Overview
The INA220BIDGSR is a high-precision current shunt and power monitor IC manufactured by Texas Instruments. This device is designed to measure current, voltage, and power in a wide range of applications. It integrates a low-drift, precision amplifier with a 12-bit ADC, enabling accurate measurements with minimal external components. The INA220BIDGSR is ideal for systems requiring precise power monitoring, such as battery management, industrial automation, and consumer electronics. Its compact VSSOP-10 package and low power consumption make it a versatile choice for space-constrained designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 3.0 to 5.5 | V | Operating range |
| Current Sense Range | ±3.2 | A | Default range |
| Resolution | 12 | bits | ADC resolution |
| Accuracy | ±0.5 | % | Maximum error |
| Operating Temperature | -40 to 125 | °C | Industrial range |
| Package | VSSOP-10 | - | Compact form factor |
| Interface | I²C | - | Communication protocol |
| Power Consumption | 330 | µA | Typical value |
Key Features
- High Precision: Combines a low-drift amplifier and 12-bit ADC for accurate current, voltage, and power measurements.
- Wide Supply Range: Operates from 3.0V to 5.5V, making it suitable for various applications.
- Low Power Consumption: Consumes only 330 µA (typical), ideal for battery-powered systems.
- Compact Package: Available in a small VSSOP-10 package for space-constrained designs.
- I²C Interface: Simplifies communication with microcontrollers and other devices.
Applications
The INA220BIDGSR is widely used in applications requiring precise power monitoring. Key application areas include:
- Battery Management Systems: Monitors charge/discharge currents and battery health.
- Industrial Automation: Measures motor currents and power consumption in control systems.
- Consumer Electronics: Tracks power usage in devices like laptops and smartphones.
- Renewable Energy Systems: Monitors solar panel output and energy storage systems.
- Automotive Electronics: Measures current and voltage in vehicle power systems.
Q & A
1. What is the maximum current the INA220BIDGSR can measure?
The default current sense range is ±3.2A, but this can be adjusted using an external shunt resistor.
2. What is the supply voltage range for this device?
The INA220BIDGSR operates from 3.0V to 5.5V.
3. Does the INA220BIDGSR support digital communication?
Yes, it uses an I²C interface for communication.
4. What is the resolution of the ADC in the INA220BIDGSR?
The ADC has a 12-bit resolution.
5. Is the INA220BIDGSR suitable for high-temperature environments?
Yes, it operates in a temperature range of -40°C to 125°C.
6. What is the typical power consumption of this device?
The typical power consumption is 330 µA.
7. Can the INA220BIDGSR measure voltage as well as current?
Yes, it can measure both current and voltage, as well as calculate power.
8. What package does the INA220BIDGSR come in?
It is available in a VSSOP-10 package.
9. What is the accuracy of the INA220BIDGSR?
The maximum error is ±0.5%.
10. Is the INA220BIDGSR suitable for battery-powered devices?
Yes, its low power consumption makes it ideal for battery-powered applications.
