MAX44284

36V, Input Common-Mode, High-Precision, Low-Power Current-Sense Amplifier

Measure Four Decades of Dynamic Range without Increasing Measurement Errors


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说明

The MAX44284 is a high-side, current-sense amplifier that operates with a 1.7V to 5.5V single supply and is optimized for very low power operation with only 21µA of quiescent current.

The MAX44284 offers precision accuracy specifications of 2µV VOS and gain error of 0.05%. The device features an input common-mode voltage range from -0.1V to +36V. This current-sense amplifier has a voltage output and is offered in four different gain versions.

The MAX44284 is offered in small 6-bump, 0.4mm-pitch WLP (1.3mm x 0.9mm) and 6-pin SOT23 packages and is specified for operation over the -40°C to +125°C automotive temperature range.

MAX44284: Typical Application Circuit MAX44284: Typical Application Circuit 放大+

关键特性

  • Supports Use of Small Current-Sense Resistors to Improve Power-Supply Conversion Efficiency and Measurement Accuracy
    • Input Bias Current of 80nA (max)
    • Very Low 2µV Input Offset Voltage (MAX44284F/H)
    • Extremely Low 50nV/°C Input Offset Tempco Coefficient
    • -0.1V to +36V Wide Input Common-Mode Range
    • Low 0.05% Gain Error
  • Extends Battery Life
    • Low Supply Current of 21µA
    • 1.7V to 5.5V Single Supply
    • Shutdown Input (Independent of VDD)
  • Four Fixed Gain Options Simplify Design
    • 50V/V – MAX44284F
    • 100V/V – MAX44284H
    • 200V/V – MAX44284W
    • 500V/V – MAX44284E

应用

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  • 笔记本电脑
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  • 智能手机和平板电脑
Part NumberOutput FormatCMVR
(V)
CMVR
(V)
VCC
(V)
VCC
(V)
ICC
(µA)
Bi-Dir. Curr. SenseVSENSE_FS
(mV)
VOS @25°C
(µV)
GainGain Accuracy @25°C
(%)
BW
(kHz)
Comp-
arators
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtyprecomm.maxmax@ -3dBSee Notes
MAX44284 Voltage-0.1361.75.521No
10
25
50
100
10
50 V/V
100 V/V
200 V/V
500 V/V
0.1530-40 to +125
SOT-23/6
WLP/6
$0.93 @1k
查看所有Current Sense Amplifiers (53)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX44284EVKIT: Evaluation Kit for the MAX44284

技术资料

应用笔记 6329 How to Accurately Calculate Overcurrent in High-Side Current-Sense Amplifiers

质量和环境数据

产品可靠性报告: MAX44284.pdf 
无铅封装的锡(Sn)晶须报告

其它资源

顶标 MAX44284

工具和模型

  • MAX44284 Orcad库文件
  • CAD Symbols and Footprints

  • MAX44284EAUT+
  • MAX44284EAUT+T
  • MAX44284EAWT+
  • MAX44284EAWT+T
  • MAX44284FAUT+
  • MAX44284FAUT+T
  • MAX44284FAWT+
  • MAX44284FAWT+T
  • MAX44284HANT+
  • MAX44284HANT+T
  • MAX44284HAUT+
  • MAX44284HAUT+T
  • MAX44284HAWT+
  • MAX44284HAWT+T
  • MAX44284WAUT+
  • MAX44284WAUT+T
  • MAX44284WAWT+
  • MAX44284WAWT+T
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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