LMP8640HVMK-T/NOPB Datasheet Information

Overview

The LMP8640HVMK-T/NOPB is a precision high voltage current sense amplifier from Texas Instruments, designed for applications requiring high common-mode voltage measurement. It features a fixed gain of 100V/V and is suitable for sensing small differential voltages across a sense resistor in the presence of high input common-mode voltages.

Key Features

• Common-Mode Voltage Range: -2V to 76V
• Supply Voltage Range: 2.7V to 12V
• Gain: 100V/V
• Max Gain Error: 0.51%
• Low Offset Voltage: ±1160µV (over temperature)
• Input Bias Current: 27µA to 28µA (over temperature)
• PSRR: 85dB
• CMRR: 103dB (2.1V to 42V), 95dB (2.1V to 76V)
• Operating Temperature Range: -40°C to 125°C
• Package: 6-Pin Thin SOT-23 (Pb-free)

Ordering Information

• Part Number: LMP8640HVMK-T/NOPB
• Status: Active
• Material Type: Production
• Package: SOT-23-THIN (DDC) | 6
• Package Quantity: 3000
• Carrier: LARGE T&R
• RoHS Compliance: Yes
• Lead Finish/Ball Material: NIPDAU
• MSL Rating/Peak Reflow: Level-1-260C-UNLIM
• Operating Temperature Range: -40°C to 125°C
• Part Marking: AB6A

Pin Configuration and Functions

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Absolute Maximum Ratings

• Supply Voltage (VS = V+ - V-): -0.3V to 13.2V
• Differential Voltage (+IN - (-IN)): -6V to 6V
• Voltage at Pins +IN, -IN (LMP8640HV): -6V to 80V
• Voltage at VOUT Pin: V- to V+
• Junction Temperature: -40°C to 150°C

Recommended Operating Conditions

• Supply Voltage (VS = V+ - V-): 2.7V to 12V
• Operating Junction Temperature Range: -40°C to 125°C

Electrical Characteristics (2.7V)

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Typical Performance Curves

<figure><span>13.0 12.0 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 100 200 300 400 500 600 GAIN 100V/V VS=12V,VCM=12V</span></figure>

Applications

The LMP8640HVMK-T/NOPB is ideal for:

• High-Side Current Sense
• Vehicle Current Measurement
• Motor Controls
• Battery Monitoring
• Remote Sensing
• Power Management

Detailed Description

The LMP8640HVMK-T/NOPB is a high precision current sense amplifier designed to detect small differential voltages across a sense resistor in the presence of high input common-mode voltages. It features a fixed gain of 100V/V and is suitable for applications requiring high accuracy over temperature.

Layout Guidelines

• Use 4-wire (Kelvin) connections to the sense resistor.
• Maintain proper clearance and spacing around the input traces.
• Place the amplifier away from heat-generating devices.
• Use a power-supply bypass capacitor (0.1µF) close to the supply and ground terminals.