SSM2375

Preliminary Technical Data FEATURES Filterless Class-D r with spread-spectrum Σ-∆ 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) 93% cy at 5.0 V, 1.4 W into 8 Ω speaker >100 dB signal-to-noise ratio (SNR) High PSRR @ 217 Hz: 80dB Flexible gain adjustment pin: 0dB to 12dB in 3dB steps Fixed Input Impedance, 80kΩ 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 auto recovery Available in 9-ball, 1.5 mm × 1.5 mm WLCSP Pop-and-click suppression Filterless High Efficiency Mono 3 W Class-D Audio Amplifier SSM2375 www.DataSheet4U.com Spread-spectrum pulse density modulation (PDM) is used to provide lower EMI-radiated emissions compared with other e inherent randomized nature of Class-D architectures. spread-spectrum PDM eliminates clock intermodulation (beating e ect) of several ampli ers in close proximity. SM2375 includes an optional modulation select pin (ultralow EMI emission mode) that signi cantly reduces the radiated emissions at the Class-D outputs, particularly above 100 MHz and can pass FCC Class B radiated emissions testing with 50cm unshielded speaker cable without any external ltering. evice also includes a highly exible gain select pin that only requires one series resistor in order to select between 0dB, 3dB, 6dB, 9dB, or 12dB. e bene t of this is to improve gain matching between multiple SSM2375 devices...