Part Number: INA219BIDCNT

Manufacturer: Texas Instruments

Description: IC Current Monitor 0.5% SOT23-8

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of INA219BIDCNT

Datasheet  INA219BIDCNT datasheet
Category Integrated Circuits (ICs)
Family PMIC – Current Regulation/Management
Manufacturer Texas Instruments
Series Zero-Drift
Packaging Tape & Reel (TR)
Part Status Active
Function Current Monitor
Sensing Method High-Side
Accuracy ±0.5%
Voltage – Input 0 V ~ 26 V
Current – Output 10mA
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package / Case SOT-23-8
Supplier Device Package SOT-23-8

INA219BIDCNT Introduction

The INA219BIDCNT is a digital current sense amplifier that has been designed to meet the demands of precise and controlled systems. It is highly versatile and can be used in various applications. With its I2C- and SMBus-compatible interfaces, this device can be easily integrated into a variety of applications. One of its remarkable features is its capability to offer precise measurements of current, voltage, and power. This feature provides engineers and system designers with the essential information they need to make informed decisions and ensure optimal performance in their applications. The INA219BIDCNT is a highly useful tool for achieving precision and control in various electronic systems, thanks to its advanced features and reliable performance.

Understanding the INA219BIDCNT

● Digital Current Sense Amplifier

A key element for precisely measuring current in a system is the digital current sensing amplifier. It enables accurate current flow monitoring and control, facilitating efficient power consumption management and performance improvement. By delivering digital readings for current, voltage, and power, the INA219BIDCNT, a digital current sensing amplifier, surpasses the capabilities of conventional analog amplifiers. This digital output avoids the requirement for extra analog-to-digital conversion, streamlining and improving the measuring process.

The INA219BIDCNT enables informed decision-making in a variety of applications by providing digital readings. In order to assess system performance, spot abnormalities, and make necessary adjustments, engineers can extract real-time information about current levels, voltage dips, and power usage. Digital data is also more readily available, which improves connections with microcontrollers and other digital devices, speeds up system integration, and makes it possible for components to work together without any interruptions.

Overall, the digital current sensing amplifier capabilities of the INA219BIDCNT enable accurate current measurements and significant system behavior insights. This gives engineers the ability to optimize performance, control, and efficiency in their designs, making it a crucial tool for precise current monitoring and reasoned decision-making.

● Programmable Registers

The INA219BIDCNT provides a high level of flexibility thanks to its programmable registers, which are essential for adjusting its functioning to the needs of certain applications. Engineers can customize and optimize measurement resolution and operating modes by configuring various settings in these registers.

Measurement Resolution: The measurement resolution is a crucial feature that may be modified using the programmable registers. Engineers can balance speed and accuracy according to the demands of their application by altering the resolution. Finer measurement granularity is provided by higher resolution, although it may increase conversion time. On the other side, lower resolution provides faster readings but with less granularity. The measurement resolution can be changed programmatically, allowing for fine-tuning to obtain the ideal balance and maximize performance.

Triggered and Continuous Operation Modes: The programmable registers additionally provide the option to switch between triggered and continuous operation modes. The INA219BIDCNT continually takes measurements while operating in continuous mode, updating the registers with the most recent information. This mode is appropriate for real-time monitoring applications that need a constant stream of data. On the other hand, triggered mode permits measurements to be started by an outside trigger signal. This mode is perfect for cases where intermittent monitoring is sufficient because it only performs measurements when they are required.

The INA219BIDCNT gives engineers the freedom to customize measurement resolution and choose between continuous and triggered operating modes, enabling them to optimize performance for their particular application needs. This degree of customization makes the device a flexible solution for a variety of applications by ensuring that it functions with the necessary level of accuracy, efficiency, and power management.

Optimizing Performance

Consider the following tactics to enhance the INA219BIDCNT’s performance:

  • Recognize the demands of the application: Establish the desired degree of precision, the measurement speed, and the power limitations.
  • measurement accuracy: Select a resolution that balances conversion time and accuracy.
  • Power-related factors: Depending on the need for power efficiency, choose between the continuous and triggered operating modes.
  • Certify and calibrate: To achieve precise measurements, follow calibration protocols and frequently check and recalibrate the instrument.
  • Noise reduction: Use filtering, shielding, and grounding strategies to reduce noise interference.

Engineers can maximize the performance of the INA219BIDCNT for precise and dependable current, voltage, and power measurements in their particular applications by putting these techniques into practice.

Integration and Setup

The INA219BIDCNT integration and setup instructions are as follows:

  • Connections: Connect the V+, V-, SDA, and SCL pins to the corresponding power supply and communication components.
  • Power supply: Make sure the power supply has a steady voltage range of 3.0 volts to 5.5 volts and has enough current capacity.
  • Depending on the needs of the system, choose between I2C and SMBus and set the communication parameters accordingly.
  • Setting up and configuring: Set the measurement resolution, operating modes, and other parameters for the INA219BIDCNT to initialize and setup it.
  • Testing and Verification: Check the device’s functionality by confirming communication, confirming measurement accuracy, and resolving any problems that may have arisen.

You can effectively integrate and configure the INA219BIDCNT for precise and dependable current sensing in your system by adhering to these instructions.

Applications and Use Cases

A wide range of applications where precise current, voltage, and power measurements are necessary for effective control systems find use for the INA219BIDCNT. The following are some situations where the device excels:

  • Renewable Energy Systems: The INA219BIDCNT offers precise monitoring of current flow, voltage levels, and power generation in solar power and wind energy systems. This data is essential for maximizing energy efficiency, monitoring system performance, and making sure renewable resources are used effectively.
  • Battery management: A crucial component of battery management systems is the INA219BIDCNT. For accurate state-of-charge calculations, battery health monitoring, and charging algorithm modification, it delivers exact current measurements while charging and discharging. This is necessary to increase overall system reliability and battery life.
  • Motor Control: The INA219BIDCNT offers precise current sensing in motor drive circuits for applications involving motor control, such as robotics and industrial automation. This data is useful for tracking motor performance, identifying errors or anomalies, and putting closed-loop control techniques into practice for increased effectiveness and security.
  • Power Distribution Systems: The INA219BIDCNT enables accurate monitoring of current consumption, voltage levels, and power utilization in power distribution systems. This information helps with load balancing, spotting power abnormalities, and enhancing how energy is distributed across the system.

The INA219BIDCNT can be used in energy monitoring and management systems to track the amount of power used by various appliances and devices. This knowledge aids in locating energy-intensive components, enhancing energy usage patterns, and putting energy-saving techniques into practice.


A versatile digital current sense amplifier called the INA219BIDCNT gives exact current, voltage, and power data for making well-informed decisions. The INA219BIDCNT improves control and measurement capabilities in numerous systems thanks to its I2C and SMBus-compliant interface, programmable registers, and wide range of applications.

Engineers can acquire precise measurements catered to their own requirements by including the INA219BIDCNT. The gadget ensures accurate monitoring and optimized performance, whether it is used in renewable energy systems, battery management, motor control, or power distribution.

Get in touch with us at ICRFQ to learn more about the INA219BIDCNT’s potential and to enable improved control and monitoring in your systems. Take advantage of its dependability, precision, and adaptability to make wise decisions and increase system effectiveness.

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