ADM1192-1ARMZ-R7 datasheet(17/20 Pages) AD

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ADM1192-1ARMZ-R7 Datasheet(PDF) 17 Page - Analog Devices

Part #	ADM1192-1ARMZ-R7

Description	Digital Power Monitor with Clear Pin and ALERT Output

PDF	20 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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17 / 20 page

ADM1192

Rev. B | Page 17 of 20

KELVIN SENSE RESISTOR CONNECTION

When using a low value sense resistor for high current measure-

ment, the problem of parasitic series resistance can arise. The

lead resistance can be a substantial fraction of the rated resistance,

making the total resistance a function of lead length. This problem

can be avoided by using a Kelvin sense connection. This type of

connection separates the current path through the resistor and

the voltage drop across the resistor. Figure 30 shows the correct

way to connect the sense resistor between the VCC pin and the

SENSE pin of the ADM1192.

SENSE RESISTOR

KELVIN SENSE TRACES

VCC

SENSE

ADM1192

CURRENT

FLOW FROM

SUPPLY

CURRENT

FLOW TO

LOAD

Figure 30. Kelvin Sense Connections

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