Filter for the signal chain
The MAX7412EUA+T from Maxim Integrated is a 5th-order elliptic low-pass switched-capacitor filter with a 15 kHz cutoff frequency. It operates from a 2.7 V to 3.6 V supply and comes in an 8-uMAX/uSOP surface-mount package. The elliptic (Cauer) response gives you a steep roll-off beyond the passband — useful for anti-aliasing before an ADC or reconstruction after a DAC where you need to suppress out-of-band noise quickly. The trade-off is passband ripple, so check your signal's amplitude flatness budget before committing the BOM.
Lifecycle and compliance
It is ROHS3 compliant, which simplifies EU and RoHS-restricted-market BOM reviews.
