Adm8613-Evalz; Adm8614-Evalz - Analog Devices ADM8611 User Manual

ADM8611-EVALZ to

ADM8613-EVALZ

This section explains how to evaluate the performance of the
ADM8613. Refer to Figure 3, Figure 8, Figure 13, Figure 18, and
Figure 21 for proper setup, and use the following procedure:
1. Connect the power supply and the oscilloscope to the
ADM8613-EVALZ, as shown in the connection diagram
(see Figure 8).
2. Use Channel 1 and Channel 2 on the oscilloscope to
monitor the ADM8613-EVALZ RESET# pin and VCC pin,
respectively.
3. Use an external jumper to short the ADM8613-EVALZ
LED pin and to monitor the RESET# pin with the built in
LED.
4. For the default configuration, set the ADM8613-EVALZ
VCC pin voltage to 2.5 V and use an external jumper to
short the middle pin of the ADM8613-EVALZ WD_DIS
pin to ground.
5. Take the following steps to check the watchdog timer and
the output:
a. During the default configuration, the ADM8613-
EVALZ RESET# pin output alternately goes from high
to low and from low to high. The built in LED also
turns from on to off and from off to on. The duration
that the ADM8613-EVALZ RESET# pin is high and
the built in LED is on is equivalent to the watchdog
timeout period. The duration that the ADM8613-
EVALZ RESET# pin is low and the built in LED is off
is equivalent to the reset timeout period.
b. Change the configuration of the external jumper on
the ADM8613-EVALZ WD_DIS pin and use it to
short the middle pin of the ADM8613-EVALZ
WD_DIS pin to VCC. This configuration disables the
watchdog timer. The ADM8613-EVALZ RESET# pin
maintains its output to high and the built in LED to
the on state when the watchdog timer is disabled.
c. Keep the external jumper on the ADM8613-EVALZ
WD_DIS pin to VCC.
6. Take the following steps to check the manual reset JP1 tact
switch and the output:
a. Press and hold the ADM8613-EVALZ JP1 tact switch
to short the ADM8613
LED turns off and the ADM8613-EVALZ RESET# pin
goes low.
b. Release the ADM8613-EVALZ JP1 tact switch. The
built in LED turns from off to on and the ADM8613-
EVALZ RESET# pin goes from low to high.
7. Take the following steps to check the input:
a. Vary the supply voltage of the ADM8613-EVALZ
VCC pin slowly from 2.5 V to 2 V while monitoring
the ADM8613-EVALZ RESET# pin waveform until the
RESET# pin goes low. Record the V
voltage of the VCC pin at the point where the RESET#
pin goes low.
ADM8615-EVALZ User Guide
MR pin to ground. The built in
CC_RESET_THRESH_FALL
b. Vary the supply voltage of the ADM8613-EVALZ
VCC pin slowly from 2 V to 2.5 V while monitoring
the ADM8613-EVALZ RESET# pin waveform until the
RESET# pin goes high. Record the V
voltage of the VCC pin at the point where the RESET#
pin goes high.
The value of V
on the ADM8613-EVALZ is about 2.32 V (2.290 V to
2.350 V).
8. Take the following steps to check the watchdog input and
the output:
a. Use the default configuration of the ADM8613-EVALZ
in Step 4.
b. Apply a 1 kHz square wave with a logic high level of
2 V and logic low level of 0 V to the ADM8613-EVALZ
WDI pin. The ADM8613-EVALZ RESET# pin
maintains its output to high and the built in LED
remains in the on state.

ADM8614-EVALZ

This section explains how to evaluate the performance of the
ADM8614. Refer to Figure 4, Figure 9, Figure 14, Figure 22, and
Figure 24 for proper setup, and use the following procedure:
1. Connect the power supply and the oscilloscope to the
ADM8614-EVALZ, as shown in the connection diagram
(see Figure 9).
2. Use Channel 1 and Channel 2 on the oscilloscope to
monitor the ADM8614-EVALZ RESET# pin and VCC pin,
respectively.
3. Use an external jumper to short the ADM8614-EVALZ
LED pin and to monitor the RESET# pin with the built in
LED.
4. Take the following steps for the default configuration:
a. Set the ADM8614-EVALZ VCC pin voltage to 3 V.
b. Use an external jumper to short the middle pin of the
ADM8614-EVALZ WD_DIS pin to ground.
c. Use another external jumper to short the middle pin
of the ADM8614-EVALZ WDT_SEL pin to ground.
5. Take the following steps to check the watchdog timer and
the output:
a. During the default configuration, the ADM8614-
EVALZ RESET# pin output alternately goes from high
to low and from low to high. The built in LED also
turns from on to off and from off to on. The duration
that the ADM8614-EVALZ RESET# pin is high and
the built in LED is on is equivalent to the watchdog
timeout period. The duration that the ADM8614-
EVALZ RESET# pin is low and the built in LED is off
is equivalent to the reset timeout period.
b. Change the external jumper connection on the
ADM8614-EVALZ WD_DIS pin from ground to
VCC. This configuration disables the watchdog timer.
The ADM8614-EVALZ RESET# pin maintain its
output to high and the built in LED to the on state.
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UG-1767
CC_RESET_THRESH_RISE
and V
CC_RESET_THRESH_RISE CC_RESET_THRESH_FALL