Datasheet MAX4172 (Maxim) - 8

MAX4172 Low-Cost, Precision, High-Side Current-Sense Amplifier
Power-Supply Bypassing and Grounding Chip Information
In most applications, grounding the MAX4172 requires no SUBSTRATE CONNECTED TO GND special precautions. However, in high-current systems, large voltage drops can develop across the ground plane, which can add to or subtract from VOUT. Use a single-point star ground for the highest currentmeasurement accuracy. The MAX4172 requires no special bypassing and responds quickly to transient changes in line current. If the noise at OUT caused by these transients is a problem, you can place a 1μF capacitor at the OUT pin to ground. You can also place a large capacitor at the RS terminal (or load side of the MAX4172) to decouple the load, reducing the current transients. These capacitors are not required for MAX4172 operation or stability. The RS+ and RS- inputs can be filtered by placing a capacitor (e.g., 1μF) between them to average the sensed current.
Package Information
For the latest package outline information and land patterns (footprints), go to
www.maximintegrated.com/packages
. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
SO S8+4
21-0041 90-0096
μMAX U8+1
21-0036 90-0092
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