TPA2295CT-VS1R-S

Overview

The TPA2295CT-VS1R-S is a high-voltage, zero-drift current sense amplifier manufactured by 3PEAK. It features an internal comparator with latch control and operates on a single supply voltage ranging from 3.0V to 18V. The device provides a fixed voltage gain of 20V/V and supports common-mode input voltages from -0.1V to +70V. Key electrical specifications include a maximum input offset voltage of ±500μV across the temperature range, a bandwidth of 500kHz, and a quiescent current of up to 1000μA. It is housed in an MSOP-8 package.

Feature Summary

• Zero-drift architecture ensures low offset drift for accurate DC measurements
• Integrated open-drain comparator with internal reference and latching capability
• Wide common-mode voltage range supporting high-side sensing applications
• High common-mode rejection ratio maintains accuracy under varying conditions

Applications

• High-side and low-side current sensing
• Battery chargers and power management systems
• Automotive and industrial control circuits
• Base stations and telecom equipment

Procurement Notes

Verify that the specific suffix VS1R-S corresponds to the tape and reel packaging format containing 3,000 units per reel as documented in the manufacturer's order information. Confirm the part number matches the 20V/V gain variant designated by the CT suffix. Ensure compatibility with standard MSOP-8 footprint requirements during procurement planning.

Selection Notes

Select this component when high-side current monitoring requires precise DC accuracy without external calibration. The 20V/V gain setting is suitable for applications where the shunt voltage drop is relatively small compared to the system output voltage range. Consider the 70V common-mode limit and 18V supply constraint when designing the interface circuitry for the target application environment.

Part Context

This device belongs to the TPA2295C family of high-voltage current sense amplifiers produced by 3PEAK. The family includes variants with different fixed gains (50V/V, 60V/V, 100V/V, 200V/V) to accommodate various shunt resistor values and signal levels. All members share the same core zero-drift technology and integrated comparator functionality within the MSOP-8 package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer directly for cross-reference recommendations or alternative product lines that meet similar high-voltage and precision current sensing requirements.

FAQ

What is the function of the RESET pin?

The RESET pin is used to reset the internal comparator output. It is active low and allows the user to clear the latched state of the comparator.

Can the device measure currents if the supply voltage is lower than the load voltage?

Yes, the input circuitry can accurately measure beyond its own power-supply voltage. For example, the Vs supply can be 5V while the load supply is up to 70V.

What is the maximum capacitive load the output can drive?

The maximum capacitive load is 0.5 nF without causing oscillation.