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Home » NEWEST Products » New by Manufacturer » Texas Instruments » INA223 Voltage-Output Power Monitor - TI
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Texas Instruments INA223 Voltage-Output Power Monitor
Texas Instruments INA223 Voltage-Output Power Monitor

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TI INA223 Voltage-Output Power Monitor

Texas Instruments INA223 Voltage-Output Power Monitor is a voltage-output device that monitors the current, bus voltage, and power of a supply line by sensing a voltage drop across a shunt at common-mode voltages from 0V to 26V. The common-mode voltage range of TI INA223 Power Monitor is independent of the supply voltage. The low offset of the Zerø-Drift architecture enables current sensing with maximum drops across the shunt as low as 10 mV, full-scale. INA223 includes a two-wire interface used for adjusting the configuration settings of the device. The interface is used to control the signal (current shunt voltage, bus voltage, or power) that is directed to the device output. Multiple gain and attenuation settings can be programmed through the two-wire interface to allow for application-specific configurations. The programmable gain feature also allows the device to be operated over a much wider dynamic current load range without having to switch the sensing element used. INA223 is ideal for use in notebook computers, cell phones, power management, and more. INA223EVM is a platform for evaluating the performance of the INA223 under various signal, shunt, and supply conditions.

INA223 Features
  • Wide Common-Mode Range: 0V to 26V
  • ±100µV Offset (Max, Gain=300V/V)
  • Accuracy
    • ±0.25% Shunt Voltage Gain Error (Max)
    • ±0.15% Bus Voltage Gain Error (Max)
    • 1.25% Power Error (Max)
    • 0.3µV/°C Offset Drift (Max)
    • 50ppm/°C Gain Drift (Max)
  • Programmable Gains
    • Current Shunt Voltage Gains: 20, 128, 300
    • Bus Voltage Attenuations: 1/10, 1/5, 2/5
  • Monitors/Measures/Reports:
    • Instantaneous Power
    • Bus Voltage
    • Load Current
  • Quiescent Current: 250µA (Max)
  • Shutdown Current: 1µA (Max)
EVM Kit Contents
  • INA223 PCB evaluation board
  • SM-USB-DIG Platform PCB
  • USB extender cable
  • SM-USB-DIG connector ribbon cable
  • User's guide CD-ROM

INA223 Applications
  • Notebook Computers
  • Cell Phones
  • Telecom Equipment
  • Power Management

Functional Block Diagram

Functional Block Diagram
  • Texas Instruments