12-bit SAR ADC with flexible input mux
The MAX1281BEUP+ is a 12-bit SAR ADC with 300k samples per second over SPI. It integrates a 4- or 8-channel input multiplexer for pseudo-differential or single-ended operation.
Input configuration and reference options
The MUX-S/H-ADC architecture lets you select between 4 pseudo-differential or 8 single-ended inputs via software. The S/H-to-ADC ratio is 1:1, meaning each conversion samples a fresh input. The reference can be driven externally or taken from the internal bandgap, giving flexibility to match the input signal range to the ADC full-scale without extra components.
No last-time-buy or obsolescence risk is indicated.