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general description the max6974 evaluation kit (ev kit) is an assembled andtested printed circuit board (pcb) that demonstrates the max6974/ max6975 precision current-sinking, 24-output pwm led drivers. the max6974/max6975 functionality can be evaluated using the max6974 ev kit. the max6975 has 14-bit individual pwm and 5-bit global pwm, while the max6974 has 12-bit individual pwm and 7-bit global pwm. the evaluation kit comes with a max6974atl+ installed. the windows 98/2000/xp software supports only the max6974. features ? proven pcb layout ? complete evaluation system ? convenient on-board test points ? fully assembled and tested ? multiplexed 4 x 8 rgb (96 leds total) 20ma ledmatrix evaluates: max6974 max6974 evaluation kit ________________________________________________________________ maxim integrated products 1 19-0519; rev 1; 2/07 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. ordering information part type interface requirements MAX6974EVKIT+ ev kit windows pc with rs-232 serial port designation qty description c1 1 100? 20%, 10v x 5r cap aci tor ( 1812) td k c 4532x 5r1a107m c2, c3 2 100? 20%, 6.3v x 5r cap acitor s ( 1210) td k c 3225x 5r0j107m c4, c5, c25 3 10f 10% , 6.3v x 5r cap aci tor s ( 0603) td k c 1608x 5r0j106k c6?9 4 0.47? 10%, 6.3v x5r cap aci tors ( 0402) td k c 1005x 5r0j474k c10?16 7 0.1? 10%, 6.3v x 5r cap aci tor s ( 0402) td k c 1005x 5r0j104k c17, c18 2 0.001? ?0%, 25v x5r capacitors (0402) td k c 1005x5r1e 102k c19?22 4 120p f 5% , 25v c 0g cap aci tor s ( 0402) td k c 1005c 0g1e 121j c23, c24 2 10p f 5%, 25v c 0g cap aci tor s ( 0402) td k c 1005c 0g1e 100j c26 1 0.01? 10%, 6.3v x 5r cap aci tor ( 0402) td k c 1005x 5r1e 103k d1?32 32 rgb led modulesstanley urgb1308b-10-tf j1 0 not installed j2 1 2 x 5 right-angle receptacle (0.1in) j3 1 2 x 5 right-angle male header (0.1in) j4 0 not installed windows is a registered trademark of microsoft corp. component list designation qty description ju1?u13 13 2-pin headers ju14?u20 7 3-pin headers p1 1 female db9 connector q1?4 4 pnp transistorszetex fmmtl717ta (sot23) r1?8 8 200 ?% resistors (0603) r9?12 4 182 ?% resistors (0603) r13?16 4 562 ?% resistors (0603) r17 1 4.99k ?% resistor (0402) r18 1 9.53k ?% resistor (0402) r19 1 249k ?% resistor (0402) r20 1 267k ?% resistor (0402) tp1?p10 0 not installed u1, u2 2 24-output led driversmaxim max6974atl+ (40-pin tqfn, 6mm x 6mm ep) u3 1 low-power microcontrollermaxim maxq2000-rax+ (68-pin qfn, 10mm x 10mm ep) u4 1 dual lvds line driver maxim max9112eka+ (8-pin sot23) u5 1 dual lvds line receiver maxim max9113eka+ (8-pin sot23) + denotes a lead-free and rohs-compliant ev kit. downloaded from: http:///
evaluates: max6974 quick start required equipment before you begin, you need the following equipment: maxim MAX6974EVKIT dc power supply, 5vdc at 1a windows 98/2000/xp-compatible computer with a serial (com) port 9-pin i/o extension cable procedure do not turn on the power until all connectionsare complete. 1) ensure that all jumpers ju1?u20 are in 1-2 posi- tion (see table 5). 2) connect a 5vdc power source (7vdc maximum) to the board at the vled and gnd terminals. 