LM48821, LM48821TLEVAL
www.ti.com SNAS354A – JUNE 2007 – REVISED MAY 2013 LM48821
Direct Coupled, Ultra Low Noise, 52mW
Differential Input Stereo Headphone Amplifier with I2C Volume Control
Check for Samples: LM48821, LM48821TLEVAL FEATURES DESCRIPTION With its directly-coupled output technology, the
LM48821 is a variable gain audio power amplifier
capable of delivering 52mWRMS per channel into a
16Ω single-ended load with less than 1% THD+N
from a 3V power supply. The I2C volume control has
a range of –76dB to 18dB. 1 2 Ground Referenced Outputs
Differential Inputs
I2C Volume and Mode Controls
Available in Space-Saving DSBGA Package
Ultra Low Current Shutdown Mode
Advanced Output Transient Suppression
Circuitry Eliminates Noises During Turn-On
and Turn-Off Transitions
2.0V to 4.0V Operation (PVDD and SVDD)
1.8 to 4.0V Operation (I2CVDD)
No Output Coupling Capacitors, Snubber
Networks, Bootstrap Capacitors, or GainSetting Resistors Required APPLICATIONS Notebook PCs
Desktop PCs
Mobile Phones …
