LMP91000SDE

Analog IC for specialized circuits, PDSO14 packaging, LLP-14 layout, versatile for various applications
4,601 Effective Inventory

LMP91000SDE

Effective Inventory4,601

Analog IC for specialized circuits, PDSO14 packaging, LLP-14 layout, versatile for various applications

  • Manufacturer Part # : LMP91000SDE

  • Package/Case: WSONEP-14

  • Part Status : ACTIVE

  • Brand: Texas Instruments

  • Product Categories : Specialized ICs

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Shipping & Payment

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Service & Packaging

Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

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About packaging

Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.

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LMP91000SDE DataSheet
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Please submit RFQ for LMP91000SDE or email to us: Email: [email protected], we will contact you in 12 hours.

Details

for the LMP91000The LMP91000 is a programmable analog front-end (AFE) for use in micro-power electrochemical sensing applications. It provides a complete signal path solution between a sensor and a microcontroller that generates an output voltage proportional to the cell current. The LMP91000’s programmability enables it to support multiple electrochemical sensors such as 3-lead toxic gas sensors and 2-lead galvanic cell sensors with a single design as opposed to the multiple discrete solutions. The LMP91000 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 LMP91000’s adjustable cell bias and transimpedance amplifier (TIA) gain are programmable through the I2C interface. The I2C interface can also be used for sensor diagnostics. An integrated temperature sensor can be read by the user through the VOUT pin and used to provide additional signal correction in the µC or monitored to verify temperature conditions at the sensor.The LMP91000 is optimized for micro-power applications and operates over a voltage range of 2.7 to 5.25 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.

Key Features

  • Typical Values, TA = 25°C
  • Supply Voltage 2.7 V to 5.25 V
  • Supply Current (Average Over Time) <10 µA
  • Cell Conditioning Current Up to 10 mA
  • Reference Electrode Bias Current (85°C) 900pA (max)
  • Output Drive Current 750 µA
  • Complete Potentiostat Circuit-to-Interface to Most Chemical Cells
  • Programmable Cell Bias Voltage
  • Low-Bias Voltage Drift
  • Programmable TIA gain 2.75 kΩ to 350 kΩ
  • Sink and Source Capability
  • I2C Compatible Digital Interface
  • Ambient Operating Temperature –40°C to 85°C
  • Package 14-Pin WSON
  • Supported by WEBENCH® Sensor AFE Designer

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category ! Analog Front End - AFE Type Potentiostat AFE
Brand Texas Instruments Product Type ! Analog Front End - AFE
Subcategory Data Converter ICs

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LMP91000SDE PDF Download

FAQs

What is LMP91000SDE?

The LMP91000SDE is a precision analog front-end (AFE) designed by Texas Instruments. It is specifically tailored for use in electrochemical sensing applications, enabling accurate and sensitive measurements of chemical reactions and gas detection.

How Does LMP91000SDE Work?

The LMP91000SDE operates as an analog front-end, providing signal conditioning and amplification for electrochemical sensors. It offers programmable gain and filtering options to optimize sensor response and measurement accuracy. The AFE interfaces with microcontrollers or data acquisition systems to digitize sensor outputs for further processing.

How Many Pins does LMP91000SDE have and What are the Functions of the Pinout Configuration?

The LMP91000SDE is housed in a 8-lead VSSOP (Very Small Outline Package) package. The pinout configuration includes:

  • VDD: Power supply pin for the device.
  • VREF: Reference voltage input for the analog front-end.
  • VOUT: Analog output voltage pin for interfacing with external systems.
  • VIN+ and VIN-: Input pins for sensor connections.
  • RGND: Analog ground pin.
  • N/C: No-connect pin.

What are the Pros and Cons of LMP91000SDE?

Pros:

  • Specialized for Electrochemical Sensing: Tailored for accurate and sensitive measurement of chemical reactions and gases.
  • Programmable Gain and Filtering: Allows for optimization of sensor signals based on application requirements.
  • Compact Package: The 8-lead VSSOP package is space-efficient for compact designs.
  • Low Power Consumption: Operates with low power, suitable for battery-operated devices.
  • High Precision: Provides precision signal conditioning for reliable measurements.

Cons:

  • Application Specific: Designed for electrochemical sensing applications, may not be versatile for other types of sensor interfaces.
  • External Microcontroller Required: Needs a microcontroller or data acquisition system for full functionality.

Are There Any Equivalents/Alternatives to LMP91000SDE for Recommendation?

  • An equivalent part to the LMP91000SDE is the MAX31865 from Maxim Integrated.
  • Alternative AFEs for electrochemical sensing include the ADuCM355 from Analog Devices and the ADS1262 from Texas Instruments.

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