3) connect a cable from the computer? serial port to the ev kit. if using a 9-pin serial port, use a straight-through, 9-pin female-to-male cable. if the only available serial port uses a 25-pin connector, a standard 25-pin-to-9-pin adapter is required. 4) install the evaluation software on your computer by launching max6974.msi. (the latest software canbe found on maxim? website www.maxim-ic.com.) the program files are copied and icons are created for them in the windows start menu. 5) turn on the power supply. none of the leds light up at this time. 6) start the max6974 program by opening its icon in the start menu. 7) in the select maxim max6974 evaluation kit software mode window, select connect to evkit on port (autodetect) . click ok . see figure 1. verify that the blue m test pattern appears (test_0_blue_m.clr). 8) from the file menu, select load test patterns... and then pick the file test_01_all_white.clr . verify that all 32 rgb leds light up in white. 9) in the led0 color grid, double-click one of the large round color dots in the 4 x 8 grid (or selectone of the dots and click ok ). the standard color selector dialog box appears. select a color andclick ok . click upload all to write the 4 x 8 color grid data to the board. verify that the leds light upin colors corresponding to the software color grid settings. 10) set global intensity to 5/63 and click upload all . verify that the leds are brighter. detailed description of software the max6974 ev kit software controls one or moremax6974 ev kit boards, each of which has two max6974s driving a 4 x 8 grid of leds. max6974 evaluation kit 2 _______________________________________________________________________________________ designation qty description u6 1 rs - 232 tr anscei ver m axi m m ax 3311e u b+ ( 10- p i n ? ax ? ) u7, u8 2 ldo linear regulatorsmaxim max1658esa+ (8-pin so) u9 1 ldo linear regulatormaxim max1659esa+ (8-pin so) component list (continued) designation qty description y1 1 20mhz crystalcitizen hcm49-20.000mabj-ut y2 1 32mhz oscillatorecs ecs-3953m-320-b-tr 1 pcb: max6974 evaluation kit+ 20 shunts component suppliers supplier phone fax website tdk corp. 847-803-6100 847-390-4405 www.component.tdk.com zetex usa 631-543-7100 631-864-7630 www.zetex.com note: indicate that you are using the max6974 when contacting these component suppliers. ?ax is a registered trademark of maxim integrated products, inc. downloaded from: http:///
universal options the cascaded boards control must be set to the num- ber of boards that are connected.when multiplexing is disabled, only the left half of the 4 x 8 grid is driven. see the detailed description of hardware section . clicking the upload control command only button writes the control command to all cascaded max6974s(see figure 2). refer to the max6974/max6975 data sheet commands section, table 15. individual board options the individual board options controls apply to the two max6974s on the selected board. if using a singleev kit board, leave select board set at 1. see the cascading boards section. the board calibration controls determine the peak led current for each group of output ports. becausethe leds used on the ev kit board are only rated for 20ma, setting the calibration controls to a value greater than about 50/255 can exceed the led? rated drive current, causing