What the 36 dB noise reduction does in the audio path
The MAX9890BETA+T applies 36 dB of noise reduction across a 2-channel analog audio path — enough to drop audible hiss and background noise below the noise floor of most Class-D amplifier stages, so the system meets the SNR target without a separate DSP or codec.
Package and board-fit for the 8-TDFN
8-WDFN exposed pad package, supplier device package 8-TDFN 3x3 mm — the exposed paddle under the package needs a thermal via array to the ground plane to pull heat from the die, and the pad must be soldered to the same ground as the analog return to keep the noise floor low. Surface-mount only; the 0.65 mm typical pitch means a standard 1-oz copper board with a soldermask-defined pad handles the footprint without micro-vias.
Active lifecycle and sourcing posture
ROHS3 compliant, so the part ships on a tape-and-reel or cut-tape reel without requiring a waiver for lead-free assembly.