描述 Description

General Description
The APA4838 is a monolithic integrated circuit , which provides DC volume control , and a stereo bridged audio power amplifiers capable of producing 2.8W (2.3W) into 3? with less than 10% (1.0%) THD+N. APA4838 includes a DC volume control , stereo bridge-tied and single-ended audio power amplifiers , stereo docking outputs , and a selectable gain control , that makes it optimally fittable for notebook PC, multimedia monitors, and other portable applications.

特性 Features

? Operating Voltage : 4.5V to 5V
? Stereo switchable bridged/single-ended power amplifiers
? DC Volume Control Interface , 0dB to –78dB with precision scale
? Supply Current, IDD = 15mA at Stereo BTL
? Low Shutdown Current, IDD = 0.7μA
? Bridge-Tied Load (BTL) or Single-Ended-(SE) Modes Operation
? Output Power at 1% THD+N , VDD=5V
?? – 2.3W/Ch (typ) into a 3 ? Load
?? – 2.0W/Ch (typ) into a 4 ? Load
?? – 1.2W/Ch (typ) into a 8 ? Load
? Output Power at 10% THD+N , VDD=5V
?? – 2.8W/Ch (typ) into a 3 ? Load
?? – 2.3W/Ch (typ) into a 4 ? Load
?? – 1.5W/Ch (typ) into a 8? Load
? Single-ended mode at 1.0% THD+N
?? – 95mW/Ch (typ) into 32? Load
? Depop Circuitry Integrated
? Thermal shutdown protection and over current protection circuitry
? High supply voltage ripple rejection
? PC99 Compliant
? 28-pin TSSOP-P (with enhanced thermal pad) power package availableApplications
? Notebook and Desktop Computers
? Multimedia Monitors
? Portable Applications?