permanent damage to the led. the 4 x 8 grid of circles inside board led colors cor- responds to the 4 x 8 grid of leds on the ev kit board.these can be individually selected by clicking them with the mouse. the change button chooses the color of the single selected led. clicking the change all button sets all 32 leds to a chosen color. upload all clicking the upload all button writes universal and individual board options to all cascaded max6974s. file-load test patterns pressing the key combination ctrl+t brings up a con- venient window containing a list of test pattern files (see figure 3). all files whose names begin with ?est_? and end with ?clr?are listed as test patterns. click on a filename from the list, and the chroma pattern is immediately loaded. for example, test pattern test_921_ 2boards_all_white.clr loads a master and one slave board with a 4 x 16 pattern where all of the leds are on. the test pattern default.clr is loaded at startup. disabling led multiplexing as shipped from the factory, the 4 x 8 grid of tricolor ledsis multiplexed. to disable multiplexing, and drive only the left 4 x 4 half of the grid, two steps are necessary. first, jumpers ju1?u6 and ju19 and ju20 must be reconfig- ured. see table 5. second, the multiplexing must be set to disabled in universal options . cascading boards two or more max6974 ev kit boards can be connectedtogether in a master-slave configuration, using the mas- ter/slave connectors, j2 and j3. 1) with power off, connect the j3 pins of one board to the j2 socket of the next board. 2) the board on the left is the master. on the master board, set the ju14?u18 shunts to position 1-2.on all other boards, set the ju14?u18 shunts to position 2-3. 3) the board on the right is the last slave. on the last slave board, set the ju10?u13 shunts closed. onall other boards, remove the ju10?u13 shunts. 4) connect 5vdc power to the master board, between the vled and gnd pads. 5) connect a cable from the computer? serial port to the master board. if using a 9-pin serial port, use astraight-through, 9-pin, female-to-male cable. 6) install the evaluation software on your computer by launching max6974.msi. the program files arecopied and icons are created for them in the windows start menu. 7) turn on the power supply. none of the leds light up at this time. 8) start the max6974 program by opening its icon in the windows start menu. 9) in the select maxim max6974 evaluation kit software mode window, select connect to evkit on port (autodetect) . see figure 1. click ok . 10) set the software? cascaded boards to 2 , 3 , 4 , or 5 , depending on the number of boards used. 11) set the software? select board to 1 to work with the master board. 12) in the board 1 led colors grid, double-click one of the large round color dots in the 4 x 8 grid (orselect one of the dots and click ok ). the standard color selector dialog box appears. select a colorand click ok . 13) click upload all to write the 4 x 8 color grid data to the board. verify that the leds light up in colorscorresponding to the software color grid settings. 14) set board 1 global intensity to 5/63 and click upload all . verify that the leds are brighter. 15) set the software? select board to 2 to work with the next board, and repeat the process of settingled colors, global intensity, and upload all. evaluates: max6974 max6974 evaluation kit _______________________________________________________________________________________ 3 downloaded from: http:///
