Exar Corporation has announced the XR18910, the latest addition to its family of analog front end sensor interfaces, which integrates high channel count and functionality in a tiny 3.5mm x 3.5mm footprint. The XR18910 provides 14-bit signal path linearity and is designed to connect analog sensors to a microcontroller (MCU) or field-programmable gate array (FPGA) with an embedded ADC.
The onboard 10-bit DAC offers ±560mV of offset correction and allows an independent offset value for each of the eight differential inputs. The programmable gain instrumentation amplifier offers eight fixed-gain settings (from 2V/V to 760V/V), ensuring the amplified sensor signal falls within the optimum input range of the downstream ADC. The integrated LDO provides a regulated 3V or 2.65V voltage to power the sensors. The XR18910 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 only 45µA.
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Source: Exar Corporation.