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LM4855 bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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LM4855 bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 27 page LM4855 www.ti.com SNAS164C – JUNE 2002 – REVISED MAY 2013 LM4855 Integrated Audio Amplifier System Check for Samples: LM4855 1 FEATURES DESCRIPTION The LM4855 is an audio power amplifier system 2 • 1.1W (Typ) Output Power with 8 Ω Mono BTL capable of delivering 1.1W (typ) of continuous Load average power into a mono 8 Ω bridged-tied load • 115mW (Typ) Output Power with Stereo 32 Ω (BTL) with 1% THD+N and 115mW (typ) per channel BTL Loads of continuous average power into stereo 32 Ω BTL loads with 0.5% THD+N, using a 5V power supply. • SPI Programmable 32 Step Digital Volume Control The LM4855 features a 32 step digital volume control • Eight Distinct Output Modes and eight distinct output modes. The digital volume control and output modes are programmed through a • DSBGA and WQFN Surface Mount Packaging three-wire SPI serial control interface, that allows • "Click and Pop" Suppression Circuitry flexibility in routing and mixing audio channels. • Thermal Shutdown Protection The LM4855 is designed for cellular phone, PDA, and • Low Shutdown Current (0.1uA, Typ) other portable handheld applications. It delivers high quality output power from a surface-mount package KEY SPECIFICATIONS and requires only six external components. • THD+N at 1kHz, 1.1W into 8 Ω BTL: 1.0% (Typ) The industry leading DSBGA package only utilizes 2mm x 2.3mm of PCB space, making the LM4855 the • THD+N at 1kHz, 115mW into 32 Ω BTL: 0.5% most space efficient audio sub system available (Typ) today. • Single Supply Operation: 2.6 to 5.0V APPLICATIONS • Moblie Phones • PDAs 1 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. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2002–2013, 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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Mô tả tương tự - LM4855 |
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