INA234
- High-side or low-side current sensing
- Operates from a 1.7-V to 5.5-V power supply
- Reports current, voltage and power
- Programmable full scale range: 20mV / 80mV
- Input common mode range: –0.3 V to 28 V
- Current monitoring accuracy:
- 12-bit ADC resolution
- 0.5% gain error (maximum)
- 100-µV offset (maximum)
- Low input bias current: 10 nA (maximum)
- Configurable averaging options
- General call addressing allows conversion synchronization among devices
- Alert limits for over and under current events
- 1.2-V compliant I 2C, SMBus interface
- Two device address options with a 4-pin selectable address
- DSBGA-8 Package (0.745 mm × 1.508 mm)
- Operating temperature: –40°C and +125°C
The INA234 device is a 12-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 INA234 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 INA234 senses current on common-mode bus voltages that can vary from –0.3 V to 28 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.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | INA234 28-V, 12-Bit, Current, Voltage, and Power Monitor With an I2C Interface datasheet (Rev. C) | PDF | HTML | 2023年 3月 31日 |
EVM User's guide | INA232EVM, INA234EVM and INA236EVM User's Guide (Rev. B) | PDF | HTML | 2022年 12月 23日 | |
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 2022年 1月 25日 | |
Application note | Digital Interfaces for Current Sensing Devices (Rev. A) | PDF | HTML | 2021年 9月 30日 | |
Application brief | Integrating the Current Sensing Signal Path (Rev. B) | PDF | HTML | 2021年 9月 29日 | |
Application brief | Integrated, Current Sensing Analog-to-Digital Converter (Rev. A) | PDF | HTML | 2021年 9月 28日 | |
Application note | Getting Started with Digital Power Monitors (Rev. A) | PDF | HTML | 2021年 9月 2日 | |
Application note | Understanding the I2C Bus | PDF | HTML | 2015年 6月 30日 |
設計與開發
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支援產品和硬體
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封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
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DSBGA (YBJ) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點