The ZSSC3027 from ZMDI is a 16-bit sensor signal conditioning IC (SSC) with an integrated 18-bit digital signal processor (DSP) for linearisation and calibration functions. It is optimised for high-resolution industrial, consumer and medical applications.
Special features for battery-driven, low-power devices include 930 μA typical overall current consumption, 20 nA typical sleep mode current, and a 1,7 to 3,6 V power supply range. The IC features an intelligent power saving scheme to ensure lowest overall current consumption and an internal sensor supply regulator with an excellent power supply rejection ratio (PSRR), eliminating the need for an external buffer capacitor.
Digital compensation of signal offset, sensitivity, temperature and non-linearity is accomplished via an internal correction algorithm with coefficients stored on-chip in a non-volatile, multiple-time programmable memory. Programming is simple via serial interface with the PC-controlled calibration software provided in ZMDI’s evaluation kit.
The measured and corrected bridge values are provided at the digital output pins as SPI or I²C. The device can also provide a corrected temperature output measured with an internal sensor.
The ZSSC3027’s output is an almost noise-free 16-bit signal, which is well suited for the design of high-precision measurement systems, including barometric altitude measurement used in portable navigation or emergency call systems, altitude measurement for car navigation, pressure measurements inside hard disks, and weather forecasting equipment. High-precision medical applications include medical gas control, medical infusion pumps, ambulatory non-invasive pump systems and occlusion detection systems.
The ZSSC3027 is in full production and is available as die for wafer bonding. Die, samples and wafers are available.
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