【选型】可pin to pin替换TI OP07C的运放SGMOP07E，输入失调电压0.35uV且具有更宽工作温度

时间： 2020-08-07 来源：SGMICRO

技术问答

在测试设备等工业应用中，通常会用到高压、低噪声、低失调电压的运放来调理信号，TI的OP07C存在大量应用，为了提高国产化器件比例，降低供货渠道风险，需要国产化替代器件。

针对测试设备中高压、低噪声的运算放大器应用，国产圣邦微电子推出了高工作电压的低噪声运算放大器 SGMOP07E，采用CMOS工艺，轨到轨输出，采用3.6V至36V单电源或±1.8V至±18V双电源供电，具有600kHz的高增益带宽积、3V/us的压摆率和750uA静态电流，以下是两个运放的电气性能参数对比：

从以上参数对比可以看出SGMOP07E在增益带宽、封装等参数与OP07C基本一致，但输入失调电压、输入电压噪声、压摆率、工作温度范围等指标都优于OP07C。尤其是SGMOP07E输入失调电压只有OP07C的一半，可以降低运放本身误差对放大信号精度的影响；工作温度覆盖-40～125 ˚C，可以适用于多种工作环境，同时更宽的工作电压带来更好的系统兼容性。在ESD防护方面，SGMOP07E也有出色的表现，可以达到2KV HBM，高于OP07C的1KV HBM，提高器件的长期工作可靠性，两者封装同为SOIC-8，具体PIN脚定义如下图：

图1 SGMOP07（左）与OP07C（右）PIN脚对比

从上图对比可以看出SGMOP07E与OP07C封装和引脚定义基本一致，可以在不改动电路的前提下直接pin to pin替换，减少工程师替换设计工作量。

综上所述，圣邦微电子的高压精密运算放大器SGMOP07E不仅可以pin to pin替代TI的OP07C，还具有相对更低的输入失调电压、更宽的工作温度和更高的ESD等级，同时成本更具优势，是测试设备模拟小信号调理高压运算放大器的优秀解决方案。

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好运常伴吾 Lv8. 研究员 2020-08-07

学习了

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描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.

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