LM48861TMBD

LM48861, LM48861TMBD www.ti.com SNAS450B – JUNE 2008 – REVISED MAY 2013 LM48861 Ground-Referenced, Ultra Low Noise, Stereo Headphone Amplifier Check for Samples: LM48861, LM48861TMBD FEATURES DESCRIPTION • The LM48861 is a single supply, ground-referenced stereo headphone amplifier. Part of TI's PowerWise™ product family, the LM48861 consumes only 3mW of power, yet still provides great audio performance. The ground-referenced architecture eliminates the larger DC blocking capacitors required by traditional headphone amplifier's saving board space and reducing cost. 1 23 • • • • • • • Ground Referenced Outputs – Eliminates Output Coupling Capacitors Common-Mode Sensing Advanced Click-and-Pop Suppression Low Supply Current Minimum External Components Micro-Power Shutdown ESD Protection of 8kV HBM Contact Available in Space-Saving 12-Bump DSBGA Package APPLICATIONS • • • Mobile Phones Portable Electronic Devices MP3 Players KEY SPECIFICATIONS • • • • • Output Power/Channel at VDD = 1.5V,THD+N = 1% – RL = 16Ω 12mW (typ) – RL = 32Ω 13mW (typ) Output Power/Channel at VDD = 1.8V, THD+N = 1% – RL = 16Ω 24mW (typ) – RL = 32Ω 22mW (typ) Quiescent Power Supply Current at 1.5V 2mA (typ) PSRR at 217Hz 83dB (typ) Shutdown Current 0.01μA (typ) The LM48861 features common-mode sensing that corrects for any differences between the amplifier ground and the potential at the headphone return terminal, minimizing noise created by any ground mismatches. The LM48861 delivers 22mW/channel into a 32Ω load with