资料介绍
Table of Contents
CN0289 Flexible, 4 mA-to-20 mA, Loop-Powered Pressure Sensor Transmitter with Voltage or Current Drive
OVERVIEW
The circuit is a robust and flexible 2 wire loop-powered current transmitter that converts the differential voltage output from a pressure sensor to a 4 mA-to-20 mA current output. The design is optimized for a wide variety of bridge based voltage or current driven pressure sensors, utilizes only four active devices, and has a total unadjusted error of less than 1%. The loop supply voltage can range from 12 V to 36 V. The input of the circuit is protected for ESD and voltages beyond the supply rail, making it ideal for loop powered industrial applications.
DEMO REQUIREMENTS
- EVAL-CN0289-EB1Z circuit evaluation board
- +7V to +24V power supply or equivalent power supply
- Agilent 3458A or equivalent Current meter
- Differential Pressure sensor or Equivalent Dual channel DC Signal Source
HARDWARE SETUP
Power Supply
- From +7V to +24V supply can be used to J2 for proper operation of the evaluation board
Input Signal
Using Actual Sensor
- V/Iforce is the sensor excitation or is being supplied either from current or voltage source.
Using Simulated Input Sensor
The following configuration can be used to simulate the sensor characteristic for evaluation pusposes.
- A dual power supply can be used to generate a common-mode voltage of 2.5 V from Vout1 and a 0 mV to 100 mV differential input voltage from Vout2 shown in the block diagram for test setup.
- A 3 kΩ at R_bridge simulates the bridge type sensor impedance.
Sensor Drive
- The circuit can be switched to the current or voltage drive configuration by moving S1 to the position labeled on the PCB.
Voltage Drive Configuration
- In the voltage drive mode with VDRIVE = 10 V, the supply voltage VLOOP or system supply must be greater than 10.2 V
Current Drive Configuration
- In the current drive mode, the supply voltage VLOOP or system supply must be greater than 11.2 V in order to maintain sufficient headroom.
Output Measurements
The output of the system can be measured in two ways, either through direct output current measurement or voltage output through the series resistor.
Voltage Measurement
- Voltage output measurement is done across a series 250ohms resistor that is be placed in series with the negative terminal of the power supply and the system ground loop
Current Measurement
- Current output measurement is done by connecting the positive terminal of the current meter at the system ground loop (negative terminal of J2) and the negative terminal of the meter connected to the negative terminal of the power supply.
