RenesasZSSC3240传感器解决方案

RenesasZSSC3240电阻型传感器信号调理解决方案
Renesas公司的ZSSC3240是电阻型传感器信号调理集成电路(SSC),适用于桥式和半桥式传感器,以及外接电压源元件和单元件传感器(如Pt100和外部温度传感器二极管).传感器失调,灵敏度,温度飘移和非线性的数字补偿是通过26位数学核运行带有校正系数的修正算法来进行的,这些校正系统存储在非易失可编城存储器.而可编程集成传感器前端使得传感器具有优化性能,应用在各种领域.数字通信和校准接口包括高达
10MHz的SPI,标准,快和高速模式的I2C以及高达100kb/s的一线接口(OWI).支持不同传感器配置包括电阻桥或半桥,电阻驱动器串,支持Pt100.器件具有16位DAC和输出,支持4mA-20mA电流回路输出,支持
0V-10V绝对电压输出,片上电压稳压器用于传感器电源和IC工作,支持外接稳压器.器件具有可编24位传感器信号调理数学核和可编程非易失存储器(NVM).电源电压VDD为2.7V-5.5V,工作温度-40℃到125℃,支持传感器元件0.5kΩ到60kΩ.主要用在校准连续工作传感器,用于能效解决方案的智能数字传感器,压力流量和液面检测,工业应用如过程或工厂自动化,消费类电子/白色家电如HVAC,称重仪以及医疗应用如血压,连续智能健康监测器. 为您整理如下详细资料，本文介绍了ZSSC3240主要特性和物理特性,框图,基本应用框图和多种应用案例,以及评估板ZSSC324x EVB主要特性,实验室连接图,电路图.
The ZSSC3240 is a sensor signal conditioning IC (SSC) for highly accurate amp lifi cation, digitization, and sensor-specific correction of resistive sensor signals. The ZSSC3240 is suitable for bridge and half-bridge sensors, as well as external voltage-source element and single-element sensors (e.g., Pt100 and external temperature sensor diodes) powered by an on-chip current source. Digital compensation of the sensor offset, sensitivity, temperature drift, and non-linearity is accomplished via a 26-bit math core running a correction algorithm with calibration coefficients stored in a non-volatile, reprogrammable memory. The programmable, integrated sensor front-end allows optimally applying various sensors for a broad range of applications.
The ZSSC3240 provides measurement value readouts and programming capabilities via an I2C, SPI, or one-wire interface (OWI). Three different operation modes allow optimal development of digital,
digital-analog, and analog-output smart sensor modules including wake-up on request,
continuous-on/fast-response, and automatic/cyclic sensor measurement operations. Absolute and ratiometric voltage, current-loop, or interrupt analog outputs are supported by the ZSSC3240. The analog output options and digital interface options (for calibration and/or a digital application interface) can be combined.
ZSSC3240主要特性:
• Digital com munication and calibration interfaces
o SPI up to 10MHz
o I2C (Standard, Fast, and High-Speed Mode)
o One-wire-interface (OWI), up to 100kBit/s
• Accommodates nearly all resistive bridge sensor types (signal spans from 1mV/V up to 500mV/V)
• Supports diffe rent sensor element configurations:
o Resistive bridge or half-bridge
o Resistive divider string
o Voltage source
• On-chip temperature sensor
• External temperature sensing supported, e.g. sensor-bridge as temperature detector, external diode, etc. • Supp ort for Pt100
• Programmable 16-bit digital-to-analog-converter and output:
o (0V to 1V) or (0V to 5V) absolute voltage output
o VDD-ratiometric voltage output
o 4mA to 20mA current-loop output supported
o 0V to 10V absolute-voltage output supported
• On-chip voltage regulators for sensor supply, and IC operation
• Support for extra regulation by external transistor, for example JFET
• Programmable 24-bit sensor-signal-conditioning math core
• Reprogrammable, nonvolatile memory (NVM)
• Programmable measurem ent scheduler for continuous sensing applications, with optimized balance of o Energy consumption
o Output update rate
o Sensor-signal-conditioning accuracy
o Self-diagnostic coverage and system safety
• On-chip diagnostics:
o Sensor connection
o Broken-chip-check / chipping-check
o Memory integrity
ZSSC3240物理特性:
• Supply voltage, VDD: 2.7V to 5.5V; with external transistor, for example JFET: 5V to 48V
• Operating temperature: -40℃ to 125℃
• Supported sensor elements: 0.5kΩ to 60kΩ
• Available as die on wafers or 4 × 4 mm2 24-QFN with wettable flanks, allowing visual inspection of QFN reflow quality
ZSSC3240典型应用:
• Calibrated, continuously operating sensors with digital interface and/or analog output: (absolute or ratiometric) voltage or current loop output
•enable s smart, digital sensors for energy-efficient solutions
• Pressure, flow, and level sensing
• Industrial applications; e.g. process/factory automation
• Consumer / white goods, e.g. HVAC, weight sca les
• Medical applications, e.g. blood pressu re, continuous smart health monitors
图1.ZSSC3240框图
图2.ZSSC3240基本应用框图
图3.ZSSC3240典型应用案例
评估板ZSSC324x EVB
The ZSSC324x SSC Evaluation Kit is designed for sensor module evaluation, laboratory setup, and module calibration development for the ZSSC324x Sensor Signal Conditioner (SSC).
The main purpose of the ZSSC324x Evaluation Kit is to enable the communication between the user and
the ZSSC324x device with the GUI (Graphical User Interface). The ZSSC324x-GUI establishes the communication via a USB port (configured as a virtual COM port) to the SSC Communication Board (CB). The microcontroller on the SSC CB interprets these commands, converts them to the configured interface (I2C, SPI or OWI), and provides it to the ZSSC324x located on the ZSSC324x SSC Evaluation Board.
Almost all possible applications can be tested with the Evaluation Kit and the GUI, so that the customer can easily get the first experience and also evaluate in detail the ZSC324x functionalities。

评估板ZSSC324x EVB主要特性:
§ I2C, SPI or OWI communication interface enables quick and easy configuration and calibration of the ZSSC324x using the user’s computer.
§ Connections are provided on the ZSSC324x SSC Evaluation Board for user’s sensor module, which can be used instead of the SSC Sensor Replacement Board.
§ A potentiometer on the SSC Sensor Replacement Board controls a voltage that simulates a sensor signal ranging from 2mV to 110mV, which can be input to the analog frontend of the ZSSC324x (INP and INN pins) for evaluation of basic featur es or for demonstrating a “dry-run” calibration.
§ Modular design allows reuse of kit components for evaluation of select ZSSC324x products.
§ Clamshell 24-PQFN socket for ZSSC324x device under test (DUT) facilitates testing multiple DUTs without soldering.
§ Software is available for download from the Renesas web site
评估板ZSSC324x EVB包括:
§ ZSSC324x Evaluation Board -ZSSC324xEVB
§ SSC Communication Board - SSCCOMMBOARDV4P1C
§ SRB (Sensor Replacement Board) SSCSENSORREPBDV2P0
§ ZSSC324x 24-PQFN 4 × 4 mm Samples (5 pcs)
§ USB Cable
图4.评估板ZSSC324x EVB外形图
图5.评估板ZSSC324x EVB实验室连接图
图6.评估板ZSSC324x EVB电路图
图7.评估板ZSSC324x EVB PCB设计图。