Industry's First Zero-Drift, Nanopower Amplifier Offers Ultra-Low Power and Ultra-High Accuracy

TI Precision Nanopower Op Amps Reduce System Power and Maximize Battery Life for Precision IoT, Industrial and Personal Electronics Applications

Texas Instruments (TI) introduced the first ultra-low supply current op amp with ultra-precision and industry-leading performance. The LPV821 zero-drift, nano-power op amp features outstanding power-accuracy performance that enables engineers to achieve extremely high dc accuracy with up to 60% less power than comparable zero-drift devices. The LPV821 is designed for high-precision applications such as wireless sensing nodes, home and factory automation equipment, and portable electronics.

The latest addition to TI's portfolio of low-power amplifiers, the LPV821 op amp offers lower battery capacity and longer system life to help engineers design lighter, smaller and more portable applications.

The main features and benefits of the LPV821 op amp

Superior Power - Precision Performance: The LPV821 consumes only nano-amperes of supply current while providing the precision benefits of optimized offset, drift, and 1 / f noise (flicker noise), especially for high-precision and low-power There are strict requirements for applications such as industrial gas detectors, field transmitters and battery packs.

60% lower power consumption: With the optimum 650 nA supply current, the LPV821 extends battery life and enables precision systems to have a lower power budget than comparable zero-drift devices.

High DC Accuracy: TI's zero-drift technology provides a low initial offset voltage of 10μV and an offset voltage drift of 0.02μV / ° C, eliminating temperature drift and flicker noise, enabling engineers to achieve excellent dc accuracy and dynamic error correction. In addition, self-calibration technology can also help engineers save system development costs and reduce time-to-market.

No cycle duty required: Nanopower keeps applications always on, such as continuous and blood glucose monitoring and other electrochemical battery applications. In addition, the low current voltage reduces the external circuitry required to turn the amplifier on and off.

High-Impedance Sensor Operation: High impedance sensor operation is supported with an input bias current of 7 pA and low flicker noise of 3.9μVp-p to provide more accurate measurements in precision systems.

Engineers can pair the LPV821 op amp with the TLV3691 nano-power comparator or the DS7142 nano-power ADC to set a threshold that automatically wakes up the microcontroller such as the CC1310 SimpleLink ™ Sub-1 GHz ultra-low-power wireless microcontroller to further reduce system power consumption.

Accelerate design tools and support

Designers can download the TINA-TI ™ SPICE model to simulate their design and predict the circuit behavior when using the LPV821 op amp. Engineers can also use the LPV821 op amp to quickly launch a gas sensing system design with a 10-year low-power carbon monoxide detector reference design for a coin-cell battery and a micropower electrochemical gas sensor amplifier reference design.

Packaging and delivery

Prenatal samples of the LPV821 op amp are now available from TI shops and authorized distributors in a 5-lead small outline transistor (SOT-23) package.

More TI LPV8 series products

Learn More About：  Texas Instruments

 Author：Brittany Antonia （The author of article owns the copyright.）