Overview
The INA234AIYBJR, produced by Texas Instruments, is a 28-V, 12-bit digital current monitor with an I²C/SMBus-compatible interface. This device is designed for high-side or low-side current sensing and operates from a single 1.7-V to 5.5-V power supply. It reports values for current, bus voltage, and power, making it versatile for various applications. The INA234 features programmable ADC conversion times and averaging, along with a programmable calibration value that enables direct readouts of current in amperes and power in watts. It also includes alert limits for over and under current events, as well as overvoltage and undervoltage conditions, enhancing its monitoring capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 1.7 V to 5.5 V | V |
| Input Common Mode Range | –0.3 V to 28 V | V |
| ADC Resolution | 12 bits | |
| Gain Error (Maximum) | 0.5% | |
| Offset (Maximum) | 100 µV | V |
| Input Bias Current (Maximum) | 10 nA | A |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Type | DSBGA-8 (0.745 mm × 1.508 mm) | |
| Quiescent Current (Typical) | 300 µA | A |
| Standby Current (Typical) | 2.2 µA | A |
Key Features
- High-side or low-side current sensing
- Programmable full scale range: 20mV / 80mV
- Configurable averaging options
- General call addressing for conversion synchronization among devices
- Alert limits for over and under current events, as well as overvoltage and undervoltage conditions
- 1.2-V compliant I²C, SMBus interface
- Two device address options with a 4-pin selectable address
- High input impedance for use with larger current sense resistors
- Programmable ADC conversion times and calibration value for direct readouts of current and power
Applications
- Mobile phones
- Smart speakers
- Wearables
- Battery chargers
- Power management systems
- Battery cell monitors and balancers
- Rack servers
Q & A
- What is the operating voltage range of the INA234AIYBJR?
The INA234AIYBJR operates from a single 1.7-V to 5.5-V power supply.
- What is the ADC resolution of the INA234AIYBJR?
The INA234AIYBJR has a 12-bit ADC resolution.
- What is the input common mode range of the INA234AIYBJR?
The input common mode range is from –0.3 V to 28 V.
- Does the INA234AIYBJR support alert functions?
- What is the typical quiescent current of the INA234AIYBJR?
The typical quiescent current is 300 µA.
- What is the package type of the INA234AIYBJR?
The package type is DSBGA-8 with dimensions of 0.745 mm × 1.508 mm.
- Can the INA234AIYBJR be used for both high-side and low-side current sensing?
- What interface does the INA234AIYBJR use for communication?
The INA234AIYBJR uses a 1.2-V compliant I²C, SMBus interface.
- What are the typical standby current and operating temperature range of the INA234AIYBJR?
The typical standby current is 2.2 µA, and the operating temperature range is from –40°C to +125°C.
- Does the INA234AIYBJR support programmable ADC conversion times and averaging?