evaluates: max6974 slideshow demo the ev kit software can load a sequence of test pat-terns. from the command menu, select slideshow , then choose a folder containing test pattern files (seefigure 4). the time between patterns can be adjusted between 50ms and 30s. detailed description of hardware the max6974 precision current-sinking, 24-output pwmled drivers (u1, u2) drive a 4 x 8 multiplexed grid of red-green-blue leds in the common-anode configura- tion. common-emitter pnp bjts (q1?4) switch the led supply voltage in the multiplexing configuration. see tables 1 and 2. user-supplied dc power between 5v and 7v, applied between the vled and gnd pads, is regulated by three max1658/max1659 low-dropout linear regulators (u7, u8, and u9) to produce 5v, 3.3v, and 2.5v supply rails. the maxq2000 microcontroller (u3) drives the max9112 lvds level shifter (u4). when ju14?u18 are in the 1-2 position, this microcontroller drives the max6974 led display drivers (u1, u2). a 32mhz crys-tal oscillator (y2) is used to demonstrate optimum pwm frequency by driving the lvds clock signal between command sequences. during command sequences, the maxq2000 bit bangs the lvds clock at 2.8mhz. when used with the software, the max3311 (u6) trans- lates the rs-232 signal levels from the com port (p1) to logic-level signals. resistor-dividers r17/r18 convert the 5v logic output into 3.3v logic. when ju14?u18 are in the 2-3 position, external lvds signals must be applied to connector j2. in this slave configuration, the maxq2000 (u3), max9112 (u4), and max3311 (u6) are not used. led power dissipation peak led current is set by each port? led current cali- bration register. this 8-bit dac allows peak led cur- rent to be reduced to between 20% and 100% of the full-scale rating, 30ma. setting the current calibration register to a value of 0 limits the peak led current to 6ma (20% of 30ma). by writing different values to the red, green, and blue ports?current calibration registers, the display? color balance can be adjusted to compen- sate for led efficacy variations. the evaluation kit is shipped from the factory with an led type (stanley urgb1308b) that has a maximum rat- ing of 20ma forward current or 84mw power dissipation. evaluating the max6975 the max6974 ev kit? software and firmware are onlycapable of driving 12-bit pwm values. if the ev kit were used to drive the max6975s instead, then the two least significant bits of the individual pixel pwm values are not accessible. see tables 3 and 4. max6974 evaluation kit 4 _______________________________________________________________________________________ table 1. led nonmultiplexing ic/port led devices driven colors u1 port r d1 to d8 red u1 port g d1 to d8 green u2 port r d9 to d16 red u2 port g d9 to d16 green u1 port b d1 to d8 blue u2 port b d9 to d16 blue table 2. led multiplexing ic/port led devices driven colors d1 to d8 u1 port r d17 to d24 red d1 to d8 u1 port g d17 to d24 green d9 to d16 u2 port r d25 to d32 red d9 to d16 u2 port g d25 to d32 green d1 to d8 u1 