Texas Instruments Audio Sub-System: TPA2050D4
The Texas Instruments TPA2050D4 analog-input audio sub-system integrates a stereo class-D power amplifier and stereo DirectPath™ headphone amplifier in a small 2.61 mm x 2.61 mm WCSP package. This TI device includes two stereo single-ended inputs that can be configured as one differential stereo input. Each input channel has a 32-step volume control with an additional 4-level gain control for the headphone amplifier for course volume adjustment. The TPA2050D4 offers excellent noise performance and low offset voltage for enhanced audio quality and no disturbing pop-noise from the speakers.