The TPA0242 is a stereo audio power amplifier in a 24-pin TSSOP thermally-enhanced package capable of delivering 2.8 W of continuous RMS power per channel into 3- loads. This device minimizes the number of external components needed, which simplifies the design and frees up board space for other features. When driving 1 W into 8- speakers, the TPA0242 has less than 0.22% THD+N across its specified frequency range. The integrated depop circuitry virtually eliminates transients that cause noise in the speakers. Amplifier gain is controlled by a dc voltage input on the VOLUME terminal. There are 31 discrete steps covering the range of 20 dB (maximum volume setting) to -40 dB (minimum volume setting) in 2 dB steps. When the VOLUME terminal exceeds 3.54 V, the device is muted. An internal input MUX allows two sets of stereo inputs to the amplifier. The HP/LINE terminal allows the user to select which MUX input is active regardless of whether the amplifier is in single-ended (SE) or bridge-tied load (BTL) mode. In notebook applications, where internal speakers are driven as BTL and the line outputs (often headphone drive) are required to be SE, the TPA0242 automatically switches into SE mode when the SE/BTL input is activated, and this effectively reduces the gain by 6 dB.