Datasheet

MAX4554/MAX4555/MAX4556
Force-Sense Switches
18 ______________________________________________________________________________________
+SENSE
GUARD AMPLIFIER
V+
V-
V+
V-
V+
V+
V-
CURRENT SENSE
LEAKAGE CURRENT
LOAD
V+
V-
V+
V-
TRIAX CABLE
+ FORCE-GUARD AMPLIFIER
- FORCE-GUARD AMPLIFIER
V+
V-
V+
V-
TRIAX CABLE/CONNECTOR
CENTER WIRE (FORCE/SENSE)
INNER SHEILD (GUARD)
OUTER SHEILD (GROUND)
+ FORCE-SENSE AMPLIFIER
12-WIRE PRECISION SOURCE-MONITOR
VOLTAGE SOURCE
- SENSE-GUARD AMPLIFIER
CURRENT SENSE
- FORCE-SENSE AMPLIFIER
LEAKAGE CURRENT
LEAKAGE CURRENT
GROUND
- GUARD
- FORCE
GROUND
- GUARD
-SENSE
TRIAX CABLE
TRIAX CABLE
(OPTIONAL GROUND)
LEAKAGE CURRENT
+SENSE
+GUARD
GROUND
+FORCE
+GUARD
GROUND
TRIAX CABLE
V
V
Figure 4. 12-Wire Guarded Force-Sense Measurements