1B22: Programmable, Isolated Voltage-to-Current Converter

The 1B22 is an isolated voltage-to-current converter that incorporates transformer isolation to achieve high performance and automated surface mount manufacturing for low cost and increased reliability. Designed for industrial applications, it is especially suited for harsh environments with extremely high common mode interference. With programmable inputs and outputs, the 1B22 provides an unbeatable combination of versatility and performance in a compact plastic package.

Applications

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

1B22 特点

Internal Isolated Loop Supply Drives 1000 Ω Load
Pin Programmable Inputs: 0 V to +5 V or 0 V to +10 V
Pin Programmable Outputs: 4 to 20 mA or 0 to 20 mA
High CMV Isolation: 1500 V RMS
Normal-Mode Output Protection: 240 V RMS
High Accuracy
Low Offset Tempco: ±300nA/°C
Low Gain Tempco: ±50ppm/°C
Low Nonlinearity: ±0.02%
High CMR: 90dB min
Small Package: 1.0"x2.10"x0.35"
Meets IEEE std. 472: CMV Transient Protection (SWC)

1B22 功能框图

1B22 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
1B22AN	量产	PLASTIC DIP	12	商业