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Industry’s first zero-drift, nanopower amplifier from Texas Instruments

TI delivers the most precise nanopower op amp, reducing system power and maximizing battery life in precision IoT, industrial and personal electronics applications

Texas

Texas Instruments (TI) unveils the first operational amplifier (op amp) to combine ultra-high precision with the industry’s lowest supply current.

The LPV821 op amp is the newest device in TI’s low-power amplifier portfolio, which enables engineers to design lighter, smaller and more portable applications with lower-capacity batteries and longer system lifetimes.

With exceptional power-to-precision performance, Ti’s LPV821 zero-drift, nanopowerop amp enables engineers to attain the highest DC precision, while consuming 60 percent less power than competitive zero-drift devices.

Key features and benefits of the LPV821 op amp

  • Exceptional power-to-precision performance: Consuming only nanoamps of supply current,while providing the high-precision benefits of optimized offset, drift and 1/f noise (flicker noise),the LPV821 is extremely beneficial for applications where both precision and low power are essential system needs, including industrial gas detectors, field transmitters and battery packs.
  • Sixty percent lower power consumption: With best-in-class supply current of 650 nA, the LPV821 extends battery lifetimes and enables lower power budgetsinprecision systems than competitive zero-drift devices.
  • High DC precision: TI’s zero-drift technology delivers a low initial offset of 10µV and an offset drift of 0.02 µV/°C, eliminating temperature drift and flicker noise, andenabling engineers to attain the highest DC precision and dynamic error correction.Additionally, self-calibrationtechnology helps engineers save system development cost and speed time to market.
  • No duty cycling:Nanopower consumption enables always-on applications such as continuous and blood glucose monitoring, and other electrochemical cell applications. Additionally, the low supply current decreases the external circuitry required to turn the amplifier on and off.
  • High-impedance sensor operation: An input bias current of 7 pA and low flicker noise at 3.9 µVp-penables operation with high-impedance sensors, delivering more accurate measurements in precision systems.

Engineers can pair the LPV821 op amp with the TLV3691 nanopower comparator or ADS7142 nanopoweranalog-to-digital converter (ADC) to program a threshold that will automatically wake upa microcontroller (MCU)such as the CC1310 SimpleLink™ Sub-1 GHz MCU, further reducing system power consumption.

Applications include

The LPV821 is designed for use in precision applications such as wireless sensing nodes, home and factory automation equipment, and portable electronics.

Package, availability and pricing

Pre-production samples of the LPV821 op amp are now available through the TI storeand authorized distributors in a 5-pin small-outline transistor (SOT-23)package. Pricing starts at US$0.80in 1,000-unit quantities.

Further info: Click here

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