Installation and Operation
©
2006 Microchip Technology Inc.
DS51510B-page 13
2.5
EVALUATING THE DEVICE
When evaluating a Voltage Supervisor or Voltage Detector device, a minimum set of
test equipment should be available. Table 2-3 shows the recommended test
equipment.
TABLE 2-3:
TEST EQUIPMENT
A typical system that would be used to evaluate the voltage supervisor or voltage
detector device is shown in Figure 2-4. Figure 2-4 also shows an example input and
output waveforms for a voltage supervisor or voltage detector device.
FIGURE 2-4:
EVALUATION SYSTEM
Hardware
Connect to:
Comment
Variable Power
Supply
V
DD
, V
SS
This allows the voltage to the SOT23 Evaluation Board
to be varied so the device output can be monitored.
Arbitary
Waveform
Generator
V
DD
, V
SS
This is like a variable power supply, but allows program-
ablity into the input signal that the device will be
subjected to. This also allows a particular waveform to
be repeated (such as a 60 Hz sine wave that varies from
1V to 5V)
Digital Multi-Meter
(D.M.M.)
V
OUT
Used to indicate the output state (Low or High) of the
Voltage Supervisor/Voltage Detector.
Oscilloscope
V
OUT
Allows the device conditions and response to be better
evaluated due to the ability to capture this information.
This is useful for faster signals and cases where small
spikes need to be detected.
Test Light (LED)
V
OUT
Used to visually indicate the output state (low or high) of
the Voltage Supervisor/Voltage Detector. Ensure that the
current requirements of this light can be supplied by the
device’s output pin.
Variable
Voltage
R3
Test Point
Arbitary Waveform
Generator
Output
Test
Point or
SOT23 Evaluation Board PCB
C2
Supervisor
or
Voltage
Detector
Power
Supply
or
Arbitary
Waveform
Device V
DD
out of Valid Operating Range
Oscilloscope
Output voltage may be indeterminate
Generator
V
OUT
