The INA236 device is a 16-bit digital current monitor with an I 2C/SMBus-compatible interface that is compliant with a wide range of digital bus voltages such as 1.2 V, 1.8 V, 3.3 V, and 5.0 V. The device monitors the voltage across an external sense resistor and reports values for current, bus voltage, and power.
The INA236 features programmable ADC conversion times and averaging. The device also has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes and power in watts. The device monitors the bus voltage present on the IN– pin and can alert on overcurent and undercurrent conditions as well as overvoltage and undervoltage conditions. High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.
The INA236 senses current on common-mode bus voltages that can vary from –0.3 V to 48 V, independent of the supply voltage. The device operates from a single 1.7-V to 5.5-V supply, drawing a typical supply current of 300 µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.2 µA.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | INA236 48-V, 16-Bit, Ultra-Precise, Current, Voltage, and Power Monitor With an I2C Interface datasheet (Rev. D) | PDF | HTML | Aug 14, 2023 |
| Application note | Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) | PDF | HTML | Apr 27, 2026 | |
| Application note | Closed Loop Constant Power Drive to Simplify Heater Element Control and Extend Battery Life | PDF | HTML | Jan 29, 2025 | |
| Application note | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | Nov 18, 2024 | |
| Application note | Digital Interfaces for Current Sensing Devices (Rev. A) | PDF | HTML | Sep 30, 2021 | |
| Application note | Getting Started with Digital Power Monitors (Rev. A) | PDF | HTML | Sep 2, 2021 | |
| Certificate | INA236EVM EU RoHS Declaration of Conformity (DoC) | Jun 1, 2021 |
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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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YBJ) | 8 | Ultra Librarian |
| SOT-23-THN (DDF) | 8 | Ultra Librarian |
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