【选型】可Pin-Pin替换LM4040C25IDBZR的思瑞浦并联电压基准，具有0.2%的更高精度

时间： 2021-08-21 来源：世强

技术问答

某客户在其5G RRU产品中，选用了TI的LM4040C25IDBZR作为ADC采样的外部电压基准，但由于交期和价格原因，需求替代产品。本文重点推荐思瑞浦（3PEAK）并联电压基准 TPR6040F25-S3TR，可P2P替换LM4040C25IDBZR。二者电性能参数对比如下图1所示。

图1 TPR6040F25-S3TR与LM4040C25IDBZR的电性能参数对比

通过上图对比可知：

1、相比LM4040C25IDBZR，TPR6040F25-S3TR具有更高参考电压精度和更低温漂，有利于提高基准电压的精度。

2、LM4040C25IDBZR具有更低阴极电流和宽频带噪声，有利于降低功耗和输出噪声，而TPR6040F25-S3TR也同样具有μA等级电流，可以满足绝大部分应用。

3、在阴极基准电压和动态输出阻抗方面，二者相同，可以直接替代。

4、TPR6040F25-S3TR相比LM4040C25IDBZR具有更宽的工作温度，环境适应性和工作可靠性更高。

5、二者封装分别为SOT23-G和SOT-23-3，封装及Pin脚定义对比如下图2所示。

图2 TPR6040F25-S3TR和LM4040C25IDBZR封装及Pin脚定义对比

由上图可以看出：TPR6040F25-S3TR和LM4040C25IDBZR封装及Pin脚定义完全相同，在设计时可P2P兼容替换，无需改版，有利于缩短研发周期。

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数据手册 - 思瑞浦 - Rev.A.3 - 2022-12-01 PDF 英文下载查看更多版本

【应用】思瑞浦并联电压基准TPR6040F25-S3TR-S助力于快速反射镜设计，初始精度高达0.1%

思瑞浦的并联电压基准TPR6040F25-S3TR-S是一种并联型电压基准芯片，具有精度高、稳定性好等特点，在快速反射镜项目中有着广泛的应用。本文将介绍电压基准TPR6040F25-S3TR-S在快速反射镜的应用。

应用方案发布时间 : 2023-03-31

TPR6040 High-Precision Shunt Voltage Reference

型号- TPR6040F20-S3TR,TPR6040,TPR6040F33-S3TR,TPR6040F40-S3TR,TPR6040F30-S3TR,TPR6040F20,TPR6040F33,TPR6040F50-S3TR,TPR6040F25-S3TR,TPR6040FXX-S3TR,TPR6040F25,TPR6040F50,TPR6040F40,TPR6040F30

数据手册 - 思瑞浦 - Rev.A.3 - 2022-12-01 PDF 英文下载查看更多版本