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LM4917 데이터시트(PDF) 1 Page - Texas Instruments |
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LM4917 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 25 page LM4917 www.ti.com SNAS238G – AUGUST 2004 – REVISED MAY 2013 LM4917 Boomer™ Audio Power Amplifier Series Ground-Referenced, 95mW Stereo Headphone Amplifier Check for Samples: LM4917 1 FEATURES DESCRIPTION The LM4917 is a stereo, output capacitor-less 23 • Ground Referenced Outputs headphone amplifier capable of delivering 95mW of • High PSRR continuous average power into a 16 Ω load with less • Available in Space-Saving TSSOP Package than 1% THD+N from a single 3V power supply. • Ultra Low Current Shutdown Mode The LM4917 provides high quality audio reproduction • Improved Pop and Click Circuitry eliminates with minimal external components. A ground referenced output eliminates the output coupling Noises During Turn-On and Turn-Off capacitors typically required by single-ended loads, Transitions reducing component count, cost and board space • 1.4 – 3.6V Operation consumption. This makes the LM4917 ideal for • No Output Coupling Capacitors, Snubber mobile phones and other portable equipment where Networks, Bootstrap Capacitors board space is at a premium. Eliminating the output coupling capacitors also improves low frequency • Shutdown Either Channel Independently response. APPLICATIONS The LM4917 operates from a single 1.4V to 3.6V power supply, features low 0.02% THD+N and 70dB • Notebook PCs PSRR. Independent right/left channel low-power • Desktop PCs shutdown controls provide power saving flexibility for • Mobile Phone mono/stereo applications. Superior click and pop suppression eliminates audible transients during start • PDAs up and shutdown. Short circuit and thermal overload • Portable Electronic Devices protection protects the device during fault conditions. KEY SPECIFICATIONS • Improved PSRR at 1kHz: 70dB (Typ) • Power Output at VDD = 3V, RL = 16Ω, THD ≦ ≦ 1%: 95mW (Typ) • Shutdown Current: 0.01µA (Typ) 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 Boomer is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2013, 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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