Linear Technology DC2341A Demo Manual page 2

DEMO MANUAL DC2341A
QUICK START PROCEDURE
Demonstration circuit 2341A is easy to set up to evaluate
the performance of the LTC7130. Refer to Figure 1 for
the proper measurement equipment setup and follow the
procedure below:
1. With power off, connect the input power supply to V
(4.5V to 20V) and GND (input return).
2. Connect the 1.5V output load between V
(Initial load: no load).
3. Connect the DVMs to the input and outputs.
4. Turn on the input power supply and check for the proper
output voltages. V
OUT
2
and GND
OUT
should be 1.5V ±2%.
Figure 1. Proper Measurement Equipment Setup
5. Once the proper output voltages are established, adjust
the loads within the operating range and observe the
output voltage regulation, ripple voltage and other
parameters.
NOTE: When measuring the output or input voltage ripple,
IN
do not use the long ground lead on the oscilloscope probe.
See Figure 2 for the proper scope probe technique. Short,
stiff leads need to be soldered to the (+) and (–) terminals
of an output capacitor. The probe's ground ring needs to
touch the (–) lead and the probe tip needs to touch the
(+) lead.
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