12-bit SAR ADC with I²C — what it brings to the bus
Supply rails are clean: both analog and digital run from a single 5V supply, which simplifies power routing on mixed-signal boards. The operating temperature range of -40°C to 85°C covers industrial environments — think outdoor telecom cabinets, factory-floor instrumentation, or HVAC controller boards that see seasonal extremes.
Input configuration and reference — two decisions that matter
The input type can be set as differential (one channel) or single-ended (two channels). Differential mode rejects common-mode noise on long sensor leads — useful for thermocouple or bridge-type measurements where the signal is small and the environment is electrically noisy. Single-ended mode doubles the channel count for monitoring multiple DC voltages (supply rails, potentiometer wipers, panel-mount sensors) without adding an external mux.
Lifecycle and compliance — active, no obsolescence concern
The MAX11644EUA+T is listed as Active with ROHS3 compliance. For new designs or production replenishment, the part is available through independent distribution and can be quoted to order.