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Evaluation Board User Guide
UG-174
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluation Kit for the ADM2914 and the ADM12914
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 12
FEATURES
Input voltage of 8 V to 20 V
6 adjustable input voltages including 2 negative
Full features evaluated on a single board
LED indicated voltage and output status
Configurations can be easily adjusted with bare hands
Development area allows custom add-on circuits
Test points for easy probing
PACKAGE CONTENTS
EVAL-ADM2914EBZ evaluation board
GENERAL DESCRIPTION
The ADM2914/ADM12914 are quad voltage monitoring devices
designed to simultaneously monitor undervoltage and overvoltage
conditions on up to four supply rails. There are four undervoltage
and four overvoltage comparators integrated internally to provide
common
UV
and
OV
output signals. This device integrates the
required comparators and digital gating necessary to achieve single
common
UV
and
OV
reset signals. Each input is compared with a
0.5 V reference. Users can program the monitoring voltage level
through the external voltage dividers.
When monitoring negative supplies, it has a 1 V buffered
reference output that can be used. The tristate SEL pin is used to
configure the polarity of the third and fourth inputs that determine
if they are used for monitoring positive or negative supplies.
The ADM2914 and ADM12914 are available in two models: the
ADM2914-1/ADM12914-1 and the ADM2914-2/ADM12914-2.
• The ADM2914-1/ADM12914-1 offer a latching
OV
output
that can be cleared by toggling the
LATCH
input pin.
• The ADM2914-2/ADM12914-2 have a disable pin that is
used as an override to disable both outputs signals.
An internal shunt regulator enables the ADM2914/ADM12914
devices to be used on higher voltage systems. However, this
requires a resistor to be placed between the main supply rail
and the V
CC
pin to limit the current flow into the V
CC
pin to no
greater than 10 mA.
This evaluation board is designed to fully evaluate the features
of the ADM2914 and the ADM12914, including supply monitoring
for both positive and negative rails, monitoring polarity selection,
timer function, and
LATCH
/DIS functions.
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