port b d9 to d16 blue d17 to d24 u2 port b d25 to d32 blue table 3. device comparisonnonmultiplexed operation m a x6 9 7 4 m a x6 9 7 5 o per a t i o n 7 b i ts 5 b i ts g l ob al - i ntensi ty contr ol p w m r esol uti on 3 ( r, g , b) 3 ( r, g , b) n um b er of le d cur r ent cal i b r ati on r eg i ster s 8 b i ts 8 b i ts le d cur r ent cal i b r ati on r esol uti on 30m a3 0 m a m axi m um le d d r i ve cur r ent ( le d cur r ent cal i b r ati on = 255) 6m a6 m a le d d r i ve cur r ent ( le d cur r ent cal i b r ati on = 0) 24 24 n um b er of p i xel s 12 b i ts 14 b i ts ind i vi d ual p i xel p w m - i ntensi ty- contr ol r esol uti on downloaded from: http:///
evaluates: max6974 max6974 evaluation kit _______________________________________________________________________________________ 5 table 4. device comparisonmultiplexed operation m a x6 9 7 4 m a x6 9 7 5 o per a t i o n 6 b i ts 4 b i ts g l ob al - i ntensi ty contr ol p w m r esol uti on 3 ( r, g , b) 3 ( r, g , b) n um b er of le d cur r ent cal i b r ati on r eg i ster s 8 b i ts 8 b i ts le d cur r ent cal i b r ati on r esol uti on 30m a3 0 m a m axi m um le d d r i ve cur r ent ( le d cur r ent cal i b r ati on = 255) 6m a6 m a le d d r i ve cur r ent ( le d cur r ent cal i b r ati on = 0) 48 48 n um b er of p i xel s 12 b i ts 14 b i ts ind i vi d ual p i xel p w m - i ntensi ty- contr ol r esol uti on table 5. jumper functions table jumper pins function closed* enables led multiplexing. ju1 open disables led multiplexing. closed* enables led multiplexing. ju2 open disables led multiplexing. closed* enables led multiplexing. ju3 open disables led multiplexing. closed* enables led multiplexing. ju4 open disables led multiplexing. closed* enables led multiplexing. ju5 open disables led multiplexing. closed* enables led multiplexing. ju6 open disables led multiplexing. closed* normal operation. ju7 open force led d1 red open fault condition. closed* normal operation. ju8 open force led d1 green open fault condition. closed* normal operation. ju9 open force led d1 blue open fault condition. * default jumper setting. downloaded from: http:///
evaluates: max6974 max6974 evaluation kit 6 _______________________________________________________________________________________ table 5. jumper functions table (continued) jumper pins function closed* single board mode: r9 terminates clko; nothing connects to j3. ju10 open no clko termination, allowing slave board to connect to j3. closed* single board mode: r9 terminates clko; nothing connects to j3. ju11 open no clko termination, allowing slave board to connect to j3. closed* single board mode: r10 terminates dout; nothing connects to j3. ju12 open no dout termination, allowing slave board to connect to j3. closed* single board mode: r10 terminates dout; nothing connects to j3. ju13 open no dout termination, allowing slave board to connect to j3. 1-2* master mode; nothing connects to j2. 2-3 slave mode; driven by another max6974 ev kit connected to j2. ju14 open not valid. do not use. 1-2* master mode; nothing connects to j2. 2-3 slave mode; driven by another max6974 ev kit connected to j2. ju15 open not valid. do not use. 1-2* master mode; nothing connects to j2. 