Datasheet > LMP8278Q

LMP8278Q

更新时间： 2024-11-23 11:58:03

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
17页	392K
描述
High Common Mode, 14 x Gain, Precision Current Sensing Amplifier

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LMP8278Q 数据手册

February 9, 2012

LMP8278Q

High Common Mode, 14 x Gain, Precision Current Sensing

Amplifier

General Description

Features

The LMP8278 is a fixed 14x gain precision current sense

amplifier. The part amplifies and filters small differential

signals in the presence of high common mode voltages. The

part operates from a single 5V supply voltage. With an input

common mode voltage range from -2V to +28V the gain is

very precise (±0.5%). The part can handle common mode

voltages in the range -2V to +40V with relaxed specifications.

The LMP8278 is a member of the Linear Monolithic Precision

(LMP^®) family and is ideal for unidirectional current sensing

applications. The parameter values that are shown in the

Electrical Characteristics table are 100% tested and all bold

values are also 100% tested over temperature, unless other-

wise noted.

TCVos

±15μV/°C max

80 dB min

■

CMRR

Input offset voltage

CMVR

■

±2 mV max

−2V to 40V

■

Operating ambient temperature range −40°C to 125°C

Single supply operation

Min / Max limits 100% tested unless otherwise noted

LMP8278Q available in Automotive AEC-Q100 Grade 1

qualified version

Applications

High side and low side driver configuration current sensing

■

The part has a precise gain of 14x which is adequate in most

targeted applications to drive an ADC to its full scale value.

The fixed gain is achieved in two separate stages, a pream-

plifier with a gain of 7x and an output stage buffer amplifier

with a gain of 2x. The connection between the two stages of

the signal path is brought out on two pins to enable the pos-

sibility to create an additional filter network around the output

buffer amplifier. These pins can also be used for alternative

configurations with different gain as described in the applica-

tions section.

Automotive fuel injection control

Transmission control

Power steering

Battery management systems

■

The LMP8278Q incorporates enhanced manufacturing and

support processes for the automotive market, including defect

detection methodologies. Reliability qualification is compliant

with the requirements and temperature grades defined in the

AEC Q100 standard.

Typical Applications

30088101

LMP^®is a registered trademark of National Semiconductor Corporation.

300881 SNAS575

www.ti.com

12 3 4 5 6 7...17

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与LMP8278Q相关器件

型号	品牌	获取价格	描述	数据表
LMP8278QMM/NOPB	TI	获取价格	High Common Mode, 14 x Gain, Precision Current Sensing Amplifier
LMP8278QMME/NOPB	TI	获取价格	High Common Mode, 14 x Gain, Precision Current Sensing Amplifier
LMP8278QMMX/NOPB	TI	获取价格	High Common Mode, 14 x Gain, Precision Current Sensing Amplifier
LMP8278Q-Q1	TI	获取价格	High Common Mode, 14 x Gain, Precision Current Sensing Amplifier
LMP8350	TI	获取价格	Ultra Low Distortion Fully Differential Precision ADC Driver with Selectable Power Modes
LMP8350MA	TI	获取价格	Ultra Low Distortion Fully Differential Precision ADC Driver with Selectable Power Modes
LMP8350MA/NOPB	TI	获取价格	Ultra Low Distortion Fully Differential Precision ADC Driver with Selectable Power Modes 8
LMP8350MAX	TI	获取价格	Ultra Low Distortion Fully Differential Precision ADC Driver with Selectable Power Modes
LMP8350MAX/NOPB	TI	获取价格	具有可选功率模式的超低失真全差动精密 ADC 驱动器 \| D \| 8 \| -40 to 8
LMP8358	NSC	获取价格	Zero-Drift, Programmable Instrumentation Amplifier with Diagnostics

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