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