The MAX98090AETL+T: ROHS3 compliant per the manufacturer's declaration, which covers the current EU RoHS exemption list — no separate exemption expiry to track on this part.
Audio chain parametrics — 24-bit, 99/102 dB SNR
This is a 24-bit stereo audio codec with two ADCs and two DACs, supporting a full-duplex stereo I²S path. The 99 dB SNR on the ADC side and 102 dB on the DAC side set the noise floor for the analog front-end and output stage — the DAC figure is the tighter link in the signal chain, so the system dynamic range is bounded by the ADC at 99 dB. The data interface is I²C for control register writes — the audio data itself travels over a separate I²S bus, so the codec fits into a two-wire control topology common on application processors and SoCs.
Supply rails and the dual-voltage domain
This split lets the codec interface directly with a 1.8 V core logic rail and a separate 3.3 V analog rail, or a 1.2 V core with a 1.8 V I/O — the I/O supply flexibility covers both legacy 3.3 V and modern 1.8 V host interfaces without a level translator.
Package and thermal pad — 40-TQFN 5x5 mm
Housed in a 40-lead WFQFN with an exposed pad (5x5 mm body, supplier package 40-TQFN). The 5x5 mm footprint fits a compact audio sub-system on a four-layer board without crowding the decoupling capacitors.
Temperature grade — industrial range
No AEC-Q grade is listed, so it is not qualified for under-hood or chassis-mounted automotive use.