Permalink | Email this | Comments (0) |
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Targeting portable applications requiring high performance in limited board space, the TPA203xD1 Class D audio-power amplifier provides 88% efficiency and drives 2.75W from a 5V power supply into 4Ω with a 27-µV-rms A-weighted noise floor. Featuring a –69 dB CMRR (common-mode-rejection ratio) and a PSRR (power-supply-rejection ratio) at 217 Hz of –73 dB, the device is pin-compatible with the TPA2010D1. Available in a 1.5×1.5-mm WCSP (wafer-chip-scale package), the device encompasses a 2.5×1.7-mm pc-board area. The TPA203xD1 costs 60 cents (1000), with an evaluation module available.
Texas instruments, www.ti.com
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