60V High-Speed Precision Current-Sense Amplifier - Maxim Integrated Products
Description
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19-5889; Rev 0; 8/11
EVALUATION KIT AVAILABLE
MAX9643 60V High-Speed Precision Current-Sense Amplifier
General 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 50FV (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 -40NC to +125NC temperature range.
Benefits and Features
S Supports High-Voltage Applications Wide Input VCM = -1.
5V to +60V S Delivers High-Speed Operation 15MHz Bandwidth S Increases System Accuracy Precision VOS = 50µV (max) S -40NC to +125NC Specified Temperature Range
Applications
Industrial and Automotive Power Supplies GSM Base Station Power Supply High-Brightness LED Control Automotive Engine Control H-Bridge Motor Control
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer to www.
maxim-ic.
com/MAX9643.
related.
Typical Operating Circuit
RS+ CP1
RS-
CP2 VEE
OUT VCC GND
BOOST POWER-SUPPLY CONTROL
LOAD
MAX9643
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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.
maxim-ic.
com.
Datasheet pdf - http://www.
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MAX9643 60V High-Speed Precision Current-Sense Amplifier
ABSOLUTE MAXIMUM RATINGS
RS+ to GND, RS- to GND (Note 1).
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