INA223
- Wide Common-Mode Range: 0 V to 26 V
- ±100 µV Offset (Max, Gain = 300 V/V)
- Accuracy
- ±0.25% Shunt Voltage Gain Error (Max)
- ±0.15% Bus Voltage Gain Error (Max)
- 1.25% Power Error (Max)
- 0.3 µV/°C Offset Drift (Max)
- 50 ppm/°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: 250 µA (Max)
- Shutdown Current: 1 µA (Max)
The INA223 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 0 V to 26 V. The common-mode voltage range 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.
The 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.
A shutdown feature is available to disable the device and effectively disconnect it from the shunt resistor and supply voltage, thus reducing the drain on the battery.
The INA223 operates from a single +2.7-V to +5.5-V supply, drawing a maximum supply current of 250 µA. It is specified over the extended temperature range of –40°C to +105°C, and is offered in an SON-10 package.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | Analog Output Current Shunt and Voltage Instantaneous Power Monitor datasheet | 13 Jun 2012 | |
Application note | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | 18 Nov 2024 | |
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 25 Jan 2022 | |
Application brief | Energy and Power Monitoring with Digital Current Sensors | 25 May 2017 | ||
Application note | Understanding the I2C Bus | PDF | HTML | 30 Jun 2015 | |
EVM User's guide | INA223EVM User's Guide | 11 Jun 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
Supported products & hardware
Products
Precision op amps (Vos<1mV)
General-purpose op amps
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Transimpedance amplifiers
High-speed op amps (GBW ≥ 50 MHz)
Power op amps
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Fully differential amplifiers
Precision ADCs
Biosensing AFEs
High-speed ADCs (≥10 MSPS)
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Audio line receivers
Analog current-sense amplifiers
Digital power monitors
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors with integrated shunt resistor
Die & wafer services
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RF transmitters
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
Supported products & hardware
Products
Analog current-sense amplifiers
Digital power monitors
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Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
WSON (DSK) | 10 | Ultra Librarian |
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