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LMP91200MT/NOPB

Data Conversion ICs - Various Int AFE for Lo-Power pH Sensing App

  • Package/Case :
  • TSSOP-16
  • Product Categories :
  • Data Conversion ICs - Various
  • RoHs Status:
  • Rohs
  • Marking Code:
  • LMP912 00MT
  • In-stock:
  • 50

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LMP91200MT/NOPB Product Details

The LMP91200MT/NOPB device is a sensor AFE for use in low-power, analytical-sensing applications. The LMP91200MT/NOPB 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 LMP91200MT/NOPB 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 LMP91200MT/NOPB operates from –40°C to +125°C.

LMP91200MT/NOPB

Feature

  • 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
Description

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.

LMP91200MT/NOPB Block Diagram
(Picture: Diagram)

Technical Parameters

  • Number of Converters
  • 1
  • Operating Supply Voltage
  • 1.8 V to 5.5 V
  • Operating Temperature Range
  • - 40 C to + 125 C
  • Package / Case
  • TSSOP-16
  • Packaging
  • Tube
  • Series
  • LMP91200
  • Factory Pack Quantity
  • 92

LMP91200MT/NOPB Documents

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Ratings and Reviews (1)

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  • **teve***
    2020-03-28

    OK.Muy rapido.Gracias Very Fast .Thanks

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Texas Instruments, Inc

TI
Texas Instruments Incorporated designs and manufactures analog technologies, digital signal processing (DSP) and microcontroller (MCU) semiconductors. TI is a leader in semiconductor solutions for analog and digital embedded and applications processing....
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