MAX9643

60V High-Speed Precision Current-Sense Amplifier

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

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Overview

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

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.

Applications