IDT ZSSC3230容性传感器信号调理解决方案

IDT公司的ZSSC3230容性传感器信号调理器是CMOS集成电路,具有精确的电容/数字转换和容性传感器信号的传感器专用的修正.传感器失调,灵敏度和温度飘移是通过内部数字信号处理器进行数字补偿,该处理器运行修正算法,其修正系数存储在非易失多次编程(NVM)存储器.编程ZSSC3230是通过串行接口进行.接口由PC进行控制校正程序,它有一组存储器中的校正系数来编程. ZSSC3230容性传感器的容量高达30pF,其输出分辨率高达18位.它和单端容性传感器兼容. ZSSC3230提供加速的信号处理,增加分辨率和提高的抗噪声性,以支持高速控制,安全性和实时检测应用,并满足能效的最高要求.每秒1次取样时的低电流消耗为1.3μA.I2C接口支持标准模式(100kHz),快速模式(400kHz)和高速模式(3.4MHz),工作电压VDD为1.68V-3.6V,工作温度-40℃ 到125℃.主要用在湿度传感器,压力传感器,水平传感器,能效解决方案的智能数字容性传感器,消费类电子/白色家电如HVAC以及医疗电子设备.本文介绍了ZSSC3230主要特性,框图和基本应用框图,以及评估板ZSSC3230 EVK主要特性,电路图,材料清单和PCB设计图.
The ZSSC3230 is a CMOS integrated circuit for accurate capacitance-to-digital conversion and sensor-specific correction ofcapacitive sensor signals. Digital compensation of sensor offset,sensitivity, and temperature drift is accomplished via an internaldigital signal processor running a correction algorithm withcalibration coefficients stored in a nonvolatile, multiple-timeprogrammable (NVM) memory. Programming the ZSSC3230 issimple via the serial interface. The interface is used for the PCcontrolled　calibration procedure, which programs the set ofcalibration coefficients in memory. The ZSSC3230 is configurablefor capacitive sensors with capacitances up to 30pF and will　provide an output resolution that is scalable up to 18-bit. It iscompatible with single-ended capacitive sensors. Measured andcorrected sensor values can be output as I2C (≤ 3.4MHz).
The ZSSC3230 provides accelerated signal processing, increasedresolution, and improved noise immunity in order to support highspeedcontrol, safety, and real-time sensing applications with thehighest requirements for energy efficiency.
The ZSSC3...