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60V High-Speed Precision Current-Sense Amplifier

Industry's Fastest Current-Sense Amplifier Also Offers Outstanding 130µV VOS Precision

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Key Features

  • Supports High-Voltage Applications
    • Wide Input VCM = -1.5V to +60V
  • Delivers High-Speed Operation
    • 15MHz Bandwidth
  • Increases System Accuracy
    • Precision VOS = 130µV (max)
  • -40°C to +125°C Specified Temperature Range

Applications/Uses

  • GSM Base Station Power Supply
  • H-Bridge Motor Control
  • High-Brightness LED Control
  • Industrial Power Supplies

Description

The MAX9643 is a high-speed 60V precision unidirectional current-sense amplifier ideal for a wide variety of power-supply control applications. Its high signal bandwidth allows its use within DC-DC switching converter power-supply control loops with minimal phase delay.

The IC also features 130µV (max) precision input offset voltage, allowing small sense resistors to be used in applications where efficiency is important and when wide dynamic-range current measurement is needed.

High DC CMRR and AC CMRR make it easy to use in a wide variety of aggressive environments. The device is available in fixed gains of 2.5V/V and 10V/V. It is also available in a small, 8-pin TDFN (2mm x 3mm) package and is rated over the -40°C to +125°C temperature range.

Simplified Block Diagram

MAX9643: Typical Operating Circuit MAX9643: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.