evaluation kit for adm1184 0.8% accurate quad voltage monitor eval-adm1184 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. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2008 analog devices, inc. all rights reserved. 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 general description the eval-adm1184 evaluation kit demonstrates the operation of the adm1184 as a quad voltage monitor in a multiple supply system. 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. 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). evaluation kit contents adm1184 main evaluation board 2 adm1184 samples digital photo of adm1184 evaluation board 07766-001 figure 1.
eval-adm1184 rev. 0 | page 2 of 8 table of contents features .............................................................................................. 1 general description ......................................................................... 1 evaluation kit contents ................................................................... 1 digital photo of adm1184 evaluation board ............................. 1 revision history ............................................................................... 2 evaluation board hardware ............................................................ 3 connector, switch, jumper, led, and test point functions .. 3 evaluation board operation ........................................................... 5 adm1184 samples ....................................................................... 5 powering the evaluation board ..................................................5 theory of operation .....................................................................5 simulating a power-up sequence ...............................................5 observing fault conditions ........................................................5 evaluation board schematics ...........................................................6 ordering informations . .....................................................................8 bill of materials ..............................................................................8 ordering guide .............................................................................8 esd caution...................................................................................8 revision history 10/08revision 0: initial version
eval-adm1184 rev. 0 | page 3 of 8 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 evaluation board j1-2: connects the ground terminal of the bench power supply to the evaluation 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 table 2. switch functions switch description position function s0 switch for powering board on/off 9 v set to this position when powering the board via j3 v cc set to this position when powering the board via j1 s1 switch for turning on/off the 3.3 v rail which is monitored by the vin1 pin on position enables regulator u1 off position disables regulator u1 s2 switch for turning on/off the 2.5 v rail which is monitored by the vin2 pin on position enables regulator u2 off position disables regulator u2 s3 switch for turning on/off the 1.8 v rail which is monitored by the vin3 pin on position enables regulator u3 off position disables regulator u3 s4 switch for turning on/off the 1.5 v rail which is monitored by the vin4 pin on position enables regulator u4 off position disables regulator u4 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 table 3. jumper functions jumper description default j2 connects j1-1 to j3-1 not inserted j5 connects vr2 to the feedback pin of regulator u2 inserted j6 connects vr3 to the feedback pin of regulator u3 inserted j8 connects vr1 to the feedback pin of regulator u1 inserted j12 connects vr4 to the feedback pin of regulator u4 inserted table 4. led functions led name function d1 vcc a red led indicates that the board is powered on d2 3.3 v (vin1) a yellow led indicates the status of the 3.3 v supply voltage d3 2.5 v (vin2) a yellow led indicates the status of the 2.5 v supply voltage d4 1.8 v (vin3) a yellow led indicates the status of the 1.8 v supply voltage d5 1.5 v (vin4) a yellow led indicates the status of the 1.5 v supply voltage d6 out1 a green led indicates when the out1 output is asserted d7 out2 a green led indicates when the out2 output is asserted d8 out3 a green led indicates when the out3 output is asserted d9 pwrgd a green led indicates when the pwrgd output is asserted
