ADM1192 Analog Devices, ADM1192 Datasheet - Page 17

• Manufacturer Part Number: ADM1192
• Description: Digital Power Monitor with Clear Pin and ALERT Output
• Manufacturer: Analog Devices

Specifications of ADM1192

• Max Pos Supply (v): +26V
• Current Monitoring: 2
• Glitch Filter: Programmable Timer
• Clrb Pin: X
• Alert/alertb: ALERT
• Number Of I2c Addresses: 4
• Package: MSOP

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.
Rev. B | Page 17 of 20
KELVIN SENSE TRACES
CURRENT
FLOW FROM
SUPPLY
Figure 30. Kelvin Sense Connections
ADM1192
SENSE RESISTOR
VCC
SENSE
ADM1192
CURRENT
FLOW TO
LOAD