Evaluation Kit for ADM1184 ±0.8% Accurate Quad Voltage Monitor EVAL-ADM1184 The ADM1184 monitors four separate voltage rails. Each rail is adjustable using the on-board rotary switches or dedicated switches, allowing the user to investigate the result of altering each of the monitored input voltages and to simulate fault conditions. FEATURES Evaluation kit for the ADM1184 ±0.8% accurate quad voltage monitor LEDs provide a clear visual indication of device operation Dedicated power and enable/disable switches On-board test points allow examination of ADM1184 operation LEDs provide a visual indication of the status of the main supply voltage, of the four monitored voltage rails, of the four outputs (OUT1 to OUT3), and of the system power-good signal (PWRGD). GENERAL DESCRIPTION The EVAL-ADM1184 evaluation kit demonstrates the operation of the ADM1184 as a quad voltage monitor in a multiple supply system. EVALUATION KIT CONTENTS ADM1184 main evaluation board 2 ADM1184 samples 07766-001 DIGITAL PHOTO OF ADM1184 EVALUATION BOARD Figure 1. Rev. 0 Evaluation boards are only intended for device evaluation and not for production purposes. Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or statutory including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose. No license is granted by implication or otherwise under any patents or other intellectual property by application or use of evaluation boards. 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. Analog Devices reserves the right to change devices or specifications at any time without notice. Trademarks and registered trademarks are the property of their respective owners. Evaluation boards are not authorized to be used in life support devices or systems. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.461.3113 ©2008 Analog Devices, Inc. All rights reserved. EVAL-ADM1184 TABLE OF CONTENTS Features .............................................................................................. 1 Powering the Evaluation Board ..................................................5 General Description ......................................................................... 1 Theory of Operation .....................................................................5 Evaluation Kit Contents ................................................................... 1 Simulating a Power-Up Sequence ...............................................5 Digital Photo Of ADM1184 Evaluation Board............................. 1 Observing Fault Conditions ........................................................5 Revision History ............................................................................... 2 Evaluation Board Schematics...........................................................6 Evaluation Board Hardware ............................................................ 3 Ordering Informations......................................................................8 Connector, Switch, Jumper, LED, and Test Point Functions .. 3 Bill of Materials ..............................................................................8 Evaluation Board Operation ........................................................... 5 Ordering Guide .............................................................................8 ADM1184 Samples ....................................................................... 5 ESD Caution...................................................................................8 REVISION HISTORY 10/08—Revision 0: Initial Version Rev. 0 | Page 2 of 8 EVAL-ADM1184 EVALUATION BOARD HARDWARE CONNECTOR, SWITCH, JUMPER, LED, AND TEST POINT FUNCTIONS Table 1. Connector Functions Pin J1 Name Power connector J3 Terminal block Function J1-1: Connects the positive terminal of the bench power supply to the evaluation board J1-2: Connects the ground terminal of the bench power supply to the evaluation board J3-1: Connects a 9 V power supply to the evaluation board J3-2: Connects a 9 V power supply to ground Table 2. Switch Functions Switch S0 