Integrated Circuits (ICs)

LMP8640QMKX-T/NOPB

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AEC-Q100, -2 TO 42V, 950KHZ CURRENT SENSE AMPLIFIER

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Search across all available documentation for this part.

DocumentsUsing a PCB Copper Trace as a Current-Sense Shunt Resistor LMP8640/-Q1/HV Precision High Voltage Current Sense Amplifiers datasheet (Rev. G)+1

Integrated Circuits (ICs)

LMP8640QMKX-T/NOPB

Active

Texas Instruments

AEC-Q100, -2 TO 42V, 950KHZ CURRENT SENSE AMPLIFIER

Deep-Dive with AI

DocumentsUsing a PCB Copper Trace as a Current-Sense Shunt Resistor LMP8640/-Q1/HV Precision High Voltage Current Sense Amplifiers datasheet (Rev. G)+1

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LMP8640QMKX-T/NOPB

Amplifier Type	Current Sense
Current - Input Bias	13 µA
Current - Supply	2.3 mA
Gain Bandwidth Product	950 kHz
Grade	Automotive
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case	TSOT-23-6, SOT-23-6 Thin
Qualification	AEC-Q100
Slew Rate	1.8 V/µs
Supplier Device Package	SOT-23-THIN
Voltage - Input Offset	900 µV
Voltage - Supply Span (Max) [Max]	12 V
Voltage - Supply Span (Min) [Min]	2.7 V

LMP8640-Q1 Series

AEC-Q100, -2 to 42V, 950kHz current sense amplifier

Part	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Voltage - Input Offset	Voltage - Supply Span (Max) [Max]	Current - Supply	Amplifier Type	Slew Rate	Supplier Device Package	Voltage - Supply Span (Min) [Min]	Package / Case	Number of Circuits	Gain Bandwidth Product	Current - Input Bias	Grade	Qualification	Board Type	Output Type	Current - Supply (Main IC)	Supplied Contents	Utilized IC / Part	Channels per IC	Voltage - Supply, Single/Dual (±) [Max]	Voltage - Supply, Single/Dual (±) [Min]
Texas Instruments LMP8640MKE-F/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	450 kHz	13 µA
Texas Instruments LMP8640MKX-T/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	950 kHz	13 µA
Texas Instruments LMP8640QMKX-T/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	950 kHz	13 µA	Automotive	AEC-Q100
Texas Instruments LMP8640HV-HEVAL/NOPB							Current Sense	1.8 V/µs									Fully Populated	Differential	130 µA	Board(s)	LMP8640HV-H	1 - Single	12 V	2.7 V
Texas Instruments LMP8640MK-T/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	950 kHz	13 µA
Texas Instruments LMP8640HVMKE-F/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	450 kHz	13 µA
Texas Instruments LMP8640MKE-T/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	950 kHz	13 µA
Texas Instruments LMP8640HVMKX-F/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	450 kHz	13 µA
Texas Instruments LMP8640HVMKE-H/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	230 kHz	13 µA
Texas Instruments LMP8640HVMKX-T/NOPB	125 °C	-40 °C	Surface Mount	900 µV	12 V	2.3 mA	Current Sense	1.8 V/µs	SOT-23-THIN	2.7 V	SOT-23-6 Thin TSOT-23-6	1	950 kHz	13 µA

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.72
		10	$ 2.45
		25	$ 2.31
		100	$ 2.00
		250	$ 1.90
		500	$ 1.71
		1000	$ 1.44
	Digi-Reel®	1	$ 2.72
		10	$ 2.45
		25	$ 2.31
		100	$ 2.00
		250	$ 1.90
		500	$ 1.71
		1000	$ 1.44
	Tape & Reel (TR)	3000	$ 1.37
		6000	$ 1.32
Texas Instruments	LARGE T&R	1	$ 2.01
		100	$ 1.66
		250	$ 1.19
		1000	$ 0.90

Description

General part information

LMP8640-Q1 Series

The LMP8640, LMP8640-Q1 and the LMP8640HV are precision current sense amplifiers that detect small differential voltages across a sense resistor in the presence of high input common mode voltages with a supply voltage range from 2.7 V to 12 V.

The LMP8640 and LMP8640-Q1 accept input signals with common mode voltage range from –2 V to 42 V, while the LMP8640HV accepts input signal with common mode voltage range from –2 V to 76 V. The LMP8640 and LMP8640HV have fixed gain for applications that demand accuracy over temperature. The LMP8640 and LMP8640HV come out with three different fixed gains 20 V/V, 50 V/V, 100 V/V ensuring a gain accuracy as low as 0.25%. The output is buffered in order to provide low output impedance. This high side current sense amplifier is ideal for sensing and monitoring currents in DC or battery powered systems, excellent AC and DC specifications over temperature, and keeps errors in the current sense loop to a minimum. The LMP8640 and LMP8640HV are ideal choice for industrial and consumer applications, while the LMP8640-Q1 is an AEC-Q100 grade 1 qualified version of the LMP8640 for automotive applications. The LMP8640-x is available in SOT-23-6 package.

Documents

Technical documentation and resources

Using a PCB Copper Trace as a Current-Sense Shunt Resistor

Application note

LMP8640/-Q1/HV Precision High Voltage Current Sense Amplifiers datasheet (Rev. G)

Data sheet

Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers

Application note