ZHCSSK2D October   2006  – October 2024 XTR111

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Pin Configurations and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Explanation of Pin Functions
      2. 6.3.2 Dynamic Performance
      3. 6.3.3 External Current Limit
      4. 6.3.4 External MOSFET
      5. 6.3.5 Output Error Flag and Disable Input
      6. 6.3.6 Voltage Regulator
      7. 6.3.7 Level Shift of 0V Input and Transconductance Trim
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Input Voltage
      2. 7.1.2 Error Flag Delay
      3. 7.1.3 Voltage Output Configuration
      4. 7.1.4 4mA-to-20mA Output
    2. 7.2 Typical Applications
      1. 7.2.1 0mA–20mA Voltage-to-Current Converter
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 Additional Applications
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 Package and Heat Dissipation
        2. 7.4.1.2 Thermal Pad Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 第三方米6体育平台手机版_好二三四免责声明
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 接收文档更新通知
    4. 8.4 支持资源
    5. 8.5 Trademarks
    6. 8.6 静电放电警告
    7. 8.7 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

6.1 Overview

The XTR111 is a voltage-controlled current source capable of delivering currents from 0mA to 32mA. The primary intent of the XTR111 is to source the commonly-used industrial current ranges of 0mA to 20mA or 4mA to 20mA. The performance is specified for a supply voltage of up to 40V. The maximum supply voltage is 44V. The voltage-to-current ratio is defined by an external resistor, RSET; therefore, the input voltage range can be freely set in accordance with application requirements. The output current is cascoded by an external P-channel MOSFET transistor for large voltage compliance extending below ground, and for easy power dissipation. This arrangement provides excellent suppression of typical interference signals from the industrial environment because of the extremely high output impedance and wide voltage compliance.

An error detection circuit activates a logic output (error flag pin, EF) in case the output current cannot correctly flow. The EF pin indicates a wire break, high load resistor, or loss of headroom for the current output to the positive supply. The output disable (OD) pin provided can be used during power-on, multiplexing, and other conditions where the output presents no current. The OD pin has an internal pullup that causes the XTR111 to come up in output disable mode unless the OD pin is tied low.

The onboard voltage regulator can be adjusted from 3V to 15V and delivers up to 5mA load current. The voltage regulator is intended to supply signal conditioning and sensor excitation in 3-wire sensor systems. Voltages greater than 3V can be set by a resistive divider.

Figure 6-1 shows the basic connections. Input voltage VVIN reappears across RSET and controls 1/10 of the output current. The I-Mirror has a precise current gain of 10. This configuration has a transfer function of:

Equation 1. I O U T = 10   × V V I N R S E T

Set the voltage regulator output to a range of 3V to 12V by selecting R1 and R2 using the following equation:

Equation 2. V R E G F = 3V × ( R 1 + R 2 ) R 2
XTR111 Basic Connection for 0mA to 20mA Related to a 0V-to-5V Signal Input With the Voltage Regulator Set to a 5V Output Figure 6-1 Basic Connection for 0mA to 20mA Related to a 0V-to-5V Signal Input With the Voltage Regulator Set to a 5V Output
千亿体育app官网登录(中国)官方网站IOS/安卓通用版/手机APP | 米乐app下载官网（中国）|ios|Android/通用版APP最新版 | 米乐|米乐·M6（中国大陆）官方网站 | 千亿体育登陆地址 | 华体会体育（中国）HTH·官方网站 | 千赢qy国际_全站最新版千赢qy国际V6.2.14安卓/IOS下载 | 18新利网v1.2.5|中国官方网站 | bob电竞真人（中国官网）安卓/ios苹果/电脑版【1.97.95版下载】 | 千亿体育app官方下载(中国)官方网站IOS/安卓/手机APP下载安装 |