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LMP91002 - programmable analog front-end

General Description

The LMP91002 device is a programmable Analog Front End (AFE) for use in micro-power electrochemical-sensing applications.

It provides a complete signal path solution between a not biased gas sensor and a microcontroller generating an output voltage proportional to the cell current.

Key Features

  • 1 Typical Values, TA = 25°C.
  • Supply Voltage 2.7 V to 3.6 V.
  • Supply Current (Average Over Time) < 10 µA.
  • Cell Conditioning Current Up to 10 mA.
  • Reference Electrode Bias Current (85°C) 900-pA (Maximum).
  • Output Drive Current 750 µA.
  • Complete Potentiostat Circuit to Interface to Most Not Biased Gas Sensors.
  • Low Bias Voltage Drift.
  • Programmable TIA Gain 2.75 kΩ to 350 kΩ.
  • I2C-Compatible Digital Interface.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LMP91002 SNIS163B – APRIL 2012 – REVISED OCTOBER 2015 LMP91002 Sensor AFE System: Configurable AFE Potentiostat for Low-Power Chemical Sensing Applications 1 Features •1 Typical Values, TA = 25°C • Supply Voltage 2.7 V to 3.6 V • Supply Current (Average Over Time) < 10 µA • Cell Conditioning Current Up to 10 mA • Reference Electrode Bias Current (85°C) 900-pA (Maximum) • Output Drive Current 750 µA • Complete Potentiostat Circuit to Interface to Most Not Biased Gas Sensors • Low Bias Voltage Drift • Programmable TIA Gain 2.