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LMP91200

現行

適合低功耗 pH 感測應用的整合式 AFE

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產品規格表

LMP91200

現行
產品規格表 立即訂購

產品詳細資料

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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類型 標題 日期
* Data sheet LMP91200 Configurable AFE for Low Power Chemical Sensing Apps datasheet (Rev. E) 2016年 2月 29日
Technical article What can we learn for IIoT from the man who invented the Web? PDF | HTML 2016年 1月 12日
Application note AN-2254 MSP430 Interface to LMP91200 Code Library (Rev. A) 2013年 5月 1日
More literature Sensor Analog Front Ends Brochure 2012年 10月 30日
EVM User's guide LMP91200 Sensor AFE Evaluation Board User's Guide (Rev. A) 2012年 5月 30日
EVM User's guide LMP91200 Sensor AFE Evaluation Board User's Guide 2012年 5月 7日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

驅動程式或資料庫

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

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產品
訊號調節器
LMP91200 — 適合低功耗 pH 感測應用的整合式 AFE
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模擬型號

LMP91200 PSpice Transient Model (Rev. A)

SNAM129A.ZIP (25 KB) - PSpice Model
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模擬型號

LMP91200 TINA-TI Reference Design

SNAM130.TSC (395 KB) - TINA-TI Reference Design
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模擬型號

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

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

TIDA-00561 — 無線 pH 感測器發射器 (適用於 SensorTag 的 DevPack) 參考設計

TIDA-00561 shows how to build an industrial-grade wireless pH transmitter for process control. This reference design includes a designed pH front-end which can be connected directly via its onboard connector to most pH probes used in process control. The performance data was tested and (...)
Design guide: PDF
電路圖: PDF
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TSSOP (PW) 16 檢視選項
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