LMP8640

更新时间： 2024-10-26 12:06:07

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
22页	1166K
描述
Precision High Voltage Current Sense Amplifier

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LMP8640 数据手册

LMP8640

LMP8640HV

www.ti.com

SNOSB28F –AUGUST 2010–REVISED APRIL 2013

Precision High Voltage Current Sense Amplifier

Check for Samples: LMP8640, LMP8640HV

FEATURES

DESCRIPTION

The LMP8640 and the LMP8640HV are precision

•

Typical Values, T_A= 25°C

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 2.7V to 12V.

High Common-Mode Voltage Range

–

LMP8640: -2V to 42V

LMP8640HV: -2V to 76V

•

Supply Voltage Range: 2.7V to 12V

Gain Options: 20V/V; 50V/V; 100V/V

Max Gain Error: 0.25%

The LMP8640 accepts input signals with common

mode voltage range from -2V to 42V, while the

LMP8640HV accepts input signal with common mode

voltage range from -2V to 76V. The LMP8640 and

LMP8640HV have fixed gain for applications that

demand accuracy over temperature. The LMP8640

and LMP8640HV come out with three different fixed

Low Offset Voltage: 900µV

Input Bias Current: 13 µA

PSRR: 85 dB

gains 20V/V, 50V/V, 100V/V ensuring

a gain

CMRR (2.1V to 42V): 103 dB

Temperature Range: -40°C to 125°C

6-Pin SOT Package

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, automotive and

consumer applications, and it is available in SOT-6

package.

APPLICATIONS

•

High-Side Current Sense

Vehicle Current Measurement

Motor Controls

Battery Monitoring

Remote Sensing

Power Management

Typical Application

+IN

-IN

LMP8640

ADC

OUT

= 2*R

G = 10 V/V in 20 V/V gain option

G = 25 V/V in 50 V/V gain option

G = 50 V/V in 100 V/V gain option

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...22

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与LMP8640相关器件

型号	品牌	获取价格	描述	数据表
LMP8640_15	TI	获取价格	LMP8640/-Q1/HV Precision High Voltage Current Sense Amplifiers
LMP8640HV	TI	获取价格	Precision High Voltage Current Sense Amplifier
LMP8640HV	NSC	获取价格	Precision High Voltage Current Sense Amplifier
LMP8640HV_15	TI	获取价格	LMP8640/-Q1/HV Precision High Voltage Current Sense Amplifiers
LMP8640HVMKE-F	NSC	获取价格	Precision High Voltage Current Sense Amplifier
LMP8640HVMKE-F	TI	获取价格	Precision High Voltage Current Sense Amplifier
LMP8640HVMKE-F/NOPB	TI	获取价格	-2V 至 76V、950kHz 电流感应放大器 \| DDC \| 6 \| -40 to 1
LMP8640HVMKE-H	TI	获取价格	Precision High Voltage Current Sense Amplifier
LMP8640HVMKE-H	NSC	获取价格	Precision High Voltage Current Sense Amplifier
LMP8640HVMKE-H/NOPB	TI	获取价格	-2 to 76V, 950kHz current sense amplifier 6-SOT-23-THIN -40 to 125

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