TIDA-010988
具有单电源的八通道 V 和 I 组合模拟输入模块参考设计
TIDA-010988
概述
The TIDA-010988 is an eight-channel analog input module with 2-terminal inputs for industrial automation applications. Each channel supports software-selectable voltage range of 0V to 10V and ±10V, as well as current range of 4mA to 20mA, ±20mA. The design implements a high-density isolated analog input module powered from either a single 24V field supply or 5V USB. By using the ADS125H18 chip-select forwarding feature, the design implements a shared SPI architecture that reduces the required digital isolation channel count. The system is designed to achieve over temperature system absolute accuracy error better than 0.1% for voltage input and 0.2% for current input.
特性
- Eight identical 2-terminal analog input channels
- Per-channel support for voltage (0V to 10V, ±10V) and current (4mA to 20mA, ±20mA) input
- Photo‑MOS based voltage and current switching with open‑wire detection on each channel
- Integrated PTC, TVS, and Zener diodes input protection for robust industrial interfaces
- Single 24V supply or 5V USB supply for evaluation
- System absolute accuracy error:
- Over temperature (–40°C to 125°C), Voltage: <0.1%, Current: <0.2%
- Room temperature (25°C), Voltage: <0.05%, Current: <0.15%
我们开发的全面组装电路板仅用于测试和性能验证，不可用于销售。
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| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 设计指南 | Eight-Channel V and I Combined Analog Input Module With Single Supply Reference Design | PDF | HTML | 2026-5-22 |