Analog Devices introduces the SSM2375 and SSM2380 Class-D audio amplifier modules for cellphones, smartphones, PMP, GPS devices and other portable devices.
The SSM2375 is a low-power stereo class-d amplifier with an I²C interface, which allows gain stages to be set from 1 dB to 24 dB (plus mute) in 47 distinct steps with no other external components required. The SSM2380, on the other hand, is a fully-integrated Class-D amplifier with single-pin 5-level gain setting in 3-dB stages from 0 dB to 12 dB. It offers greater than 98-dB SNR performance and at 215 Hz achieves an 80-dB PSRR (power-supply rejection ratio) that is 10 dB higher than the closest competing Class-D amplifier.
Analog Devices’ SSM2375 and SSM2380 are priced at $0.57 and 0.75 per 1,000, respectively.
