1B21: Isolated, Loop-Powered Voltage-to-Current Converter

The 1B21 is an isolated voltage-to-current converter that incorporates a unique circuit design utilizing transformer based isolation and automated surface mount manufacturing technology. It provides an unbeatable combination of versatility and performance in a compact plastic package. Designed for individual applications, it is especially suited for harsh environments with extremely high common-mode interference.

Applications

• Multichannel Process Control
• D/A Converter - Current Loop Interface
• Analog Transmitters and Controllers
• Remote Data Acquisition System

1B21 特点

• Wide Input Range: 0-1V to 0-10V
• High CMV Isolation: 1500V rms
• Programmable Output Ranges: 4mA to 20mA 0 to 20mA
• Load Resistance Range: 0 to 1.35kΩ max
• High Accuracy
  Low Offset Tempco: ±300nA/°C
  Low Gain Tempco: ±50ppm/°C
  Low Nonlinearity: ±0.02%
  High CMR: 90dB min
• Small Package: 0.7"x2.1"x0.35"
• Meets IEEE std. 472: Transient Protection (SWC)

1B21 功能框图

1B21 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
1B21AN	量产	PLASTIC DIP	8	商业

1B21 应用技术支持与电子电路设计开发资源下载

1. 1B21 数据手册DataSheet 下载 . PDF
2. ADI 模拟器件公司比较器产品选型指南 . PDF
3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF