SAR ADC with flexible input mux
The LTC1199IMS8#PBF is a 10-bit successive-approximation-register (SAR) ADC from Analog Devices that samples at 450k samples per second over an SPI digital interface. Its input multiplexer accepts either differential or single-ended signals — one channel in differential mode or two channels in single-ended mode — so the same part handles bridge sensors and ratiometric measurements without an external mux. The SAR architecture gives deterministic conversion time: each sample completes in a fixed number of clock cycles, which matters for time-critical control loops where a pipeline ADC's variable latency would add jitter.
Single-supply rail and industrial temperature grade
Both the analog and digital supply pins run from a common 4 V to 6 V rail, which simplifies the power tree — no separate AVDD and DVDD regulators are needed. The 8-MSOP package (3.00 mm body width) fits tight layouts where a wider SOIC would crowd adjacent passives. The external reference input lets the user set the full-scale range to match the sensor's output swing, preserving the 10-bit resolution across the signal of interest.