APA0711

The APA0710 is a bridged-tied load (BTL) or singledended (SE) audiopower amplifier developedespecially for low-voltage applications where internal speakers and external earphone operation are required. The APA0711is aonlyBTLaudio power amplifier developed especially for low-voltage applications where internal speakers are required. Operating with a 5V supply, theAPA0710/1 can deliver 1.1W of continuous power into a BTL 8 load at 10% THD+N throughout voice band frequencies.Although this device is characterized out to 20kHz,its operation is optimized for narrowband applications such as wireless communications. The BTL configuration eliminates the need for external coupling capacitors on the output inmost applications, whichis particularly important for small battery-powered equipment. A unique feature of theAPA0710 is that it allows the amplifier to switch from BTL to SE on the fly when an earphone drive is required. This eliminates complicatedmechanical switching or auxiliary devices just to drive the external load. This device features a shutdownmode for power-sensitive applications with special depop circuitry toeliminate speaker noisewhen exiting shutdownmode. The APA0711 are available in an 8-pin SOP and 8-pin MSOP-P with enhanced thermal pad.