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Texas Instruments INA700 I2C Output Digital Power Monitor

Texas Instruments INA700 I2C Output Digital Power Monitor has an integrated shunt resistor and a 16-bit delta-sigma ADC designed for current sensing applications. The device can measure full-scale currents up to ±15.728A over the common-mode voltage range of –0.3V to +40V. The INA700 reports current, bus voltage, die temperature, power, energy, and charge accumulation with a precision ±0.5% integrated oscillator, all while performing the needed calculations in the background. The integrated temperature sensor is ±3°C accurate over the junction temperature range.

The low offset and gain error drift of the INA700 allow use in systems that do not undergo temperature calibration during manufacturing. The device features selectable ADC conversion times from 50µs to 4.12ms and sample averaging from 1x to 1024x, which further helps reduce the noise of the measured data and allows for optimization of overcurrent detection windows. The Texas Instruments INA700 is available in a tiny PowerWCSP (DSBGA) package to minimize the solution size and maximize thermal performance.

Features

  • Low-loss integrated shunt resistor
    • 2mΩ at TA = 25°C internal resistance 
    • ±15A at TA = 25°C current rating 
  • High-resolution, 16-bit delta-sigma ADC
    • –0.3V to +40V wide common-mode range 
    • Reports current, bus voltage, power, internal temperature, energy, and charge
    • Programmable conversion time and averaging
  • Current monitoring accuracy
    • ±0.5% at 5A total measurement error 
    • ±1.5mA (maximum) offset current 
    • ±0.5% (maximum at 5A) gain error 
    • ±50ppm/°C (maximum) gain error drift
  • Power monitoring accuracy
    • 0.85% accuracy at 5A
  • Energy and charge accuracy
    • 1.35% accuracy at 5A
  • Internal monitoring and fault detection
  • ±0.5% (maximum) precision oscillator
  • 2.94MHz high-speed I2C interface with four pin-selectable addresses
  • Operates from a 2.7V to 5.5V supply
    • 640µA (typical) operational current
    • 5µA (maximum) shutdown current

Applications

  • Notebook computers
  • Smartphones
  • Industrial battery packs
  • Smart network interface cards (NIC)
  • Hardware accelerator cards

Functional Block Diagram

Block Diagram - Texas Instruments INA700 I2C Output Digital Power Monitor

Related Development Tool

Texas Instruments INA700EVM & INA701EVM Evaluation Modules

A compact platform for evaluating the main features and performance of the INA700/INA701.

Learn MoreGiới thiệu về Texas Instruments INA700EVM & INA701EVM Evaluation Modules View Productsliên quan đến Texas Instruments INA700EVM & INA701EVM Evaluation Modules
Đã phát hành: 2023-12-19 | Đã cập nhật: 2024-05-23