2-3 slave mode; driven by another max6974 ev kit connected to j2. ju16 open not valid. do not use. 1-2* master mode; nothing connects to j2. 2-3 slave mode; driven by another max6974 ev kit connected to j2. ju17 open not valid. do not use. 1-2* master mode; nothing connects to j2. 2-3 slave mode; driven by another max6974 ev kit connected to j2. ju18 open not valid. do not use. 1-2* enables led multiplexing. 2-3 disables led multiplexing. ju19 open not valid. do not use. 1-2* enables led multiplexing. 2-3 disables led multiplexing. ju20 open not valid. do not use. * default jumper setting. downloaded from: http:///
evaluates: max6974 max6974 evaluation kit _______________________________________________________________________________________ 7 figure 1. select maxim max6974 ev kit software modescreenshot figure 2. max6974 ev kit?onnected to com1 main windowscreenshot figure 3. click to upload color test pattern screenshot figure 4. slideshow screenshot downloaded from: http:///
evaluates: max6974 max6974 evaluation kit 8 _______________________________________________________________________________________ figure 5a. max6974 ev kit schematic (sheet 1 of 5) 2 vled inin out 1 set 76 5 in 3 4 8 out max1658 u7 shdn +3.3v c2100 f +3.3v gnd vled 2 vled inin out 1 set 76 5 in 3 4 8 out max1659 u9 shdn +5v c2510 f +5v gnd vled vled 2 inin out 1 set 76 5 in 3 4 8 out max1658 u8 shdn +2.5v c3100 f gnd vled +2.5v r20267k 1% r19249k 1% vled c1100 f vled 5.55v gnd *pin 31 of max6974 should be routed to ground separately. max6974 u1 exposed paddle to gnd loado 25 b7_a 32 b7 b3_a 36 b3 b4_a 35 b4 b6_a 33 b6 b5_a 34 b5 b2_a 37 b2 b1_a 38 b1 b0_a 39 b0 r4_a 12 r4 g3_a 19 g3 g2_a g4_a 20 g4 18 g2 g1_a 17 g1 g0_a 16 g0 r7_a 15 r7 r6_a 14 r6 r5_a r3_a 11 r3 13 r5 *31 gnd clko+ 29 clko- 28 r5200 1% dout+ 27 dout- 26 r6200 1% v dd 24 +3.3v c60.47 f gnd 7 clki+ 2 clki+ 1 mux0_a din+ 4 din+ 3 clki- clki- loadi 6 loadi 5 din- din- r2 10 r2_a 9 r1 r1_a 8 r0 r0_a 30 mux1 mux0 mux1_a 22 g6 g6_a 21 g5 g5_a 23 g7 g7_a +3.3v 40 v dd c70.47 f c4 10 f max6974 u2 exposed paddle to gnd loado 25 b7_b 32 b7 b3_b 36 b3 b4_b 35 b4 b6_b 33 b6 b5_b 34 b5 b2_b 37 b2 b1_b 38 b1 b0_b 39 b0 r4_b 12 r4 g3_b 19 g3 g2_b g4_b 20 g4 18 g2 g1_b 17 g1 g0_b 16 g0 r7_b 15 r7 r6_b 14 r6 r5_b r3_b 11 r3 13 r5 *31 gnd clko+ 29 clko- 28 dout+ 27 dout- 26 v dd 24 +3.3v c80.47 f gnd 7 clki+ 2 1 mux0_b din+ 4 3 clki- loadi 6 5 din- r2 10 r2_b 9 r1 r1_b 8 r0 r0_b 30 mux1 mux0 mux1_b 22 g6 g6_b 21 g5 g5_b 23 g7 g7_b +3.3v 40 v dd c90.47 f c5 10 f clko- tp7 dout+ tp8 clko+ tp6 dout- tp9 loado tp10 clko- dout+ dout- clko+ 4 3 out1 1 gnd max9113 u5 out2 dout clko 2 v cc +3.3v c170.001 f c10 0.1 f ju12 ju13 in2- 5 in2+ 6 r8200 1% j3-5 j3-6 j3-8 j3-7 j3-3 j3-1 j3 j3-4 j3-2 j3-10 j3-9 vled vled loado n.c. ju11 ju10 in1- 8 in1+ 7 r7200 1% downloaded from: http:///
