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LMP8640MK-T/NOPB

-2 to 42V, 950kHz current sense amplifier

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LMP8640MK-T/NOPB
Datasheet:

LMP8640MK-T/NOPB Datasheet (PDF)
Common-mode voltage (max) (V):

42
Common-mode voltage (min) (V):

-2
Input offset (±) (max) (µV):

900
Input offset drift (±) (typ) (µV/°C):

1.2
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LMP8640MK-T/NOPB General Description

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.

Key Features

Typical Values, T_A = 25°C
High Common-Mode Voltage Range
- LMP8640: –2 V to 42 V
- LMP8640-Q1: –2 V to 42 V, AEC-Q100
- LMP8640HV: –2 V to 76 V
Supply Voltage Range: 2.7 V to 12 V
Gain Options: 20 V/V; 50 V/V; 100 V/V
Max Gain Error: 0.25%
Low Offset Voltage: 900 µV
Input Bias Current: 13 µA
PSRR: 85 dB
CMRR (2.1V to 42V): 103 dB
Temperature Range: –40°C to 125°C
6-Pin Thin SOT-23 Package

Specifications

Product type	Analog output	Common-mode voltage (max) (V)	42
Common-mode voltage (min) (V)	-2	Input offset (±) (max) (µV)	900
Input offset drift (±) (typ) (µV/°C)	1.2	Voltage gain (V/V)	20, 50, 100
CMRR (min) (dB)	60	Bandwidth (kHz)	230, 450, 950
Supply voltage (max) (V)	12	Supply voltage (min) (V)	2.7
Iq (max) (mA)	0.722	Number of channels	1
Comparators (#)	0	Gain error (%)	0.25
Gain error drift (±) (max) (ppm/°C)	26.2	Slew rate (V/µs)	1.6
Features	Low-side Capable	Rating	Catalog
Operating temperature range (°C)	-40 to 125	feature-type	Current Sense Amplifier
feature-number-of-elements-per-chip	1	feature-number-of-channels-per-chip	1
feature-rail-to-rail		feature-typical-gain-bandwidth-product-mhz
feature-maximum-voltage-gain-db	26.02(Typ)	feature-minimum-cmrr-db	60
feature-minimum-psrr-db	85	feature-output-type
feature-maximum-input-offset-voltage-mv	0.9@5V	feature-maximum-input-bias-current-ua	21@5V
feature-maximum-input-resistance-mohm	0.005(Typ)@5V	feature-maximum-power-dissipation-mw
feature-packaging	Tape and Reel	feature-rad-hard
feature-pin-count	6	feature-cecc-qualified	No
feature-esd-protection	Yes	feature-escc-qualified
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-eccn-code	EAR99
feature-svhc	No	feature-svhc-exceeds-threshold	No

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Ratings and Reviews

C**b 04/14/2024

defective product there is. no repsonenfrom the seller about the connection. it get switched off even when you are in the bathroom. bathroom is the place I have connected.

M**a 07/31/2020

Impressed by the originality of the TMC2160-TA components provided by Avaq. Undoubtedly, a trusted and reliable distributor!

A**e 05/18/2020

Speedy as lightning! Avaq's delivery service amazed me. My order arrived earlier than expected, allowing me to proceed with my project without a hitch. Well done!

M**n 03/15/2020

Pleasantly surprised the size of the crystal. In comparison with the led for 30 ma, this is really designed for 150 ma. (5 or more times larger). Before that, i wrote similar diodes in another store, so the crystals there were 2 times less than the leds in 30 ma.But there are drawbacks: about 5% leds have cracks in the housings, but nevertheless everything shines.