2.5-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER

DESCRIPTION The TPA2031D1 is a 2.5-W high efficiency filter-free class-D Audio Power Amplifier in a 1,45 mm 1,45 mm wafer chip scale package (WCSP) that requires only three external components. Features like 88% efficiency, 75-dB PSRR, mproved RF-rectification immunity, and 8 mm 2 total PCB area make the TPA2031D1 class-D amp ideal for cellular handsets. 32 ms start-up time allows the TPA2031D1 to share the same GPIO enable/shutdown control as the CODEC without passing through the CODEC turn-on pop. In cellular handsets, the earpiece, speaker phone, and melody ringer CAN each be driven by the TPA2031D1. The TPA2031D1 allows independent gain while summing signals from separate sources, and has a low 36 V noise floor, A-weighted. By Texas Instruments