Sensor interface offers high channel count for infrastructure
25 April 2016 
The sensor interface from Exar provides 14bit signal path linearity and is designed to connect analog sensors to a microcontroller or FPGA with an embedded ADC.
The onboard 10bit DAC offers ±560mV of offset correction and has an independent offset value for each of the eight differential inputs. The programmable gain instrumentation amplifier offers eight fixed-gain settings (from 2.0 to 760V/V), ensuring the amplified sensor signal falls within the optimum input range of the downstream ADC, claims the company. The integrated LDO provides a regulated 3.0 or 2.65V voltage to power the sensors. The device is controlled via an I2C serial interface and typically consumes 457µA of supply current and offers a sleep mode which reduces the supply current to 45µA.
It is available in a RoHS-compliant, halogen free QFN package.