Analog Devices ADP121 Evaluation Board ADP121CB-1.8-EVALZ ADP121CB-1.8-EVALZ Fiche De Données
Codes de produits
ADP121CB-1.8-EVALZ
EVAL-ADP121
Rev. A | Page 6 of 8
MEASURING GROUND CURRENT
07
14
0-
0
07
GND
GND
ANALOG DEVICES
ADP121-xx-EVALZ
ADP121-xx-EVALZ
VOUT
GND
C2
C1
U1
VIN
GND
EN
J1
VOLTAGE SOURCE
LOAD
AMMETER
+
–
+
–
Figure 11. Ground Current Measurement, TSOT
07
14
0-
0
16
LOAD
AMMETER
+
–
+
–
VOLTAGE SOURCE
Figure 12. Ground Current Measurement, WLCSP
Figure 11 and Figure 12 show the evaluation board connected
to a voltage source and an ammeter for ground current measure-
ments. A resistor can be used as the load for the regulator.
Ensure that the resistor has a power rating that is adequate to
handle the power expected to be dissipated across it. An electronic
load can be used as an alternative. Ensure that the voltage source
used can supply enough current for the expected load levels.
to a voltage source and an ammeter for ground current measure-
ments. A resistor can be used as the load for the regulator.
Ensure that the resistor has a power rating that is adequate to
handle the power expected to be dissipated across it. An electronic
load can be used as an alternative. Ensure that the voltage source
used can supply enough current for the expected load levels.
Use the following steps to connect to a voltage source and
ammeter:
ammeter:
1. Connect the positive terminal (+) of the voltage source to
the VIN pad on the evaluation board.
2. Connect the positive terminal (+) of the ammeter to one of
the GND pads of the evaluation board.
3. Connect the negative terminal (−) of the ammeter to the
negative (−) terminal of the voltage source.
4. Connect a load between the negative (−) terminal of the
voltage source and the VOUT pad of the evaluation board.
The voltage source can now be turned on. If J1 or J2 is inserted
(connecting EN to VIN for automatic startup), the regulator
powers up.
(connecting EN to VIN for automatic startup), the regulator
powers up.