evaluates: max6974 max6974 evaluation kit _______________________________________________________________________________________ 9 figure 5b. max6974 ev kit schematic (sheet 2 of 5) seg11 1 seg12 2 seg13 3 seg14 4 seg15 5 seg16 6 seg17 7 seg18 8 seg19 9 seg20 10 seg21 11 seg22 12 seg23 13 seg24 14 seg25 15 seg26 16 seg27 17 t0 48 t0b 47 v dd 49 hfxin 51 t2 46 t2b 45 t1 44 t1b 43 gnd 42 miso 41 sclk 40 mosi 39 32kout 35 38 tx1 37 rx1 36 osc_en seg10 seg9seg8 seg7seg6 seg5 seg4 seg3seg2 seg1 seg0 v adj v lcd2 v lcd1 v lcd rxo 19 20 21 22 23 24 25 26 29 30 31 32 33 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 txo 52 seg29 seg30 seg31seg32 seg33 seg34 seg35 com0 27 28 v ddio gndtck 34 32kin tditms tdo 50 hfxout y1 c23 10pf c24 10pf ss reset c120.1 f +2.5v u3 maxq2000 exposed paddle unconnected seg28 18 +3.3v c130.1 f j1-7 j1-8 j1-2 j1-9 j1-5 j1-3 j1 j1-6 j1-4 j1-10 j1-1 +3.3v n.c. n.c. txo rxo clko dout loado +5v 4 1 v cc c1- c1+ max3311 u6 tin txo 5 rout rxo 3 29 c15 0.1 f c14 0.1 f rin 6 tout 7 gnd 10 shdn r17 4.99k 1% r18 9.53k 1% v- 8 c16 0.1 f p1-3 p1-8 p1-4 p1-2 p1-1 p1 p1-7 p1-6 n.c. p1-9 n.c. n.c. n.c. n.c. p1-5 n.c. j2-6 j2-5 j2-7j2-9 j2-8 j2-4 j2-2 j2 j2-3 j2-1 j2-10 vled vled 3 1 din1 4 gnd max9112 u4 din2 2 v cc c11 0.1 f c180.001 f do2- 5 do2+ 6 r4200 1% do1- 8 do1+ 7 r3200 1% 23 1 tri gnd out osc_en vcc 4 +3.3v +3.3v c260.01 f y2 1 2 3 ju15 1 2 3 ju17 1 2 3 ju18 din- 1 2 3 ju16 clki+ 1 2 3 ju14 loadi r1200 1% clki- clki+ tp1 tp3 tp2 r2200 1% din+ tp4 tp5 n.c. din- downloaded from: http:///
evaluates: max6974 max6974 evaluation kit 10 ______________________________________________________________________________________ figure 5c. max6974 ev kit schematic (sheet 3 of 5) d19-a pr2_a pvmux1_a d19-b pg2_a pvmux1_a d19-c pb2_a pvmux1_a d20-a pr3_a pvmux1_a d20-b pg3_a pvmux1_a d20-c pb3_a pvmux1_a d21-a pr4_a pvmux1_a d21-b pg4_a pvmux1_a d21-c pb4_a pvmux1_a d22-a pr5_a pvmux1_a d22-b pg5_a pvmux1_a d22-c pb5_a pvmux1_a d23-a pr6_a pvmux1_a d23-b pg6_a pvmux1_a d23-c pb6_a pvmux1_a d24-a pr7_a pvmux1_a d24-b pg7_a pvmux1_a d24-c pb7_a pvmux1_a d25-a pr0_b pvmux1_b d25-b pg0_b pvmux1_b d25-c pb0_b pvmux1_b d26-a pr1_b pvmux1_b d26-b pg1_b pvmux1_b d26-c pb1_b pvmux1_b d27-a pr2_b pvmux1_b d27-b pg2_b pvmux1_b d27-c pb2_b pvmux1_b d13-a pr4_b pvmux0_b d13-b pg4_b pvmux0_b d13-c pb4_b pvmux0_b d14-a pr5_b pvmux0_b d14-b pg5_b pvmux0_b d14-c pb5_b pvmux0_b d15-a pr6_b pvmux0_b d15-b pg6_b pvmux0_b d15-c pb6_b pvmux0_b d16-a pr7_b pvmux0_b d16-b pg7_b pvmux0_b d16-c pb7_b pvmux0_b d17-a pr0_a pvmux1_a d17-b pg0_a pvmux1_a d17-c pb0_a pvmux1_a d18-a pr1_a pvmux1_a d18-b pg1_a pvmux1_a d18-c pb1_a pvmux1_a d7-a pr6_a pvmux0_a d7-b pg6_b pvmux0_a d7-c pb6_a pvmux0_a d8-a pr7_a pvmux0_a d8-b pg7_a pvmux0_a d8-c pb7_a pvmux0_a d9-a pr0_b pvmux0_b d9-b pg0_b pvmux0_b d9-c pb0_b pvmux0_b d10-a pr1_b pvmux0_b d10-b pg1_b pvmux0_b d10-c pb1_b pvmux0_b d11-a pr2_b pvmux0_b d11-b pg2_b pvmux0_b d11-c pb2_b pvmux0_b d12-a pr3_b pvmux0_b d12-b pg3_b pvmux0_b d12-c pb3_b pvmux0_b d2-a pr1_a pvmux0_a d2-b pg1_a pvmux0_a d2-c pb1_a pvmux0_a d3-a pr2_a pvmux0_a d3-b pg2_a pvmux0_a d3-c pb2_a pvmux0_a d4-a pr3_a pvmux0_a d4-b pg3_a pvmux0_a d4-c pb3_a pvmux0_a d5-a pr4_a pvmux0_a d5-b pg4_a pvmux0_a d5-c pb4_a pvmux0_a d6-a pr5_a pvmux0_a d6-b pg5_a pvmux0_a d6-c pb5_a pvmux0_a d1-a pr0_a ju7 pvmux0_a d1-c pb0_a ju9 pvmux0_a d1-b pg0_a ju8 pvmux0_a downloaded from: http:///
