Datasheet > MAX49918

MAX49918

更新时间： 2024-04-09 19:02:34

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
17页	1996K
描述
Bidirectional, On-The-Fly Programmable Gain, Current-Sense Amplifier with Wide Measurement Range

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MAX49918 数据手册

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Bidirectional, On-The-Fly Programmable

MAX49918

Gain, Current-Sense Amplifier with Wide

Measurement Range

General Description

Benefits and Features

The MAX49918 is a high-precision current-sense

amplifier (CSA) with an I C programmable gain option

from 10V/V to 200V/V in 8 steps. The multiple

programmable gain options offer maximum flexibility for

the user to change gain on-the-fly.

•

Programmable Gain Options through I C from 10V/V

to 200V/V (8 steps)

±1μV (typ) Input Offset Voltage for REF1 = REF2 =

±5μV (typ) Input Offset Voltage for REF1 = V

and

The IC operating input common-mode range from -5V to

+70V, with protections that extend down to -6V and up

to +80V, thus providing protection against reverse-

battery and high-voltage spikes.

REF2 = GND at Gain = 20V/V

±0.01% (typ) Gain Error

-5V to +70V Input Voltage Range

-6V to +80V Protective Immunity

70kHz, -3dB Bandwidth at Gain = 20V/V

145dB DC CMRR

Rail-to-Rail Output

3mm x 3mm, TDFN-10 Package

-40°C to +125°C Temperature Range

•

The low input offset of ±1μV (typ) and low gain error of

±0.01% (typ) make this device best-suited for high-

precision current measurements.

The IC operates from a supply voltage of +2.7V to +5.5V

with a typical quiescent supply at 0.7mA. The device

operates over the full -40°C to +125°C temperature

range.

Ordering Information appears at end of data sheet.

The IC features bidirectional current sensing and is

offered in a 3mm x 3mm, 10-pin TDFN package.

Applications

•

Monitoring Distinct Current Levels

Using the Same Current-Sense Resistors Across

Multiple System Variants

•

Requires a Non-Typical Gain Value Due to Sense

Resistor Constraints

•

H-Bridge Motor and Solenoid Current Sensing

Battery Current Monitoring

High- and Low-Side Precision Current Sensing

19-101747; Rev 0; 9/23

12 3 4 5 6 7...17

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