TPA711

The TPA711 is a bridge-tied load (BTL) or ingle-ended (SE) audio power amplifier developed specially for low-voltage applicationswhere internal speakers and external earphone operation are equired. Operating with a 3.3-V supply, the TPA711 can deliver 250-mW of continuous power into a BTL 8-load at less than 0.6% THD+N throughout voice band frequencies. Although this device is characterized out o 20 kHz, its operation was optimized for narrower band applications such as wireless communications. The TL configuration eliminates the need for external coupling capacitors on the output in most applications, which s particularly important for small battery-powered equipment. A unique feature of the TPA711 is that it allows he amplifier to switch from BTL to SE on the fly when an earphone drive is required. This eliminates complicated echanical switching or auxiliary devices just to drive the external load. This device features a shutdown mode or power-sensitive applications with special depop circuitry to eliminate speaker noise when exiting shutdown ode. The TPA711 is available in an 8-pin SOIC and the surface-mount PowerPAD MSOP package, which  educes board space by 50% and height by 40%.