SCHEMATICS, PCB LAYOUT, BILL OF MATERIALS
- Schematics (PDF)
- Bill of Materials(Excel)
- Layout Gerbers(ZIP)
- Assembly Drawing(PDF)
End of Document
- 电压输入两线制4-20mA输出隔离变送器
- 双通道两线制4-20mA输出回路供电隔离变送器
- 4至20mA环路传感器隔离式电源设计
- ISO的4-20mA电流环路信号隔离器 7次下载
- 传感器4-20 mA变送器板操作手册 20次下载
- CN0289 集成电压或电流驱动的灵活4 mA至20 mA环路供电压力传感器变送器
- CN0295 灵活的4 mA至20 mA压力传感器变送器,集成电压或电流驱动
- CN0382 采用低功耗、精密、24位-型ADC的隔离式4 mA至20 mA/HART工业温度和压力变送器
- AD693:环路供电4-20 mA传感器变送器数据表
- UG-250:16位、串行输入、环路供电4 mA至20 mA DAC评估板
- CN0295:灵活的4 mA至20 mA电压或电流驱动压力传感器变送器
- CN-0382: 采用低功耗、精密、24位Σ-型ADC的隔离式4 mA至20 mA/HART工业温度和压力变送器
- CN0289 设计和集成文件
- 由回路供电的 4-20mA 单芯片 RTD 传感器变送器参考设计 33次下载
- 工业电流输出压力传感器变送器,iec61000-4测试参考设计 16次下载
- 4到20ma电压是24V是什么问题 294次阅读
- 4-20ma压力传感器内部怎么供电 544次阅读
- 变送器为什么要用4~20mA电流 1565次阅读
- 使用4–20mA环路供电温度传感器 1637次阅读
- 针对HART支持的4mA至20mA输入优化电路设计 1049次阅读
- 压力传感器、压力换能器和压力变送器的区别 2050次阅读
- 构建4~20mA基于环路的温度监控电路 1896次阅读
- MAX12900高度集成的4-20mA传感器变送器,可节省20%空间、功耗降低50% 5703次阅读
- ADI:4-20mA低功耗、14位、过程控制电流环路发送器 3203次阅读
- 灵活的4mA至20mA压力传感器变送器,集成电压或电流驱动 4560次阅读
- 集成电压或电流驱动的灵活4mA至20mA环路供电压力传感器变送器 4071次阅读
- 14位4-20mA环路供电型热电偶温度测量系统电路图 6078次阅读
- 集成电压/电流驱动的灵活4~20mA环路供电压力传感器变送器 4344次阅读
- 具有HART接口的完整4mA至20mA环路供电现场仪器 6228次阅读
- 4mA至20mA压力传感器变送器,集成电压或电流驱动 1.2w次阅读
下载排行
本周
- 1HFSS电磁仿真设计应用详解PDF电子教程免费下载
- 24.30 MB | 128次下载 | 1 积分
- 2雷达的基本分类方法
- 1.25 MB | 4次下载 | 4 积分
- 3电感技术讲解
- 827.73 KB | 2次下载 | 免费
- 4从 MSP430™ MCU 到 MSPM0 MCU 的迁移指南
- 1.17MB | 2次下载 | 免费
- 5有源低通滤波器设计应用说明
- 1.12MB | 2次下载 | 免费
- 6RA-Eco-RA2E1-48PIN-V1.0开发板资料
- 35.59 MB | 2次下载 | 免费
- 7面向热插拔应用的 I2C 解决方案
- 685.57KB | 1次下载 | 免费
- 8爱普生有源晶体振荡器SG3225EEN应用于储能NPC、新能源
- 317.46 KB | 1次下载 | 免费
本月
- 12024年工控与通信行业上游发展趋势和热点解读
- 2.61 MB | 763次下载 | 免费
- 2HFSS电磁仿真设计应用详解PDF电子教程免费下载
- 24.30 MB | 128次下载 | 1 积分
- 3继电保护原理
- 2.80 MB | 36次下载 | 免费
- 4正激、反激、推挽、全桥、半桥区别和特点
- 0.91 MB | 32次下载 | 1 积分
- 5labview实现DBC在界面加载配置
- 0.57 MB | 21次下载 | 5 积分
- 6在设计中使用MOSFET瞬态热阻抗曲线
- 1.57MB | 15次下载 | 免费
- 7GBT 4706.1-2024家用和类似用途电器的安全第1部分:通用要求
- 7.43 MB | 14次下载 | 免费
- 8AD18学习笔记
- 14.47 MB | 8次下载 | 2 积分
总榜
- 1matlab软件下载入口
- 未知 | 935113次下载 | 10 积分
- 2开源硬件-PMP21529.1-4 开关降压/升压双向直流/直流转换器 PCB layout 设计
- 1.48MB | 420061次下载 | 10 积分
- 3Altium DXP2002下载入口
- 未知 | 233084次下载 | 10 积分
- 4电路仿真软件multisim 10.0免费下载
- 340992 | 191360次下载 | 10 积分
- 5十天学会AVR单片机与C语言视频教程 下载
- 158M | 183329次下载 | 10 积分
- 6labview8.5下载
- 未知 | 81578次下载 | 10 积分
- 7Keil工具MDK-Arm免费下载
- 0.02 MB | 73804次下载 | 10 积分
- 8LabVIEW 8.6下载
- 未知 | 65985次下载 | 10 积分
评论
查看更多