ADI ADA4254 高压低功耗可编增益仪表放大器解决方案
ADI公司的零飘移ADA4254 高压低功耗可编增益仪表放大器(PGIA),设计用于过程控制和工业应用.ADA4254具有12二进制加权增益,从1/16 V/V 到128 V/V和三个可缩放增益1 V/V, 1.25 V/V和1.375 V/V,最终有36个增益设定.器件的功耗仅为22mW,使得器件是需要精度,强劲和低功耗的工业系统的极佳选择.器件的输入的复接器提供±60 V,保护放大器高输入高阻抗,同时在两个输入源之前切换.此外,集成的电磁干扰(EMI)滤波器阻隔RF噪音对放大器敏感的输入影响.ADA4254的安全特性包括检测内部和外部的故障.串行接口(SPI)支持循环冗余位校验(CRC)误差检测,以保证鲁棒通信,这些特性使得获得系统安全完整性等级（SIL）证书.输入失调电压小于±14 μV,输入失调电压飘移小于±0.08 μV/℃,工作温度−40℃ 到 +105℃.主要用在通用过程控制前端,数据采集系统以及测量和测试系统.本文介绍了ADA4254主要特性,简化功能框图,多种应用电路以及评估板ADA4254RU-EBZ主要特性,电路图和材料清单.
The ADA4254 is a zero drift, high voltage, low power programmable gain instrumentation amplifier (PGIA) designed for process control and industrial applications. The ADA4254 features 12 binary weighted gains ranging from 1/16 V/V to 128 V/V and three scaling gain options of 1 V/V, 1.25 V/V, and 1.375 V/V, resulting in 36 possible gain settings. The power consumption of the ADA4254 is a mere 22 mW, making the device an excellent choice for industrial systems that demand precision, robustness, and low power.
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