Texas Instruments

INA181A4QDBVRQ1  

OP Amps, Buffer Amps ICs

The INA181A4QDBVRQ1 is a high-precision, low-power, monolithic current shunt amplifier designed for use in a wide range of applications, including battery monitoring, power management, and motor control. Manufactured by Texas Instruments, this device offers several features that make it a popular choice for engineers and designers working on projects that require accurate current sensing.

Description:

The INA181A4QDBVRQ1 is a precision current shunt amplifier that converts a small current passing through a shunt resistor into a proportional voltage output. It is available in a compact 4mm x 4mm QFN package, making it suitable for space-constrained applications.

Features:

1. High precision: The INA181A4QDBVRQ1 offers an accuracy of ±0.5% of the reading, ensuring reliable and accurate current measurements.
2. Low power consumption: The device operates with a low supply current of 90µA, making it ideal for battery-powered applications.
3. Wide input voltage range: The INA181A4QDBVRQ1 can operate with input voltages from 2.7V to 5.5V, providing flexibility in system design.
4. Programmable gain: The gain of the amplifier can be adjusted through an external resistor, allowing for customization of the output voltage range based on the shunt resistor value.
5. Wide temperature range: The device is specified to operate over a temperature range of -40°C to +125°C, making it suitable for harsh environments.
6. Short-circuit protection: The INA181A4QDBVRQ1 features built-in protection against short-circuit conditions, ensuring reliable operation in various applications.
7. Small form factor: The compact 4mm x 4mm QFN package allows for easy integration into space-constrained designs.

Applications:

1. Battery monitoring: The INA181A4QDBVRQ1 can be used to monitor the current flowing in and out of a battery, providing valuable information for battery management systems.
2. Power management: The device can be used in power supply designs to monitor the current drawn by various loads, helping to ensure efficient power distribution and management.
3. Motor control: In motor control applications, the INA181A4QDBVRQ1 can be used to measure the current flowing through the motor windings, providing feedback for closed-loop control systems.
4. Energy harvesting: The device can be used to measure the current generated by energy harvesting systems, such as solar panels or thermoelectric generators.
5. Electric vehicle (EV) charging: The INA181A4QDBVRQ1 can be used in EV charging systems to monitor the charging current, ensuring safe and efficient charging.
6. Load cell amplifiers: The device can be used in load cell amplifiers to measure the current generated by a load cell, providing accurate weight measurements in industrial applications.

In summary, the INA181A4QDBVRQ1 is a versatile and high-precision current shunt amplifier that offers a range of features, including low power consumption, programmable gain, and short-circuit protection. Its compact form factor and wide temperature range make it suitable for a variety of applications, from battery monitoring to motor control.

INA181A4QDBVRQ1 Documents

Download datasheets and manufacturer documentation for INA181A4QDBVRQ1

PCN :

Product Change Notification 2024-02-05 (PDF)       Product Change Notification (PDF)      

Models :

INA181A4QDBVRQ1 Symbol & Footprint by SnapMagic      

Product Catalogs :

Current Sense Amplifiers (Rev. D)      

Application Notes :

12-V Battery Monitoring in an Automotive Module       Evaluating Current Sensing Amplifiers in Body Control Modules Using Simulation       Low Cost Bidirectional Current Sensing Using INA181       INAx180-Q1 INAx181-Q1 Functional Safety Fit Rate FMD and Pin FMA (Rev. A)       Low-drift low-side bidirectional current sensing circuit with integrated preci       Bidirectional Low-Side Phase Current Sensing With Onboard Overcurrent Detection (Rev. D)       Low-Drift Low-Side Bidirectional Current Sensing Circuit (Rev. A)       Adjustable-gain current-output high-side current-sensing circuit       Low-Drift Low-Side Current Measurements for Three-Phase Systems (Rev. B)      

Technical Resources :

INA181 TINA-TI Reference Design (Rev. B)      

SPICE Models :

INA181A4 PSpice Model       INA181A2 PSpice Model       INA181A1 PSpice Model       INA181 TINA-TI Spice Model (Rev. A)       INA181 PSpice Model (Rev. B)       INA181A3 PSpice Model