eval-adm1184 rev. 0 | page 4 of 8 table 5. test point functions test point function 1_5v connected to the 1.5 v rail 1_8v connected to the 1.8 v rail 2_5v connected to the 2.5 v rail 3_3v connected to the 3.3 v rail gnd connected to ground gnd1 connected to ground gnd2 connected to ground gnd3 connected to ground out1 connected to the out1 pin of the adm1184 device out2 connected to the out2 pin of the adm1184 device out3 connected to the out3 pin of the adm1184 device pwrgd connected to the pwrgd pin of the adm1184 device vin1 connected to vin1 pin of the adm1184 device vin2 connected to vin2 pin of the adm1184 device vin3 connected to vin3 pin of the adm1184 device vin4 connected to vin4 pin of the adm1184 device
eval-adm1184 rev. 0 | page 5 of 8 evaluation board operation adm1184 samples 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. powering the evaluation board 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 v cc position. 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. 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 s delay. 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 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 its programmed threshold, the pwrgd output is only deasserted. simulating a power-up sequence begin with all four rotary positions turned fully counter- clockwise. 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. observing fault conditions 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. 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 figure 2. adm1184 evaluation board silkscreen
eval-adm1184 rev. 0 | page 6 of 8 evaluation board schematics 07766-002 figure 3. adm1184 evaluation board schematic, page 1
eval-adm1184 rev. 0 | page 7 of 8 0 7766-003 figure 4. adm1184 evaluation board schematic, page 2
eval-adm1184 ordering information bill of materials table 6. qty reference designator description part no. 1 2 c1, c16 0.1 f, 0603 capacitor fec 432210 8 c2, c4, c5, c7, c9, c10, c11, c13 1 f, 0603 capacitor fec 3188840 4 c3, c6, c8, c12 470 pf, 0402 capacitor fec 3019366 2 c14, c15 10 f, 0603 capacitor fec 9753893 1 d1 0805 red led fec 1021302 4 d2, d3, d4, d5 0805 yellow led fec 1318247 4 d6, d7, d8, d9 0805 green led fec 1318243 1 j1 2-pin terminal block, connector/power fec 151789 5 j2, j5, j6, j8, j12 jumper, sip-2p fec 1022247 1 j3 dc barrel power connector, connector\barrel fec 224959 8 q1, q2, q3, q4, q5, q6 , q7, q8 npd smd transistor, sot-23 fec 1081239 21 r1, r2, r3, r8, r14, r17, r25, r26, r27, r28, r29, r30, r31, r32, r33, r36, r40, r41, r49, r53, r54 1 k, 0805 resistor fec 9332383 1 r4 162 k, 0805 resistor fec 1160272 2 r5, r7 36 k, 0805 resistor fec 1108905 1 r6 115 k, 0805 resistor fec 1140356 1 r9 76.8 k, 0805 resistor fec 1141007 2 r10, r21 140 k, 0805 resistor fec 1160268 1 r11 390 k, 0805 resistor fec 9333185 2 r12, r48 200 k, 0805 resistor fec 9332782 3 r13, r19, r52 100 k, 0805 resistor fec 9332405 2 r15, r20 110 k, 0805 resistor fec 9332464 1 r16 470 k, 0805 resistor fec 9333282 1 r18 150 k, 0805 resistor fec 9332626 1 r22 75 k, 0603 resistor fec 9331522 1 r23 620 k, 0805 resistor fec 9333444 1 r24 39 k, 0805 resistor fec 9333177 1 r43 220 k, 0805 resistor fec 9332839 1 r44 62 k, 0805 resistor fec 9333436 1 r46 910 k, 0805 resistor fec 9333657 1 r47 1.8 k, 0805 resistor fec 9332715 5 s0, s1, s2, s3, s4 spdt slide switch, sw-spdt-slide fec 1123875 4 vr1, vr2, vr3, vr4 trimmer potent iometer, 1 m, vres_rotary fec 9608290 16 1_5v, 1_8v, 2_5v, 3_3v, gnd, gnd1, gnd2, gnd3, out1, out2, out3, pwrgd, vin1, vin2, vin3, vin4 testpoint fec 8731144 4 u1, u2, u3, u4 adp3334arm adjustable ldo regulator, ms08 free issue by analog devices 1 u5 adm1184 quad voltage monitor ms010 free issue by analog devices 1 u6 10-pin msop socket, ms010- skt abrel products 6560102211 1 u7 3-terminal 0.1 a positive vo ltage regulator, to-92 fec 9489444 1 fec = farnell electronics. ordering guide esd caution model description EVAL-ADM1184EBZ 1 adm1184 evaluation kit 1 z = rohs compliant part. ?2008 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. eb07766-0-10/08(0) rev. 0 | page 8 of 8
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