Overview
The INA220AIDGST, produced by Texas Instruments, is a high- or low-side, bidirectional current and power monitor with an I2C- or SMBus-compatible interface. This device is designed to provide accurate digital current, voltage, and power readings, making it essential for precisely-controlled systems. It can operate in both high-side and low-side sensing configurations and supports bus voltages ranging from 0 to 26 V. The INA220AIDGST is powered by a single 3 to 5.5 V supply and draws a maximum of 1 mA of supply current. It operates over a temperature range of –40°C to 125°C, making it suitable for a wide range of applications.
Key Specifications
| Parameter | INA220A | INA220B | Unit |
|---|---|---|---|
| Full-scale current sense (input) voltage range | ±40 | ±40 | mV |
| Bus voltage (input voltage) | 0 to 32 | 0 to 32 | V |
| Offset Voltage, RTI | ±100 | ±50 | μV |
| Common-mode rejection | 100 to 120 | 100 to 120 | dB |
| Supply Voltage | 3 to 5.5 | 3 to 5.5 | V |
| Supply Current | 1 | 1 | mA |
| Operating Temperature | –40 to 125 | –40 to 125 | °C |
| Package | VSSOP-10 | VSSOP-10 | |
| Body Size | 3.00 mm × 3.00 mm | 3.00 mm × 3.00 mm |
Key Features
- High- or low-side sensing capability
- Senses bus voltages from 0 V to 26 V
- Reports current, voltage, and power
- 16 programmable addresses for I2C or SMBus interface
- High accuracy: 0.5% (maximum) over temperature for INA220B
- User-programmable calibration
- Fast (2.56-MHz) I2C- or SMBus-compatible interface
- VSSOP-10 package
- Programmable registers for flexible configuration of measurement resolution and operation mode
- PGA function to increase full-scale shunt voltage range
- Compatibility with TI hot swap controllers like TPS2490
Applications
- Servers
- Telecom equipment
- Notebook computers
- Power management systems
- Battery chargers
- Automotive systems
- Power supplies
- Test equipment
Q & A
- What is the operating voltage range of the INA220AIDGST?
The INA220AIDGST operates from a supply voltage of 3 to 5.5 V.
- What is the temperature range for the INA220AIDGST?
The device operates over a temperature range of –40°C to 125°C.
- Can the INA220AIDGST sense both high-side and low-side currents?
- What is the full-scale current sense voltage range of the INA220AIDGST?
The full-scale current sense voltage range is ±40 mV.
- How many programmable addresses does the INA220AIDGST have for its I2C or SMBus interface?
The INA220AIDGST has 16 programmable addresses.
- What is the accuracy of the INA220B version over temperature?
The INA220B version has an accuracy of 0.5% (maximum) over temperature.
- Can the INA220AIDGST be used with TI hot swap controllers?
- What is the package type of the INA220AIDGST?
The INA220AIDGST is available in a VSSOP-10 package.
- How does the PGA function work in the INA220AIDGST?
The PGA function increases the full-scale shunt voltage range up to 2, 4, or 8 times (up to 320 mV).
- What are the common applications of the INA220AIDGST?
The INA220AIDGST is commonly used in servers, telecom equipment, notebook computers, power management systems, battery chargers, automotive systems, power supplies, and test equipment.
