FEATURES
Filterless Class-D amplifier with built-in output stage 2 W into 4 Ω and 1.4 W into 8 Ω at 5.0 V supply Ultralow idle current with load resistance >87% efficiency at 5.0 V, 1.4 W into 8 Ω speaker Better than 96 dB SNR (signal-to-noise ratio) Available in 16-lead, 3 mm × 3 mm LFCSP Single-supply operation from 2.5 V to 5.0 V 20 nA ultralow shutdown current Short-circuit and thermal protection Pop-and-click suppression Built-in resistors reduce board component count Default fixed 18 dB gain and user-adjustable PDM modulation offers lower EMI radiated emissions compared to other Class-D architectures. Shutdown is enabled by applying a logic low to the SD pin. The architecture of the device allows it to achieve a very low level of pop and click to minimize voltage glitches at the output during turn-on and turn-off, thereby reducing audible noise on activation and deactivation. The fully differential input of the SSM2306 provides excellent rejection of common-mode noise on the input.
Analog Devices
