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LMP91200

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适用于低功耗 pH 传感应用的集成 AFE

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数据表

LMP91200

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产品详情

Number of input channels 1 Features Current Sources (iDACs), PGA Operating temperature range (°C) -40 to 125 Vs (min) (V) 1.8 Vs (max) (V) 6 Interface type Serial SPI Rating Catalog
Number of input channels 1 Features Current Sources (iDACs), PGA Operating temperature range (°C) -40 to 125 Vs (min) (V) 1.8 Vs (max) (V) 6 Interface type Serial SPI Rating Catalog
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Active Guarding
  • Key Specifications
    Unless otherwise noted, typical values at
    TA = 25°C, VS = (VDD-GND) = 3.3 V
    • pH Buffer Input Bias Current (0 < VINP < 3.3 V)
      • Maximum at 25°C: ±125 fA
      • Maximum at 85°C: ±445 fA
    • pH Buffer Input Bias Current
      (–500 mV < VINP– VCM < 500 mV),
      VS = (VDD – GND) = 0 V
      • Maximum at 25°C: ±600 fA
      • Maximum at 85°C: ±6.5 pA
    • pH Buffer Input Offset Voltage: ±200 µV
    • pH Buffer Input Offset Voltage Drift: ±2.5 µV/°C
    • Supply Current: 50 µA
    • Supply Voltage: 1.8 V to 5.5 V
    • Operating Temperature Range: –40°C to 125°C
    • Package: 16-Pin TSSOP
  • Active Guarding
  • Key Specifications
    Unless otherwise noted, typical values at
    TA = 25°C, VS = (VDD-GND) = 3.3 V
    • pH Buffer Input Bias Current (0 < VINP < 3.3 V)
      • Maximum at 25°C: ±125 fA
      • Maximum at 85°C: ±445 fA
    • pH Buffer Input Bias Current
      (–500 mV < VINP– VCM < 500 mV),
      VS = (VDD – GND) = 0 V
      • Maximum at 25°C: ±600 fA
      • Maximum at 85°C: ±6.5 pA
    • pH Buffer Input Offset Voltage: ±200 µV
    • pH Buffer Input Offset Voltage Drift: ±2.5 µV/°C
    • Supply Current: 50 µA
    • Supply Voltage: 1.8 V to 5.5 V
    • Operating Temperature Range: –40°C to 125°C
    • Package: 16-Pin TSSOP

The LMP91200 device is a sensor AFE for use in low-power, analytical-sensing applications. The LMP91200 is designed for 2-electrode sensors. This device provides all of the functionality needed to detect changes based on a delta voltage at the sensor. Optimized for low-power applications, the LMP91200 works over a voltage range of 1.8 V to 5.5 V. With its extremely low input bias current it is optimized for use with pH sensors. Also, in absence of supply voltage the very low input bias current reduces degradation of the pH probe when connected to the LMP91200. Two guard pins provide support for high parasitic impedance wiring. Depending on the configuration, total current consumption for the device is 50 µA while measuring pH. Available in a 16-pin TSSOP package, the LMP91200 operates from –40°C to +125°C.

The LMP91200 device is a sensor AFE for use in low-power, analytical-sensing applications. The LMP91200 is designed for 2-electrode sensors. This device provides all of the functionality needed to detect changes based on a delta voltage at the sensor. Optimized for low-power applications, the LMP91200 works over a voltage range of 1.8 V to 5.5 V. With its extremely low input bias current it is optimized for use with pH sensors. Also, in absence of supply voltage the very low input bias current reduces degradation of the pH probe when connected to the LMP91200. Two guard pins provide support for high parasitic impedance wiring. Depending on the configuration, total current consumption for the device is 50 µA while measuring pH. Available in a 16-pin TSSOP package, the LMP91200 operates from –40°C to +125°C.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 LMP91200 Configurable AFE for Low Power Chemical Sensing Apps 数据表 (Rev. E) 2016年 2月 29日
技术文章 What can we learn for IIoT from the man who invented the Web? PDF | HTML 2016年 1月 12日
应用手册 AN-2254 MSP430 Interface to LMP91200 Code Library (Rev. A) 2013年 5月 1日
更多文献资料 传感器模拟前端手册 2012年 10月 30日
EVM 用户指南 LMP91200 Sensor AFE Evaluation Board User's Guide (Rev. A) 2012年 5月 30日
EVM 用户指南 LMP91200 Sensor AFE Evaluation Board User's Guide 2012年 5月 7日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

驱动程序或库

SNAC044 — Associated Files for Application Note MSP430 Interface to LMP91200 Code Library

支持的产品和硬件

支持的产品和硬件

产品
信号调节器
LMP91200 — 适用于低功耗 pH 传感应用的集成 AFE
下载
仿真模型

LMP91200 PSpice Transient Model (Rev. A)

SNAM129A.ZIP (25 KB) - PSpice Model
下载
仿真模型

LMP91200 TINA-TI Reference Design

SNAM130.TSC (395 KB) - TINA-TI Reference Design
下载
仿真模型

LMP91200 TINA-TI Transient Spice Model (Rev. A)

SNAM131A.ZIP (54 KB) - TINA-TI Spice Model
下载
参考设计

TIDA-00561 — 无线 pH 传感器发送器（兼容 SensorTag 2.0）参考设计

TIDA-00561 展示了如何构建用于过程控制的工业级无线 pH 变送器。该参考设计包括一个精心设计的 pH 前端，可通过其板载连接器直接连接到过程控制中使用的大多数 pH 探针。性能数据经过测试和表征（输入范围 0 至 14pH，整体测试精度 +/- 0.01pH），可确保满足过程仪表的需求。

由于 TIDA-00561 外形尺寸和电气连接与 TI SimpleLink™ CC2650 SensorTag 生态系统兼容，因此只需进行简单的固件更新，即可选择无线连接技术：Bluetooth® 智能、ZigBee® 或 (...)

设计指南: PDF
原理图: PDF
封装 引脚 下载
TSSOP (PW) 16 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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