APA2603A

APA2603A 2.8W Stereo Class-D Audio Power Amplifier and Class AB Headphone Driver (DC Volume Control, UVP, AGC Function) Features General Description Operating Voltage: 3.3V-5.5V High Efficiency 85% at P =2.8W, O 4Ω Speaker, VDD=5V Filter-Free Class-D Amplifier Low Shutdown Current - IDD=1µA at VDD=5V 64 Steps Volume Adjustable from -80dB to +20dB by DC Voltage with Hysteresis AGC (Non-Clip) Function - Disable : 0.45VDD~VDD, Floating - Max, Power : GND UVP Function - Disable : Floating Output Power at THD+N=1% BTL Mode - 2.25W at V =5V, DD RL=4Ω - 1.3W at V =5V, DD RL=8Ω SE Mode - 68mW at V =5V, DD RL=32Ω Output Power at THD+N=10% - 2.8W at VDD=5V, RL=4Ω - 1.6W at VDD=5V, RL=8Ω Less External Components Required Two Output Modes Allowable with BTL and SE Modes Selected by SE/BTL Pin Input Signal and Headphone Output Signal in Phase Thermal and Over-Current Protections with Auto-Recovery Power Enhanced Packages SOP-24(300mil), Dip- 24(300mil) Lead Free and Green Devices Available (RoHS Compliant) Applications The APA2603A is a stereo, high efficiency, filter-free ClassD audio amplifier available in a SOP-24 package. The APA2603A provide the precise DC volume control, the gain range is from +20dB (V = VOLUME 0V) to -80dB (VVOLUME=5V) with 64 steps precise control. It’s easy to get the suitable amplifier’s gain with the 64 steps gain setting. The filter-free architecture eliminates the output filters compared...