The extremely versatile input multiplexer on the LTC1859 16-bit SoftSpan ADC is software-configurable for unipolar,bipolar, single-ended or differential inputs. The LTC1859 achieves ±3LSB INL, the 14-bit LTC1858 ±1.5LSB and the 12-bit LTC1857 ±1LSB. Each channel or differential pair can be independently programmed. Conversions on any channel are unaffected by fault conditions up to ±25V on