Description

PDM Digital Input, Mono 2.5 W Class D Audio Amplifier Features: Filterless digital Class-D amplifier Pulse density modulation (PDM) digital input interface 2.7 W into 4 Ω load and 1.4 W into 8 Ω load at 5.0 V supply with <1% total harmonic distortion plus noise (THD + N) Available in 9-ball, 1.2 mm × 1.2 mm, 0.4 mm pitch WLCSP 93% efficiency into 8 Ω at full scale Output noise: 25 µV rms at 3.6 V, A-weighted THD + N: 0.005% at 1 kHz, 100 mW output power PSRR: 80 dB at 217 Hz, with dither input Quiescent power consumption: 5.1 mW (VDD = 1.8 V, PVDD = 3.6 V, 8 Ω + 33 µH load) Pop-and-click suppression Configurable with PDM pattern inputs Short-circuit and thermal protection with autorecovery Smart power-down when PDM stop condition or no clock input detected 64 × fS or 128 × fS operation supporting 3 MHz and 6 MHz clocks DC blocking high-pass filter and static input dc protection User-selectable ultralow EMI emissions and low latency modes Power-on reset (POR) Minimal external passive components