TPA721

The TPA721 is a bridge-tied load (BTL) audio power amplifier developed especially for low-voltage applications here internal speakers are required. Operating with a 3.3-V supply, the TPA721 can deliver 250-mW of ontinuous power into a BTL 8- load at less than 0.6% THD+N throughout voice band frequencies. Although his device is characterized out to 20 kHz, its operation was optimized for narrower band applications such as ireless communications. The BTL configuration eliminates the need for external coupling capacitors on the utput in most applications, which is particularly important for small battery-powered equipment. This device eatures a shutdown mode for power-sensitive applications with a supply current of 7 mA during shutdown. The TPA721 is available in an 8-pin SOIC surface-mount package and the surface-mount PowerPAD MSOP, which educes board space by 50% and height by 40%.