The onboard 10bit D/A converter supports ±560mV of offset correction and allows an independent offset value for each of the eight differential inputs. Meanwhile, a 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 A/D converter.
Also featured is an integrated LDO, providing a regulated 3V or 2.65V to power the sensors. The XR18910 is controlled via an I2C serial interface and typically consumes 457µA. A sleep mode reduces the consumption to 45µA.
