Overview
The INA220BIDGST from Texas Instruments is a high-precision current shunt and power monitor designed for accurate measurement of current, voltage, and power in various applications. This device features an I2C- or SMBus-compatible interface, allowing for easy integration into digital systems. The INA220BIDGST is capable of high- or low-side sensing and can monitor bus voltages ranging from 0 V to 26 V. It is available in a VSSOP-10 package and operates with a single supply voltage from 3 to 5.5 V, drawing a maximum of 1 mA of supply current. The device is highly accurate, with a maximum error of 0.5% over temperature for the B grade version.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Full-scale current sense (input) voltage range | ±40 mV (PGA = /1) | mV |
| Bus voltage (input voltage) | 0 to 32 V (BRNG = 1), 0 to 16 V (BRNG = 0) | V |
| Offset Voltage, RTI | ±10 μV to ±100 μV (PGA = /1) | μV |
| Common-mode rejection | 100 to 120 dB | dB |
| Operating Temperature | -40°C to 125°C | °C |
| Supply Voltage | 3 to 5.5 V | V |
| Supply Current | Maximum 1 mA | mA |
| Package | VSSOP-10 | |
| Interface | I2C- or SMBus-compatible |
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
- High accuracy: 0.5% (maximum) over temperature for the B grade version
- User-programmable calibration
- Fast (2.56-MHz) I2C- or SMBus-compatible interface
- VSSOP-10 package
Applications
- Servers
- Telecom equipment
- Notebook computers
- Power management
- Battery chargers
- Automotive systems
- Power supplies
- Test equipment
Q & A
- What is the INA220BIDGST used for? The INA220BIDGST is used for monitoring current, voltage, and power in various electronic systems.
- What are the operating voltage ranges for the INA220BIDGST? The device operates with a supply voltage from 3 to 5.5 V and can sense bus voltages from 0 to 26 V.
- What is the accuracy of the INA220BIDGST? The B grade version of the INA220 has a maximum error of 0.5% over temperature.
- What interface does the INA220BIDGST use? The INA220BIDGST uses an I2C- or SMBus-compatible interface.
- What are the key applications of the INA220BIDGST? Key applications include servers, telecom equipment, notebook computers, power management, battery chargers, automotive systems, power supplies, and test equipment.
- How many programmable addresses does the INA220BIDGST have? The INA220BIDGST has 16 programmable addresses.
- What is the package type of the INA220BIDGST? The INA220BIDGST is available in a VSSOP-10 package.
- What is the operating temperature range of the INA220BIDGST? The operating temperature range is from -40°C to 125°C.
- Does the INA220BIDGST support both high- and low-side sensing? Yes, the INA220BIDGST supports both high- and low-side sensing.
- How is the calibration of the INA220BIDGST performed? The calibration of the INA220BIDGST is user-programmable using the Calibration Register.
