產品詳情

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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技術文檔

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類型 標題 下載最新的英語版本 日期
* 數據表 LMP91200 Configurable AFE for Low Power Chemical Sensing Apps 數據表 (Rev. E) 2016年 2月 29日
技術文章 What can we learn for IIoT from the man who invented the Web? PDF | HTML 2016年 1月 12日
應用手冊 AN-2254 MSP430 Interface to LMP91200 Code Library (Rev. A) 2013年 5月 1日
更多文獻資料 傳感器模擬前端手冊 2012年 10月 30日
EVM 用戶指南 LMP91200 Sensor AFE Evaluation Board User's Guide (Rev. A) 2012年 5月 30日
EVM 用戶指南 LMP91200 Sensor AFE Evaluation Board User's Guide 2012年 5月 7日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

驅動程序或庫

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

支持的產品和硬件

支持的產品和硬件

產品
信號調節器
LMP91200 — 適用于低功耗 pH 傳感應用的集成 AFE
仿真模型

LMP91200 PSpice Transient Model (Rev. A)

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

LMP91200 TINA-TI Reference Design

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

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

SNAM131A.ZIP (54 KB) - TINA-TI Spice Model
下載
參考設計

TIDA-00561 — 無線 pH 傳感器發送器（兼容 SensorTag 2.0）參考設計

TIDA-00561 展示了如何構建用于過程控制的工業級無線 pH 變送器。該參考設計包括一個精心設計的 pH 前端，可通過其板載連接器直接連接到過程控制中使用的大多數 pH 探針。性能數據經過測試和表征（輸入范圍 0 至 14pH，整體測試精度 +/- 0.01pH），可確保滿足過程儀表的需求。

由于 TIDA-00561 外形尺寸和電氣連接與 TI SimpleLink? CC2650 SensorTag 生態系統兼容，因此只需進行簡單的固件更新，即可選擇無線連接技術：Bluetooth? 智能、ZigBee? 或 (...)

設計指南: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
TSSOP (PW) 16 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

推薦產品可能包含與 TI 此產品相關的參數、評估模塊或參考設計。

支持和培訓

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