Description Switch for powering board on/off S1 Switch for turning on/off the 3.3 V rail which is monitored by the VIN1 pin S2 Switch for turning on/off the 2.5 V rail which is monitored by the VIN2 pin S3 Switch for turning on/off the 1.8 V rail which is monitored by the VIN3 pin S4 Switch for turning on/off the 1.5 V rail which is monitored by the VIN4 pin VR1 VR2 VR3 VR4 Rotary switch Rotary switch Rotary switch Rotary switch Position 9V VCC On position Off position On position Off position On position Off position On position Off position N/A N/A N/A N/A Function Set to this position when powering the board via J3 Set to this position when powering the board via J1 Enables Regulator U1 Disables Regulator U1 Enables Regulator U2 Disables Regulator U2 Enables Regulator U3 Disables Regulator U3 Enables Regulator U4 Disables Regulator U4 Reduces the 3.3 V supply level when the switch is turned clockwise Reduces the 2.5 V supply level when the switch is turned clockwise Reduces the 1.8 V supply level when the switch is turned clockwise Reduces the 1.5 V supply level when the switch is turned clockwise Table 3. Jumper Functions Jumper J2 J5 J6 J8 J12 Description Connects J1-1 to J3-1 Connects VR2 to the feedback pin of Regulator U2 Connects VR3 to the feedback pin of Regulator U3 Connects VR1 to the feedback pin of Regulator U1 Connects VR4 to the feedback pin of Regulator U4 Default Not inserted Inserted Inserted Inserted Inserted Table 4. LED Functions LED D1 D2 D3 D4 D5 D6 D7 D8 D9 Name VCC 3.3 V (VIN1) 2.5 V (VIN2) 1.8 V (VIN3) 1.5 V (VIN4) OUT1 OUT2 OUT3 PWRGD Function A red LED indicates that the board is powered on A yellow LED indicates the status of the 3.3 V supply voltage A yellow LED indicates the status of the 2.5 V supply voltage A yellow LED indicates the status of the 1.8 V supply voltage A yellow LED indicates the status of the 1.5 V supply voltage A green LED indicates when the OUT1 output is asserted A green LED indicates when the OUT2 output is asserted A green LED indicates when the OUT3 output is asserted A green LED indicates when the PWRGD output is asserted Rev. 0 | Page 3 of 8 EVAL-ADM1184 Table 5. Test Point Functions Test Point 1_5V 1_8V 2_5V 3_3V GND GND1 GND2 GND3 OUT1 OUT2 OUT3 PWRGD VIN1 VIN2 VIN3 VIN4 Function Connected to the 1.5 V rail Connected to the 1.8 V rail Connected to the 2.5 V rail Connected to the 3.3 V rail Connected to ground Connected to ground Connected to ground Connected to ground Connected to the OUT1 pin of the ADM1184 device Connected to the OUT2 pin of the ADM1184 device Connected to the OUT3 pin of the ADM1184 device Connected to the PWRGD pin of the ADM1184 device Connected to VIN1 pin of the ADM1184 device Connected to VIN2 pin of the ADM1184 device Connected to VIN3 pin of the ADM1184 device Connected to VIN4 pin of the ADM1184 device Rev. 0 | Page 4 of 8 EVAL-ADM1184 EVALUATION BOARD OPERATION Two loose ADM1184 samples are included in the evaluation kit. If the board does not have a device soldered in place, place a single sample in the socket labeled U6 before powering on the evaluation board. of the PWRGD output. After PWRGD is asserted, if any of the four monitored supplies drops below its programmed threshold, the corresponding OUTx output and the PWRGD output are deasserted. If the supply monitored by VIN4 drops below it’s programmed threshold, the PWRGD output is only deasserted. POWERING THE EVALUATION BOARD SIMULATING A POWER-UP SEQUENCE There are two methods of powering the EVAL-ADM1184: connect a 9 V power supply through J3 or connect a bench supply through J1. When using a 9 V power supply, be sure to place S2 to the 9 V position; alternatively, when using a bench supply, adjust S2 to the VCC position. Begin with all four rotary positions turned fully counterclockwise. Power on each of the four voltage rails by switching the associated dedicated switch, S1 to S4, to the on position. The rails may be powered on in any order. Yellow LEDs (D2, D3, D4, and D5) provide a visual indication of the status of each of the