evaluates: max6974 max6974 evaluation kit ______________________________________________________________________________________ 11 figure 5d. max6974 ev kit schematic (sheet 4 of 5) d28-a pr3_b pvmux1_b d28-b pg3_b pvmux1_b d28-c pb3_b pvmux1_b d29-a pr4_b pvmux1_b d29-b pg4_b pvmux1_b d29-c pb4_b pvmux1_b d30-a pr5_b pvmux1_b d30-b pg5_b pvmux1_b d30-c pb5_b pvmux1_b d31-a pr6_b pvmux1_b d31-b pg6_b pvmux1_b d31-c pb6_b pvmux1_b d32-a pr7_b pvmux1_b d32-b pg7_b pvmux1_b d32-c pb7_b pvmux1_b 1 2 3 ju19 r9 182 1% 23 1 q1 vmuxo_a ju1 r13562 1% muxo_a c19120pf 1 2 3 ju20 r10 182 1% 23 1 q2 vmuxo_b ju2 r14562 1% muxo_b c20120pf ju5 r11 182 1% 23 1 q3 vmux1_a ju3 r15562 1% mux1_a c21120pf ju6 r12 182 1% 23 1 q4 vmux1_b ju4 r16562 1% mux1_b c22120pf vled downloaded from: http:///
evaluates: max6974 max6974 evaluation kit 12 ______________________________________________________________________________________ figure 5e. max6974 ev kit schematic (sheet 5 of 5) j4-11 j4-13 j4-9 j4-7 j4 j4-8 j4-16 j4-14 j4-12 j4-10 j4-15 j4-5 j4-6 j4-3 j4-1 j4-4 j4-2 j4-27 j4-29 j4-25 j4-23 j4-32 j4-18j4-20 j4-22 j4-24 j4-26 j4-28 j4-30 j4-31 r7_a r4_a r3_a r5_a r6_a pr3_apr4_a pr5_a pr6_a j4-21 j4-19 j4-17 r1_a r0_a r2_a pro_apr1_a pr2_a pr7_a j4-43 j4-45 j4-41 j4-39 j4-48 j4-34j4-36 j4-38 j4-40 j4-42 j4-44 j4-46 j4-47 g7_a g4_a g3_a g5_a g6_a pg3_apg4_a pg5_a pg6_a j4-37 j4-35 j4-33 g1_a g0_a g2_a pgo_apg1_a pg2_a pg7_a (odd pins connect to even pins on top of pcb) vmux0_avmux0_b vmux1_a vmux1_b pvmux0_apvmux0_b pvmux1_a pvmux1_b j4 j4-59 j4-61 j4-57 j4-55 j4-64 j4-50j4-52 j4-54 j4-56 j4-58 j4-60 j4-62 j4-63 b7_a b4_a b3_a b5_a b6_a pb3_apb4_a pb5_a pb6_a j4-53 j4-51 j4-49 b1_a b0_a b2_a pbo_apb1_a pb2_a pb7_a j4-75 j4-77 j4-73 j4-71 j4-80 j4-66j4-68 j4-70 j4-72 j4-74 j4-76 j4-78 j4-79 r7_b r4_b r3_b r5_b r6_b pr3_bpr4_b pr5_b pr6_b j4-69 j4-67 j4-65 r1_b r0_b r2_b pro_bpr1_b pr2_b pr7_b (odd pins connect to even pins on top of pcb) j4 j4-91 j4-93 j4-89 j4-87 j4-96 j4-82j4-84 j4-86 j4-88 j4-90 j4-92 j4-94 j4-95 g7_b g4_b g3_b g5_b g6_b pg3_bpg4_b pg5_b pg6_b j4-85 j4-83 j4-81 g1_b g0_b g2_b pgo_bpg1_b pg2_b pg7_b j4-107 j4-109 j4-105 j4-103 j4-112 j4-98 j4-100j4-102 j4-104 j4-106 j4-108 j4-110 j4-111 b7_b b4_b b3_b b5_b b6_b pb3_bpb4_b pb5_b pb6_b j4-101 j4-99 j4-97 b1_b b0_b b2_b pbo_bpb1_b pb2_b pb7_b (odd pins connect to even pins on top of pcb) downloaded from: http:///
evaluates: max6974 max6974 evaluation kit ______________________________________________________________________________________ 13 figure 6. max6974 ev kit component placement guide?omponent side downloaded from: http:///
evaluates: max6974 max6974 evaluation kit 14 ______________________________________________________________________________________ figure 7. max6974 ev kit pcb layout?omponent side downloaded from: http:///
evaluates: max6974 max6974 evaluation kit ______________________________________________________________________________________ 15 figure 8. max6974 ev kit pcb layout?round layer 2 downloaded from: http:///
evaluates: max6974 max6974 evaluation kit 16 ______________________________________________________________________________________ figure 9. max6974 ev kit pcb layout?ignal layer 3 downloaded from: http:///
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 17 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. evaluates: max6974 max6974 evaluation kit figure 10. max6974 ev kit pcb layout?older side springer revision history pages changed at rev 1: 1, 2, 8?2, 14?7 downloaded from: http:///

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