LMP91002

ACTIVO

AFE configurable para aplicaciones de baja potencia H2S y detección de CO

Detalles del producto

Number of input channels 1 Features Transimpedance Amplifier Operating temperature range (°C) -40 to 85 Vs (min) (V) 2.7 Vs (max) (V) 3.6 Interface type Serial I2C Rating Catalog
Number of input channels 1 Features Transimpedance Amplifier Operating temperature range (°C) -40 to 85 Vs (min) (V) 2.7 Vs (max) (V) 3.6 Interface type Serial I2C Rating Catalog
WSON (NHL) 14 16 mm² 4 x 4
  • 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
  • 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

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 gas sensor with a single design. The LMP91002 supports gas sensitivities over a range of 0.5 nA/ppm to 9500 nA/ppm. It also allows for an easy conversion of current ranges from 5 µA to 750 µA full scale. The LMP91002’s transimpedance amplifier (TIA) gain is programmable through the I2C interface. The I2C interface can also be used for sensor diagnostics. The LMP91002 is optimized for micro-power applications and operates over a voltage range of 2.7 V to 3.6 V. The total current consumption can be less than 10 µA. Further power savings are possible by switching off the TIA amplifier and shorting the reference electrode to the working electrode with an internal switch.

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 gas sensor with a single design. The LMP91002 supports gas sensitivities over a range of 0.5 nA/ppm to 9500 nA/ppm. It also allows for an easy conversion of current ranges from 5 µA to 750 µA full scale. The LMP91002’s transimpedance amplifier (TIA) gain is programmable through the I2C interface. The I2C interface can also be used for sensor diagnostics. The LMP91002 is optimized for micro-power applications and operates over a voltage range of 2.7 V to 3.6 V. The total current consumption can be less than 10 µA. Further power savings are possible by switching off the TIA amplifier and shorting the reference electrode to the working electrode with an internal switch.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LMP91002 Sensor AFE System: Configurable AFE Potentiostat for Low-Power Chemical Sensing Applications datasheet (Rev. B) PDF | HTML 29 oct 2015
User guide SPIO-4 Precision Signal-Path Controller Board User Guide (Rev. A) 05 may 2018
Application note AN-2230 MSP430 Interface to LMP91000 Code Library (Rev. C) 01 may 2013
More literature Sensor Analog Front Ends Brochure 30 oct 2012
EVM User's guide LMP91000EVM User's Guide (Rev. A) 22 jun 2012

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LMP91000EVM — Módulo de evaluación LMP91000

The Texas Instruments LMP91000EVM evaluation module (EVM) helps designers evaluate the operation and performance of the LMP91000 Sensor Analog Front End for Electrochemical sensor. The LMP91000EVM is part of the Sensor AFE evaluation platform.

The SPIO4 communication board is a data capture board, (...)

Guía del usuario: PDF
Controlador o biblioteca

SNAC032 MSP430 Interface to LMP91000 and LMP91002 Code Library

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Acondicionadores de señal
LMP91000 Potenciostato de AFE configurable para monitorización de células electroquímicas de baja potencia LMP91002 AFE configurable para aplicaciones de baja potencia H2S y detección de CO
Soporte de software

LMP9XXXXSENSORDEV-SW LMP91000 Sensor AFE Software Download

National's configurable Sensor AFE ICs and WEBENCH® Sensor AFE Designer are part of an integrated hardware and software development platform to simplify sensor system design by enabling the engineer to select a sensor, design and configure the solution, and download configuration in minutes. (...)
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Acondicionadores de señal
LMP91000 Potenciostato de AFE configurable para monitorización de células electroquímicas de baja potencia LMP91002 AFE configurable para aplicaciones de baja potencia H2S y detección de CO
ADC de precisión
LMP90077 ADC delta-sigma de 16 bits, 214.6 SPS y 4 canales para sensores LMP90078 ADC delta-sigma de 16 bits, 214.6 SPS y 4 canales para sensores con IDAC x2 LMP90079 ADC delta-sigma de 16 bits, 214.6 SPS y 7 canales para sensores LMP90080 ADC delta-sigma de 16 bits, 214.6 SPS y 7 canales para sensores con IDAC x2 LMP90097 ADC delta-sigma de 24 bits, 214.6 SPS y 4 canales para sensores LMP90098 ADC delta-sigma de 24 bits, 214.6 SPS y 4 canales para sensores con IDAC x2 LMP90099 ADC delta-sigma de 24 bits, 214.6 SPS y 7 canales para sensores LMP90100 ADC delta-sigma de 24 bits, 214.6 SPS y 7 canales para sensores con IDAC x2
Modelo de simulación

LMP91002 PSpice Model

SNIM001.ZIP (33 KB) - PSpice Model
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WSON (NHL) 14 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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