Power

Nanopower op amps maximise battery and sensor life

21st December 2016
Daisy Stapley-Bunten
0

 

Texas Instruments (TI) has introduced the industry’s first precision nanopower operational amplifiers (op amps). The LPV811 and LPV812 consume quiescent current as low as 320nA and are part of a family of four low power op amps.

With up to 60% lower power consumption than competitive precision op amps and offset voltage as low as 300µV, the family of op amps extends battery and sensor life for applications such as building automation, wired and wireless sensor nodes, and wearables. 

image 1

Key features and benefits of the LPV811 family:

  • Low power consumption: Featuring industry-leading quiescent current without the use of duty cycling, these nanopower op amps enable more energy-efficient 4- to 20mA loop systems, extend battery life and reduce battery replacement costs.
  • High precision: With a precision offset voltage as low as 300µV and nanopower current consumption, the LPV811 and LPV812 help detect low concentrations of environmental gases and increase two-lead electrochemical sensor life and sensitivity.
  • Low-voltage operation: Operating with a single-supply voltage as low as 1.6V, the general-purpose LPV801 and LPV802 and precision LPV811 and LPV812 maintain continuous performance under low-voltage battery conditions.
  • High electromagnetic interference (EMI) immunity: An input rejection ratio greater than 80dB in the 500MHz to 1GHz frequency range reduces the need for external filtering components, saves design time for EMI-sensitive applications and enables rapid system qualification according to international standards organizations.

In addition, the LPV811 family of amplifiers can drive the ADS7042 successive approximation register (SAR) analogue-to-digital converter, helping to deliver an ultra-low-power analogue front end.

Tools and support to jump-start design
The Low Power Carbon Monoxide Sensor with 10+ Year Coin Cell Battery Life reference design demonstrates how the LPV811 nanopower op amp and the CC2650 SimpleLink multi-standard wireless microcontroller (MCU) reduce power consumption and extend the battery life of carbon monoxide gas detectors to as long as 10 years and extend their sensing range up to 1,000 parts per million. Designers also have access to a full suite of online support resources, including a complete library of TI Designs and SPICE models.

Product Spotlight

Upcoming Events

View all events
Newsletter
Latest global electronics news
© Copyright 2024 Electronic Specifier