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Mixed-Signal and Analog
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Audio amplifiers
The TPA0202 is the first 2-W stereo audio amp to feature integrated depop circuitry for applications with low-impedance speakers such as desktop and notebook computers, portable multimedia systems and speakerphones. The device is capable of delivering 2 watts of continuous average power to each of two 3-ohm speakers in a 5-V system and 800 mW in a 3-V system. Ultra-low distortion, measuring less than 0.05 percent THD+N at 2 watts and into 3-ohm loads, guarantees clear, crisp sound. An integrated switch configures the amp to operate in single-ended (SE) mode for headphones or in bridge-tied load (BTL) mode for speakers, reducing device count, board space and system cost. The TPA301 and TPA311 are designed for applications such as cellular phones and personal communications systems (PCS), voice pagers, personal digital assistants (PDAs), battery-powered toys and point-of-sale (POS) terminals. Each device is fully specified for 3.3- and 5-V operation, and each is capable of delivering 250 mW to an 8-ohm speaker from a 3.3-V power supply or 350 mW from a 5-V supply. The TPA301 is streamlined for BTL operation only. The TPA311 features depop and an integrated SE/BTL switch for products that use both speakers and headphones. The TPA0202, TPA301 and TPA311 are available now from TI.
Suggested resale pricing in U.S. dollars in 1K quantity. PowerPAD is a trademark of Texas Instruments. For complete information, order: TPA0202 Data Sheet (SLOS205), TPA301 Data Sheet (SLOS208) and TPS311 Data Sheet (SLOS207). See Order form
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A new single-chip audio solution for stereo systems and two low-voltage, low-power audio amplifiers are the latest additions to TI's analog technology portfolio. The devices have been designated the TPA0202, TPA301 and TPA311, respectively.