four voltage rails, while green LEDs (D6, D7, D8, and D9) indicate when the OUT1 to OUT3 outputs and the system PWRGD signal are asserted. The 190 ms delay associated with the assertion of the power-good signal is easily observed. ADM1184 SAMPLES THEORY OF OPERATION Four voltage rails are monitored by the ADM1184. Resistor networks external to the VIN1, VIN2, VIN3, and VIN4 pins set the trip points for the monitored rails, 3.3 V, 2.5 V, 1.8 V, and 1.5 V. OBSERVING FAULT CONDITIONS Output OUT1 to Output OUT3 are solely dependent on their associated input (that is, VIN1, VIN2, or VIN3). Before the voltage on a VINx input reaches 0.6 V, the corresponding output is switched to ground. When VINx detects 0.6 V, OUTx is asserted after a 30 μs delay. Each rotary switch (VR1 to VR4) controls the voltage at each of the VIN1 to VIN4 inputs. As the rotary switch is turned clockwise, the voltage monitored by VINx is reduced. When the voltage at the VINx input pin drops below 0.6 V, OUTx is switched to ground. The PWRGD output is also deasserted immediately. 07766-004 When all four monitored supplies exceed their programmed thresholds a system power good signal (PWRGD) is asserted. There is an internal 190 ms delay associated with the assertion Fault conditions may be investigated by using the four rotary switches, VR1 to VR4. By turning a rotary switch clockwise, the associated input voltage is reduced. Figure 2. ADM1184 Evaluation Board Silkscreen Rev. 0 | Page 5 of 8 EVAL-ADM1184 EVALUATION BOARD SCHEMATICS 07766-002 Figure 3. ADM1184 Evaluation Board Schematic, Page 1 Rev. 0 | Page 6 of 8 EVAL-ADM1184 07766-003 Figure 4. ADM1184 Evaluation Board Schematic, Page 2 Rev. 0 | Page 7 of 8 EVAL-ADM1184 ORDERING INFORMATION BILL OF MATERIALS Table 6. Qty 2 8 4 2 1 4 4 1 5 1 8 21 1 2 1 1 2 1 2 3 2 1 1 1 1 1 1 1 1 1 5 4 16 4 1 1 1 1 Reference Designator C1, C16 C2, C4, C5, C7, C9, C10, C11, C13 C3, C6, C8, C12 C14, C15 D1 D2, D3, D4, D5 D6, D7, D8, D9 J1 J2, J5, J6, J8, J12 J3 Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 R1, R2, R3, R8, R14, R17, R25, R26, R27, R28, R29, R30, R31, R32, R33, R36, R40, R41, R49, R53, R54 R4 R5, R7 R6 R9 R10, R21 R11 R12, R48 R13, R19, R52 R15, R20 R16 R18 R22 R23 R24 R43 R44 R46 R47 S0, S1, S2, S3, S4 VR1, VR2, VR3, VR4 1_5V, 1_8V, 2_5V, 3_3V, GND, GND1, GND2, GND3, OUT1, OUT2, OUT3, PWRGD, VIN1, VIN2, VIN3, VIN4 U1, U2, U3, U4 U5 U6 U7 Part No. 1 FEC 432210 FEC 3188840 FEC 3019366 FEC 9753893 FEC 1021302 FEC 1318247 FEC 1318243 FEC 151789 FEC 1022247 FEC 224959 FEC 1081239 FEC 9332383 162 kΩ, 0805 resistor 36 kΩ, 0805 resistor 115 kΩ, 0805 resistor 76.8 kΩ, 0805 resistor 140 kΩ, 0805 resistor 390 kΩ, 0805 resistor 200 kΩ, 0805 resistor 100 kΩ, 0805 resistor 110 kΩ, 0805 resistor 470 kΩ, 0805 resistor 150 kΩ, 0805 resistor 75 kΩ, 0603 resistor 620 kΩ, 0805 resistor 39 kΩ, 0805 resistor 220 kΩ, 0805 resistor 62 kΩ, 0805 resistor 910 kΩ, 0805 resistor 1.8 kΩ, 0805 resistor SPDT slide switch, SW-SPDT-SLIDE Trimmer potentiometer, 1 M, VRES_ROTARY Testpoint FEC 1160272 FEC 1108905 FEC 1140356 FEC 1141007 FEC 1160268 FEC 9333185 FEC 9332782 FEC 9332405 FEC 9332464 FEC 9333282 FEC 9332626 FEC 9331522 FEC 9333444 FEC 9333177 FEC 9332839 FEC 9333436 FEC 9333657 FEC 9332715 FEC 1123875 FEC 9608290 FEC 8731144 ADP3334ARM adjustable LDO regulator, MS08 ADM1184 quad voltage monitor MS010 10-pin MSOP socket, MS010-SKT 3-terminal 0.1 A positive voltage regulator, TO-92 Free issue by Analog Devices Free issue by Analog Devices Abrel Products 6560102211 FEC 9489444 FEC = Farnell Electronics. ORDERING GUIDE Model EVAL-ADM1184EBZ1 1 Description 0.1 μF, 0603 capacitor 1 μF, 0603 capacitor 470 pF, 0402 capacitor 10 μF, 0603 capacitor 0805 red LED 0805 yellow LED 0805 green LED 2-pin terminal block, connector/power Jumper, SIP-2P DC barrel power connector, connector\barrel NPD SMD transistor, SOT-23 1 kΩ, 0805 resistor ESD CAUTION Description ADM1184 Evaluation Kit Z = RoHS Compliant Part. ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB07766-0-10/08(0) Rev. 0 | Page 8 of 8