INA253A1IPWR

Overview

The INA253A1IPWR is a high-side current sense amplifier from Texas Instruments, housed in a TSSOP-20 package. It operates with a supply voltage between 2.7 V and 5.5 V and supports common-mode voltages from -4 V to 80 V. The device features a gain of 100 mA/V, a 3 dB bandwidth of 350 kHz, and a CMRR of 125 dB. Input bias current is 90 uA, with a power consumption of 3 mA. Gain error is specified at 0.05%, and input voltage noise density is 40 nV/sqrt Hz. Operating temperature ranges from -40 C to +125 C.

Feature Summary

• Supports bidirectional current sensing with high common-mode voltage tolerance up to 80 V.
• Provides precision measurement with low gain error and high common-mode rejection ratio.
• Features wide bandwidth for dynamic load monitoring applications.

Applications

• Industrial motor control systems
• Power supply output current monitoring
• Battery management systems

Procurement Notes

Verify the specific suffix IPWR corresponds to the TSSOP-20 package and standard operating temperature range when ordering. Confirm that the A1 grade meets the required gain accuracy specifications for the design. Ensure compatibility with the system's common-mode voltage levels before integration. Check datasheet for thermal performance requirements under maximum load conditions.

Selection Notes

Select this component for applications requiring high-side sensing with wide common-mode voltage range. The 100 mA/V gain suits moderate current levels where signal amplification is needed without external resistors. Consider the 350 kHz bandwidth for fast transient response needs. Compare against lower bandwidth or lower voltage variants if cost or speed constraints differ.

Part Context

This part belongs to the INA253 series of precision current sense amplifiers designed by Texas Instruments. It is engineered for robust performance in noisy industrial environments. The series offers various grades and packages to accommodate different accuracy and form factor requirements across power management designs.

FAQ

What is the maximum common-mode voltage supported?

The INA253A1IPWR supports a common-mode voltage range from -4 V to 80 V.

Is this device suitable for bidirectional current sensing?

Yes, the INA253A1IPWR is designed for bidirectional current sensing applications.