TPA2295CH-VS1R-S

Overview

The TPA2295CH-VS1R-S is a high-voltage, high-side current sense amplifier from the TPA2295C family. It features an internal comparator with latch control and a 0.6V reference. The device offers a gain of 100V/V, supporting a wide common-mode voltage range from -0.1V to +70V. It operates on a single supply voltage between 3.0V and 18V. Key performance metrics include a maximum input offset voltage of ±500μV over the temperature range and a bandwidth of 500kHz. The component provides excellent accuracy with a maximum gain error of ±0.5% and low drift characteristics.

Feature Summary

• Zero-drift core technology ensures minimal offset drift across operating temperatures.
• Integrated open-drain comparator with latching capability and internal voltage reference.
• High common-mode rejection ratio for accurate sensing in noisy environments.
• Capable of measuring current drops across shunts at high common-mode voltages.

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 the specific suffix VS1R-S corresponds to the MSOP-8 tape and reel packaging configuration. Confirm that the 100V/V gain variant matches the design requirements for the target application. Ensure compatibility with the specified supply voltage range and thermal constraints during integration.

Selection Notes

Select this model when a fixed 100V/V gain is required for precise current monitoring. Consider the integrated comparator if fault detection logic is needed without external components. Evaluate the zero-drift performance benefits for applications requiring low full-scale sense voltage drops to minimize power dissipation.

Part Context

This component belongs to the TPA2295C family of high-voltage current sense amplifiers. The family includes variants with different gain options (20V/V, 50V/V, 60V/V, 100V/V, 200V/V). All members share the same package, pinout, and core zero-drift architecture, differing primarily in their output scaling factors.

Replacement Considerations

Direct substitutes within the TPA2295C family include TPA2295CT, TPA2295CF, TPA2295CS, and TPA2295CW. These parts are pin-compatible but offer different gains. Verify that the alternative gain factor aligns with the system's signal conditioning 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 voltages higher than its supply voltage?

Yes, the input circuitry can accurately measure common-mode voltages up to 70V even if the supply voltage (Vs) is lower, such as 5V. However, the output swing is limited by the supply voltage.

What is the typical response time of the internal comparator?

The internal comparator has a typical response time of 1 microsecond.