Dual 12-bit DAC with I²C — what the ratings mean for your BOM
The MAX5822LEUA+ is a 12-bit dual voltage-output DAC with I²C interface. Two independent DAC channels in an 8-uMAX/uSOP package provide two analog outputs. Output type is voltage-buffered — the DAC output drives a resistive or capacitive load directly without an external op-amp. Architecture is a string DAC topology, which gives monotonic performance and low glitch energy, important when the output feeds a precision reference or a servo loop that can't tolerate non-monotonic steps.
Sourcing and lifecycle — active, no LTB risk
Lifecycle status is Active per the manufacturer — no last-time-buy window, no end-of-life notice. That means you can qualify it into a new production BOM without planning a respin for obsolescence. The part is ROHS3 compliant, so it passes EU material restrictions as shipped.
Integration note — I²C bus and reference
Data interface is I²C — two wires (SCL, SDA) plus address pin(s) for bus sharing. Reference type is external: you supply the voltage reference at the REF pin. Differential output is No — each channel is single-ended, referenced to AGND. The INL/DNL spec is ±2 LSB / ±1 LSB max, which is typical for a 12-bit string DAC; integral linearity error stays within 2 LSB across the code range, so the transfer curve is straight enough for most set-point and trim applications.