LMP8640MK-H/NOPB

Instrumentation, Op Amps, Buffer Amps Overview

The LMP8640MK-H/NOPB is a precision high-voltage current sense amplifier manufactured by Texas Instruments. It operates with a common-mode voltage range of -2 V to 42 V and features a gain bandwidth product of 450 kHz. The device supports supply voltages between 2.7 V and 12 V, with an input bias current of 12 uA and an input offset voltage of 900 uV. It is housed in a SOT-23-THN (DDC) package with six pins and functions within a temperature range of -40°C to 125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Detects small differential voltages across sense resistors with high common-mode voltage tolerance
• Provides voltage output for current sensing applications
• Operates in low-side or high-side configurations

Instrumentation, Op Amps, Buffer Amps Applications

• Industrial process control systems
• Power supply monitoring
• Motor control circuits

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the complete part number including suffixes such as MK-H/NOPB to ensure correct package type and tape-and-reel specifications. Confirm that the supplier provides original manufacturer documentation. Check for RoHS compliance markings if required by your manufacturing standards. Ensure storage conditions align with the specified operating temperature range to maintain component integrity prior to assembly.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a wide common-mode voltage range up to 42 V is required for high-side or low-side current sensing. Consider the 450 kHz gain bandwidth product for applications requiring moderate speed. Evaluate the 900 uV input offset voltage against system accuracy requirements. The SOT-23-THN package is suitable for space-constrained designs needing thermal performance.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LMP8640 family of precision high-voltage current sense amplifiers from Texas Instruments. The family includes variants such as LMP8640-Q1 and LMP8640-HV, which share similar core functionalities but may differ in automotive qualification or specific electrical characteristics. The LMP8640MK-H/NOPB represents a specific commercial-grade version in a defined package configuration.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes include other parts within the LMP8640 series, such as LMP8640MKX-H/NOPB, which shares identical electrical specifications but differs in packaging format. Verify pin compatibility and thermal characteristics before substitution.