概要

Description

The ZSSC3018 is a sensor signal conditioner (SSC) integrated circuit for high-accuracy amplification and analog-to-digital conversion of differential or pseudo-differential input signals. Designed for high-resolution sensor module applications, the ZSSC3018 can perform offset, span, and 1st and 2nd order temperature compensation of the measured signal. Developed for correction of resistive bridge or absolute voltage sensors, it can also provide a corrected temperature output measured with an internal sensor. The measured and corrected sensor values are provided at the digital output pins, which can be configured as I2C (≤ 3.4MHz) or as SPI (≤ 10MHz). Digital compensation of signal offset, sensitivity, temperature, and non-linearity is accomplished via a 26-bit internal digital signal processor (DSP) running a correction algorithm. Calibration coefficients are stored on-chip in a highly reliable, non-volatile, multiple-time programmable (MTP) memory. Programming the ZSSC3018 is simple via the serial interface. The interface is used for the PC-controlled calibration procedure, which programs the set of calibration coefficients in memory. The ZSSC3018 provides accelerated signal processing, increased resolution, and improved noise immunity in order to support high-speed control, safety, and real-time sensing applications with the highest requirements for energy efficiency.

特長

  • Flexible, programmable analog front-end design, up to 18-bit analog-to-digital converter (ADC)
  • Fully programmable gain amplifier with gain range from 6.6 to 216 (linear)
  • Internal auto-compensated temperature sensor
  • Digital compensation of individual sensor offset
  • 1st and 2nd order digital compensation of sensor gain as well as of 1st and 2nd order temperature gain and offset drift
  • Programmable interrupt operation
  • High-speed sensing: e.g., 16-bit conditioned sensor signal measurement rate >500s-1
  • Typical sensor elements can achieve an accuracy of better than ±0.01% full-scale output

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IDT Sensor Signal Conditioner (SSC) Evaluation Kit Overview

A brief introduction and overview of IDT's sensor signal conditioner evaluation kits. Evaluation kits generally consist of three parts: a communication interface board,  a device board, and a sensor simulator board - all connected together. A sophisticated software GUI accompanies the kit, enabling an engineer to learn how to use the part rapidly, do quick prototyping, and practice calibrations.

Presented by David Grice, applications engineer at IDT. For more information about IDT's sensor signal conditioner products, visit https://www.idt.com/ssc