FEATURES
Filterless Class-D amplifier with spread-spectrum Σ-Δ modulation 3 W into 3 Ω load and 1.4 W into 8 Ω load at 5.0 V supply with <1% total harmonic distortion (THD + N) 93% efficiency at 5.0 V, 1.4 W into 8 Ω speaker >100 dB signal-to-noise ratio (SNR) High PSSR at 217 Hz: 80 dB Flexible gain adjustment pin: 0 dB to 12 dB in 3 dB steps Fixed input impedance: 80 kΩ User-selectable ultralow EMI emissions mode Single-supply operation from 2.5 V to 5.5 V 20 nA shutdown current Short-circuit and thermal protection with autorecovery Available in 9-ball, 1.5 mm × 1.5 mm WLCSP Pop-and-click suppression APPLICATIONS
Mobile phones MP3 players Portable electronics GENERAL DESCRIPTION
It is capable of delivering 3 W of continuous output power with <1% THD + N driving a 3 Ω load from a 5.0 V supply. The SSM2375 features a high efficiency, low noise modulation scheme that requires no external LC output filters. The modulation continues to provide high efficiency even at low output power. The SSM2375 operates with 93% efficiency at 1.4 W into 8 Ω or with 85% efficiency at 3 W into 3 Ω from a 5.0 V supply and has an SNR of >100 dB.
Analog Devices
