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TPA721DGNR Fiches technique(PDF) 1 Page - Texas Instruments |
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TPA721DGNR Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 24 page www.ti.com FEATURES DESCRIPTION 1 2 3 4 8 7 6 5 SHUTDOWN BYPASS IN+ IN– VO– GND VDD VO+ D OR DGN PACKAGE (TOP VIEW) Audio Input Bias Control VDD 700 mW 6 5 7 VO+ VDD 1 2 4 BYPASS IN– VDD/2 CI RI CS CB RF SHUTDOWN VO– 8 GND From System Control 3 IN+ – + – + TPA721 SLOS231E – NOVEMBER 1998 – REVISED JUNE 2004 700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER • Fully Specified for 3.3-V and 5-V Operation The TPA721 is a bridge-tied load (BTL) audio power amplifier developed especially for low-voltage appli- • Wide Power Supply Compatibility 2.5 V – 5.5 V cations where internal speakers are required. • Output Power for RL = 8 Ω Operating with a 3.3-V supply, the TPA721 can – 700 mW at VDD = 5 V, BTL deliver 250-mW of continuous power into a BTL 8- Ω – 250 mW at VDD = 3.3 V, BTL load at less than 0.6% THD+N throughout voice band frequencies. Although this device is characterized out • Integrated Depop Circuitry to 20 kHz, its operation is optimized for narrower • Thermal and Short-Circuit Protection band applications such as wireless communications. • Surface-Mount Packaging The BTL configuration eliminates the need for exter- nal coupling capacitors on the output in most appli- – SOIC cations, which is particularly important for small – PowerPAD™ MSOP battery-powered equipment. This device features a shutdown mode for power-sensitive applications with a supply current of 7 µA during shutdown. The TPA721 is available in an 8-pin SOIC surface-mount package and the surface-mount PowerPAD MSOP, which reduces board space by 50% and height by 40%. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 1998–2004, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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Description similaire - TPA721DGNR |
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