LMP91002 - Texas Instruments

LMP91002 programmable analog front-end

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. The LMP91002’s programmability enables it support not biased electro-chemical.

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
• Ambient Operating Temperature
  –40°C to 85°C
• Package 14-pin WSON
• Supported by Webench Sensor AFE Designer 2 Applications
• Gas Detectors
• Amperometric Applications
• Electrochemical.