The SSM2517 is a filterless digital Class-D amplifier with PDM digital input interface. It can drive 4-ohm load up to 2.4W and 8-ohm load up to 1.38W with 5.0V supply voltage. The total harmonic distortion plus noise (THD + N) is less than 1% and efficiency reaches 92%. Quiescent power consumption is only 10.4mW.
The SSM2517 from Analog Devices is a filter‑less digital Class‑D audio amplifier that accepts a pulse‑density‑modulation (PDM) digital input. It integrates a DAC, power stage and digital interface on a single chip, delivering up to 2.4 W into a 4 Ω load while consuming only 10.4 mW quiescent power.
The device operates from a PVDD supply of 2.5 V‑5.5 V and a VDD supply of 1.62 V‑3.6 V, supports sample rates of 64× or 128× the master clock, and includes features such as smart power‑down, pop‑and‑click suppression, and an ultralow‑EMI mode. It is specified for industrial temperature ranges (‑40 °C to +85 °C) and is packaged in a 9‑ball wafer‑level chip‑scale package.
| Efficiency | 86 % |
|---|---|
| PVDD Supply Voltage Range | 2.5 V to 5.5 V |
| Quiescent Power Consumption | 10.4 mW (VDD = 1.8 V, PVDD = 3.6 V, 8 Ω + 33 µH load) |
| Operating Temperature Range | ‑40 °C to +85 °C |
PVDD can operate from 2.5 V to 5.5 V.
Standby current is 57 µA at VDD = 1.8 V with a 64× sample rate.
The SSM2517 is specified for –40 °C to +85 °C.