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EVAL-ADM1185EBZ

P1-P3P4-P6P7-P9P10-P12
Quad Voltage Monitor and Sequencer
Evaluation Kit
Preliminary Technical Data
EVAL-ADM1185EBZ
Rev. PrA
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved.
FEATURES
Evaluation kit for the ADM1185 quad voltage monitor and
sequencer
6 LEDs indicate power supply status, providing a clear visual
indication of the power-up sequence
Dedicated power and enable/disable switches
On-board test points allow examination of the ADM1185’s
operation
EVALUATION KIT CONTENTS
ADM1185 main evaluation board
ADM1185 data sheet
EVAL-ADM1185EBZ evaluation kit data sheet
2 ADM1185 samples
GENERAL DESCRIPTION
The EVAL-ADM1185EBZ evaluation kit demonstrates how the
ADM1185 can provide quad voltage monitoring and
sequencing in multiple supply systems.
The ADM1185 monitors four separate voltage rails, turns on
three regulators in a predefined sequence, and generates a
power-good signal when all supplies are operating and stable.
LEDs provide a visual indication of the status of the main
supply voltage, each of the four inputs, and the system power-
good signal (PWRGD).
Four on-board rotary switches allow the user to investigate the
result of altering each of the monitored input voltages. The user
can simulate fault conditions during power up and while the
ADM1185 is in the power-good state.
FUNCTIONAL BLOCK DIAGRAM
ADM1185
VIN1
VIN2
VIN3
VIN4
OUT1
OUT2
OUT3
PWRGD
GND
3.3V IN
2.5V OUT
1.8V OUT
1.5V OUT
S1
S2
J
3
J
1
PWRGD
2.5V OUT
1.8V OUT
1.5V OUT
06720-001
REG1
IN
OUTEN
REG2
IN
OUTEN
REG3
IN
OUTEN
REG0
IN
OUTEN
VCC
Figure 1.
EVAL-ADM1185EBZ Preliminary Technical Data
Rev. PrA | Page 2 of 12
TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Kit Contents................................................................... 1
General Description......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Evaluation Board Hardware............................................................ 3
Connector, Switch, Jumper, LED, and Test Point Functions.........3
Evaluation Board Operation ........................................................... 5
ADM1185 Samples....................................................................... 5
Powering the Evaluation Board.................................................. 5
Setting Voltage-Detection Levels................................................ 5
Theory of Operation.....................................................................5
Simulating a Power-Up Sequence ...............................................5
Observing Fault Conditions During Power On........................5
Observing Fault Conditions Following Power On ...................6
Additional Delays..........................................................................6
Evaluation Board Schematics...........................................................7
Ordering Information.......................................................................9
Bill of Materials..............................................................................9
Ordering Guide .......................................................................... 10
ESD Caution................................................................................ 10
REVISION HISTORY
5/07—Revision PrA: Initial Version
Preliminary Technical Data EVAL-ADM1185EBZ
Rev. PrA | Page 3 of 12
EVALUATION BOARD HARDWARE
CONNECTOR, SWITCH, JUMPER, LED, AND TEST POINT FUNCTIONS
Table 1. Connector Functions
Pin Name Function
J1 Power connector J1-1: Connects the positive terminal of the bench power supply to the board
J1-2: Connects the ground terminal of the bench power supply to the board
J3 Terminal block J3-1: Connects a 9 V power supply to the evaluation board
J3-2: Connects a 9 V power supply to ground
J9 6W_MINIMOLEX Connects to the next board when interconnecting ADM1185 evaluation boards.
J10 6W_MINIMOLEX Connects to the previous board when interconnecting ADM1185 evaluation boards.
Table 2. Switch Functions
Switch Description Position Function
Switched to 5 V supply Connects the 5 V rail to the enable input of Regulator 0 S1
Switch for powering on and off
the board
Switched to ground Grounds the enable input of Regulator 0
Switched to J1 Connects a 9 V power supply to the evaluation board S2
Switch for choosing which
power supply to connect to the
evaluation board
Switched to J3 Connects the bench power supply to the evaluation board
S3-1 connected to S3-8 Connects C2 (10 nF) between the VIN1 pin and ground
S3-2 connected to S3-7 Connects C7 (0.1 μF) between the VIN1 pin and ground
S3-3 connected to S3-6 Connects C8 (1 μF) between the VIN1 pin and ground
S3
Sets the time delay associated
with the 3.3 V input
S3-4 connected to S3-5 Connects C5 and C9 (user defined) between the VIN1 pin and ground
S4-1 connected to S4-8 Connects C12 (10 nF) between the VIN2 pin and ground
S4-2 connected to S4-7 Connects C15 (0.1 μF) between the VIN2 pin and ground
S4-3 connected to S4-6 Connects C17 (1 μF) between the VIN2 pin and ground
S4
Sets the time delay associated
with the 2.5 V input
S4-4 connected to S4-5 Connects C14 and C21 (user defined) between the VIN2 pin and ground
S5-1 connected to S5-8 Connects C23 (10 nF) between the VIN3 pin and ground
S5-2 connected to S5-7 Connects C25 (0.1 μF) between the VIN3 pin and ground
S5-3 connected to S5-6 Connects C27 (1 μF) between the VIN3 pin and ground
S5
Sets the time delay associated
with the 1.8 V input
S5-4 connected to S5-5 Connects C24 and C35 (user defined) between the VIN3 pin and ground
S6-1 connected to S6-8 Connects C28 (10 nF) between the VIN4 pin and ground
S6-2 connected to S6-7 Connects C29 (0.1 μF) between the VIN4 pin and ground
S6-3 connected to S6-6 Connects C30 (1 μF) between the VIN4 pin and ground
S6
Sets the time delay associated
with the 1.5 V input
S6-4 connected to S6-5 Connects C31 and C36 (user defined) between the VIN4 pin and ground
VR1 Rotary switch N/A Reduces the 3.3 V supply level when the switch is turned clockwise
VR2 Rotary switch N/A Reduces the 2.5 V supply level when the switch is turned clockwise
VR3 Rotary switch N/A Reduces the 1.8 V supply level when the switch is turned clockwise
VR4 Rotary switch N/A Reduces the 1.5 V supply level when the switch is turned clockwise
P1-P3P4-P6P7-P9P10-P12

EVAL-ADM1185EBZ

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Manufacturer:
Analog Devices Inc.
Description:
QUAD VOLTAGE MONITOR AND SEQUENCER EVALUATION KIT
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New from this manufacturer.
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