Renesas RTD120D热电堆CO2探测器解决方案

Renesas公司的RTD120D是两路硅热电堆CO2探测器,采用TO-5封装,每个作用面积为1.2 × 1.2 mm. 探测器集成了用于光学（NDIR）CO2传感器的光学滤波器,具有卓越的性能,质量和使用寿命,使其成为在高温操作条件下要求高可靠性,高精度的各类工业,医疗及物联网应用的理想选择.瑞萨全新探测器可提供快速响应(其时间常数范围为18-25ms)及1.981-4.953的高信噪比,满足高可靠性关键任务应用的准确性需求.该设备经认证可用于高温环境,支持在高达125C的温度范围内运行.器件具有非常低的温度响应率-0.04%/C,对环境温度变化具有非常短的热冲击响应.与瑞萨微控制器(MCU)结合使用,客户能够为医疗或工业应用创建完整的环境传感解决方案.主要用在气体分析,火灾扑救,非接触温度传感器,地平线传感器和二氧化碳浓度监测仪.本文介绍了RTD120D主要特性和主要指标,以及评估板RTD120D-EVK主要特性,框图,电路图和PCB设计图.

The RTD120D is a two-channel silicon-basedthermopile detector in a TO-5 package. The deviceoffers a low-cost solution with high output and fastresponse, with a time constant of 25ms with Nitrogenencapsulation gas.

RTD120D主要特性:

▪ A two-channel silicon-based thermopile detector ina TO-5 package

▪ Five pin, 9.22mm TO-5 package

▪ Each small active area size is 1.2 × 1.2 mm

▪ Delivers a time constant of 25ms with Nitrogenencapsulation gas

▪ Very low Temperature Coefficient of Responsivityof -0.04%/C

▪ Very short thermal shock response to ambienttemperature change

▪ Internal 5% NTC chip thermistor provides ambientpackage temperature measurement

▪ Internal aperture precisely defines active area forapplications with FOV and/or spot size

requirements

RTD120D主要优势:

▪ Low cost with high sensitivity and high output

RTD120D应用:

▪ Gas analysis

▪ Fire suppression

▪ Non-contact temperature sensors

▪ Horizon sensors

▪ Capnography

图1,RTD120D检测电路综合图

RTD120D主要指标: