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General Description The MAX6972 evaluation kit (EV kit) is an assembled and tested circuit board that demonstrates the MAX6972/ MAX6973 precision current-sinking, 16-output PWM LED drivers. The MAX6972/MAX6973 functionality can be evaluated using the MAX6972 EV kit. The MAX6973 has 14-bit individual PWM and 5-bit global PWM, while the MAX6972 has 12-bit individual PWM and 7-bit global PWM. The evaluation kit comes with a MAX6972ATJ+ installed. The Windows ® 98/2000/XP software supports only the MAX6972. Features Proven PC Board Layout Complete Evaluation System Convenient On-Board Test Points Fully Assembled and Tested Multiplexed 4 x 8 RGB (96 LEDs Total) 20mA LED Matrix Evaluates: MAX6972 MAX6972 Evaluation Kit ________________________________________________________________ Maxim Integrated Products 1 19-0520; Rev 0; 4/06 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Ordering Information PART TYPE INTERFACE REQUIREMENTS MAX6972EVKIT EV kit Windows PC with RS-232 serial port DESIGNATION QTY DESCRIPTION C1 1 100μF ±20%, 10V X5R capaci tor (1812) TDK C4532X5R1A107M C2 1 100μF ±20%, 6.3V X5R capacitor (1210) TDK C3225X5R0J107M C3–C6, C30 5 10μF ±10%, 6.3V X5R capaci tors (0603) TDK C1608X5R0J106K C7–C12 6 0.47μF ±10%, 6.3V X5R capaci tors (0402) TDK C1005X5R0J474K C13–C19 7 0.1μF ±10%, 6.3V X5R capacitors (0402) TDK C1005X5R0J104K C20, C21 2 0.001μF ±10%, 25V X5R capacitors (0402) TDK C1005X5R1E102K C22–C27 6 120pF ±5%, 25V C0G capaci tors (0402) TDK C1005C0G1E121J C28, C29 2 10pF ±5%, 25V C0G capaci tors (0402) TDK C1005C0G1E100J C31 1 0.01μF ±10%, 6.3V X5R capaci tor (0402) TDK C1005X5R1E103K D1–D32 32 RGB LED modules Stanley URGB1308B 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–JU13, JU22, JU23, JU24 16 2-pin headers JU14–JU21 8 3-pin headers P1 1 Female DB9 connector Q1–Q6 6 pnp transistors Zetex FMMTL717 (SOT23) R1–R10 10 200Ω ±1% resistors (0603) R11–R16 6 182Ω ±1% resistors (0603) R17–R22 6 562Ω ±1% resistors (0603) R23 1 4.99kΩ ±1% resistor (0402) R24 1 9.53kΩ ±1% resistor (0402) R25 1 267kΩ ±1% resistor (0402) R26 1 249kΩ ±1% resistor (0402) TP1–TP10 0 Not installed U1, U2, U3 3 16-output LED drivers Maxim MAX6972ATJ+ (32-pin TQFN, 5mm x 5mm EP) U4 1 Low-power microcontroller Maxim MAXQ2000-RAX (68-pin QFN, 10mm x 10mm EP) U5 1 Dual LVDS line driver Maxim MAX9112EKA (8-pin SOT23)

MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630 ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

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Page 1: MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630  ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

General DescriptionThe MAX6972 evaluation kit (EV kit) is an assembled andtested circuit board that demonstrates the MAX6972/MAX6973 precision current-sinking, 16-output PWM LEDdrivers. The MAX6972/MAX6973 functionality can beevaluated using the MAX6972 EV kit. The MAX6973 has14-bit individual PWM and 5-bit global PWM, while theMAX6972 has 12-bit individual PWM and 7-bit globalPWM. The evaluation kit comes with a MAX6972ATJ+installed. The Windows® 98/2000/XP software supportsonly the MAX6972.

Features♦ Proven PC Board Layout

♦ Complete Evaluation System

♦ Convenient On-Board Test Points

♦ Fully Assembled and Tested

♦ Multiplexed 4 x 8 RGB (96 LEDs Total) 20mA LEDMatrix

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MAX6972 Evaluation Kit

________________________________________________________________ Maxim Integrated Products 1

19-0520; Rev 0; 4/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering InformationPART TYPE INTERFACE REQUIREMENTS

MAX6972EVKIT EV kit Windows PC with RS-232 serial port

DESIGNATION QTY DESCRIPTION

C1 1100µF ± 20%, 10V X 5R cap aci tor ( 1812) TD K C 4532X 5R1A107M

C2 1100µF ± 20%, 6.3V X 5R cap aci tor ( 1210) TD K C 3225X 5R0J107M

C3–C6, C30 510µF ± 10% , 6.3V X 5R cap aci tor s ( 0603) TD K C 1608X 5R0J106K

C7–C12 60.47µF ± 10%, 6.3V X5R cap aci tors ( 0402)TD K C 1005X 5R0J474K

C13–C19 70.1µF ± 10%, 6.3V X 5R cap aci tor s ( 0402) TD K C 1005X 5R0J104K

C20, C21 20.001µF ±10%, 25V X5R capacitors (0402)TD K C 1005X5R1E 102K

C22–C27 6120p F ± 5% , 25V C 0G cap aci tor s ( 0402) TD K C 1005C 0G1E 121J

C28, C29 210p F ± 5%, 25V C 0G cap aci tor s ( 0402) TD K C 1005C 0G1E 100J

C31 10.01µF ± 10%, 6.3V X 5R cap aci tor ( 0402) TD K C 1005X 5R1E 103K

D1–D32 32RGB LED modulesStanley URGB1308B

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 ListDESIGNATION QTY DESCRIPTION

JU1–JU13,JU22, JU23,

JU2416 2-pin headers

JU14–JU21 8 3-pin headers

P1 1 Female DB9 connector

Q1–Q6 6pnp transistorsZetex FMMTL717 (SOT23)

R1–R10 10 200Ω ±1% resistors (0603)

R11–R16 6 182Ω ±1% resistors (0603)

R17–R22 6 562Ω ±1% resistors (0603)

R23 1 4.99kΩ ±1% resistor (0402)

R24 1 9.53kΩ ±1% resistor (0402)

R25 1 267kΩ ±1% resistor (0402)

R26 1 249kΩ ±1% resistor (0402)

TP1–TP10 0 Not installed

U1, U2, U3 316-output LED driversMaxim MAX6972ATJ+(32-pin TQFN, 5mm x 5mm EP)

U4 1Low-power microcontrollerMaxim MAXQ2000-RAX(68-pin QFN, 10mm x 10mm EP)

U5 1Dual LVDS line driverMaxim MAX9112EKA (8-pin SOT23)

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Quick StartRequired Equipment

Before you begin, you need the following equipment:

• Maxim MAX6972EVKIT

• DC power supply, 5VDC at 1A

• Windows 98/2000/XP-compatible computer with aserial (COM) port

• 9-pin I/O extension cable

ProcedureDo not turn on the power until all connectionsare complete.

1) Ensure that all jumpers JU1–JU24 are in 1-2 posi-tion (see Table 5).

2) Connect a 5VDC power source (7VDC maximum) tothe board at the VLED and GND terminals.

3) Connect a cable from the computer’s serial port tothe EV kit. If using a 9-pin serial port, use a straight-through, 9-pin female-to-male cable. If the onlyavailable serial port uses a 25-pin connector, astandard 25-pin-to-9-pin adapter is required.

4) Install the evaluation software on your computer bylaunching MAX6972.msi. (The latest software canbe found on Maxim’s website www.maxim-ic.com.)The program files are copied and icons are createdfor them in the Windows Start menu.

5) Turn on the power supply. None of the LEDs lightup at this time.

6) Start the MAX6972 program by opening its icon inthe Start menu.

7) In the Select Maxim MAX6972 Evaluation KitSoftware Mode window, select Connect to EVKit onport (Autodetect). Click OK. See Figure 1. Verify thatthe 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. Verifythat all 32 RGB LEDs light up in white.

9) In the LED0 color grid, double-click one of thelarge round color dots in the 4 x 8 grid (or selectone of the dots and click OK). The standard colorselector dialog box appears. Select a color andclick OK. Click Upload All to write the 4 x 8 colorgrid data to the board. Verify that the LEDs light upin colors corresponding to the software color gridsettings.

10) Set Global Intensity to 5/63 and click Upload All.Verify that the LEDs are brighter.

Detailed Description of SoftwareThe MAX6972 EV kit software controls one or moreMAX6972 EV kit boards, each of which has threeMAX6972s driving a 4 x 8 grid of LEDs.

MAX6972 Evaluation Kit

2 _______________________________________________________________________________________

DESIGNATION QTY DESCRIPTION

U6 1Dual LVDS line receiverMaxim MAX9113EKA (8-pin SOT23)

U7 1RS-232 transceiverMaxim MAX3311EUB (10-pin µMAX®)

U8, U9 2LDO linear regulatorsMaxim MAX1658ESA (8-pin SO)

U10 1LDO linear regulatorMaxim MAX1659ESA (8-pin SO)

Component List (continued)DESIGNATION QTY DESCRIPTION

Y1 120MHz crystalCitizen HCM49-20.000MABJ

Y2 132MHz oscillatorECS ECS-3953M-320-B-TR

— 1 MAX6972 EV kit PC board

— 24 Shunts

Component Suppliers

SUPPLIER PHONE FAX WEBSITE

TDK 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 MAX6972 when contacting these component suppliers.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

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Universal OptionsThe Cascaded Boards control must be set to the num-ber of boards that are connected.

When Multiplexing is disabled, only the left half of the4 x 8 grid is driven. See the Detailed Description ofHardware section.

Clicking the Upload Control Command Only buttonwrites the control command to all cascaded MAX6972s(see Figure 2). Refer to the MAX6972/MAX6973 datasheet Commands section.

Individual Board OptionsThe Individual Board Options controls apply to thethree MAX6972s on the selected board. If using a sin-gle EV kit board, leave Select Board set at 1. See theCascading Boards section.

The Board Calibration controls determine the peakLED current for each group of output ports. Becausethe LEDs used on the EV kit board are only rated for20mA, setting the calibration controls to a value greaterthan about 50/255 can exceed the LED’s rated drivecurrent, 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 themwith the mouse. The Change… button chooses thecolor of the single selected LED. Clicking the ChangeAll button sets all 32 LEDs to a chosen color.

Upload AllClicking the Upload All button writes universal andindividual board options to all cascaded MAX6972s.

File-Load Test PatternsPressing 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 “test_” 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 oneslave board with a 4 x 16 pattern where all of the LEDsare on. The test pattern default.clr is loaded at startup.

Disabling LED MultiplexingAs shipped from the factory, the 4 x 8 grid of tricolorLEDs is multiplexed. To disable multiplexing, and driveonly the left 4 x 4 half of the grid, two steps are neces-sary. First, jumpers JU1–JU6 and JU19–JU24 must bereconfigured. See Table 5. Second, the Multiplexingmust be set to Disabled in Universal Options.

Cascading BoardsTwo or more MAX6972 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 tothe J2 socket of the next board.

2) The board on the left is the master. On the masterboard, set the JU14–JU18 shunts to position 1-2.On all other boards, set the JU14–JU18 shunts toposition 2-3.

3) The board on the right is the last slave. On the lastslave board, set the JU10–JU13 shunts closed. Onall other boards, remove the JU10–JU13 shunts.

4) Connect 5VDC power to the master board, betweenthe VLED and GND pads.

5) Connect a cable from the computer’s serial port tothe 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 bylaunching MAX6972.msi. The program files arecopied and icons are created for them in theWindows Start menu.

7) Turn on the power supply. None of the LEDs lightup at this time.

8) Start the MAX6972 program by opening its icon inthe Windows Start menu.

9) In the Select Maxim MAX6972 Evaluation KitSoftware Mode window, select Connect to EVKiton port (Autodetect). See Figure 1. Click OK.

10) Set the software’s Cascaded Boards to 2, 3, 4, or5, depending on the number of boards used.

11) Set the software’s Select Board to 1 to work withthe master board.

12) In the Board 1 LED Colors grid, double-click oneof the large round color dots in the 4 x 8 grid (orselect one of the dots and click OK). The standardcolor selector dialog box appears. Select a colorand click OK.

13) Click Upload All to write the 4 x 8 color grid data tothe 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 clickUpload All. Verify that the LEDs are brighter.

15) Set the software’s Select Board to 2 to work withthe next board, and repeat the process of settingLED colors, global intensity, and upload all.

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MAX6972 Evaluation Kit

_______________________________________________________________________________________ 3

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2 Slideshow DemoThe 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 adjustedbetween 50ms and 30s.

Detailed Description of HardwareThe MAX6972 precision current-sinking, 16-output PWMLED drivers (U1, U2, and U3) drive a 4 x 8 multiplexedgrid of red-green-blue LEDs in the common-anode con-figuration. Common-emitter pnp BJTs (Q1–Q6) switch theLED supply voltage in the multiplexing configuration.Because the blue LEDs require the closest output-currentmatching, one device drives all the blue LEDs, and theother devices multiplex between red and green. SeeTables 1 and 2.

User-supplied DC power between 5V and 7V, appliedbetween the VLED and GND pads, is regulated by threeMAX1658/MAX1659 low-dropout linear regulators (U8,U9, and U10) to produce 5V, 3.3V, and 2.5V supply rails.

The MAXQ2000 microcontroller (U4) drives theMAX9112 LVDS level shifter (U5). When JU14–JU18 arein the 1-2 position, this microcontroller drives the

MAX6972 LED display drivers (U1, U2, and U3). A32MHz crystal oscillator (Y2) is used to demonstrateoptimum PWM frequency by driving the LVDS clocksignal between command sequences. During com-mand sequences, the MAXQ2000 bit bangs the LVDSclock at 2.8MHz.

When used with the software, the MAX3311 (U7) trans-lates the RS-232 signal levels from the COM port (P1) tologic-level signals. Resistor-dividers R23/R24 convertthe 5V logic output into 3.3V logic.

When JU14–JU18 are in the 2-3 position, external LVDSsignals must be applied to connector J2. In this slaveconfiguration, the MAXQ2000 (U4), MAX9112 (U5), andMAX3311 (U7) are not used.

LED Power DissipationPeak LED current is set by each port’s LED current cali-bration register. This 8-bit DAC allows peak LED cur-rent to be reduced to between 20% and 100% of thefull-scale rating, 55mA. Setting the current calibrationregister to a value of 0 limits the peak LED current to11mA (20% of 55mA). By writing different values to thered, green, and blue ports’ current calibration registers,the display’s color balance can be adjusted to compen-sate for LED efficacy variations.

The evaluation kit is shipped from the factory with anLED type (Stanley URGB1308B) that has a maximum rat-ing of 20mA forward current or 84mW power dissipation.

Evaluating the MAX6973The MAX6972 EV kit’s software and firmware are onlycapable of driving 12-bit PWM values. If the EV kit wereused to drive the MAX6973s instead, then the two leastsignificant bits of the individual pixel PWM values arenot accessible. See Tables 3 and 4.

MAX6972 Evaluation Kit

4 _______________________________________________________________________________________

Table 1. LED Nonmultiplexing

IC/PORT LED DEVICES DRIVEN COLORS

U1 port Y D1 to D8 Red

U1 port Z D1 to D8 Green

U2 port Y D9 to D16 Red

U2 port Z D9 to D16 Green

U3 port Y D1 to D8 Blue

U3 port Z D9 to D16 Blue

Table 2. LED Multiplexing

IC/PORT LED DEVICES DRIVEN COLORS

D1 to D8U1 port Y

D17 to D24Red

D1 to D8U1 port Z

D17 to D24Green

D9 to D16U2 port Y

D25 to D32Red

D9 to D16U2 port Z

D25 to D32Green

D1 to D8U3 port Y

D9 to D16Blue

D17 to D24U3 port Z

D25 to D32Blue

Table 3. Device Comparison—Nonmultiplexed Operation

M A X6 9 7 2 M A X6 9 7 3 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

2 ( Y , Z ) 2 ( Y , Z ) N um b er of LE D cur r ent cal i b r ati onr 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

55m A 55m AM axi m um LE D d r i ve cur r ent( LE D cur r ent cal i b r ati on = 255)

11m A 11m ALE D d r i ve cur r ent( LE D cur r ent cal i b r ati on = 0)

16 16 N um b er of p i xel s

12 b i ts 14 b i tsInd i vi d ual p i xel P W M - i ntensi ty- contr ol r esol uti on

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Table 4. Device Comparison—Multiplexed OperationM A X6 9 7 2 M A X6 9 7 3 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

2 ( Y , Z ) 2 ( Y , Z ) N um b er of LE D cur r ent cal i b r ati onr 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

55m A 55m AM axi m um LE D d r i ve cur r ent( LE D cur r ent cal i b r ati on = 255)

11m A 11m ALE D d r i ve cur r ent( LE D cur r ent cal i b r ati on = 0)

32 32 N um b er of p i xel s

12 b i ts 14 b i tsInd 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.

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.

*Default jumper setting.

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MAX6972 Evaluation Kit

6 _______________________________________________________________________________________

Table 5. Jumper Functions Table (continued)

JUMPER PINS FUNCTION

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 MAX6972 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 MAX6972 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 MAX6972 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 MAX6972 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 MAX6972 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.

1-2* Enables LED multiplexing.

2-3 Disables LED multiplexing.JU21

Open Not valid. Do not use.

Closed* Enables LED multiplexing.JU22

Open Disables LED multiplexing.

Closed* Enables LED multiplexing.JU23

Open Disables LED multiplexing.

Closed* Enables LED multiplexing.JU24

Open Disables LED multiplexing.

*Default jumper setting.

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MAX6972 Evaluation Kit

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Figure 1. Select Maxim MAX6972 EV Kit Software ModeScreenshot

Figure 2. MAX6972 EV Kit—Connected to COM1 Main WindowScreenshot

Figure 3. Click to Upload Color Test Pattern Screenshot

Figure 4. Demo Mode Screenshot

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MAX6972 Evaluation Kit

8 _______________________________________________________________________________________

Figure 5. MAX6972 EV Kit Schematic (Sheet 1 of 5)

MAX

6972

U2

EXPO

SED

PADD

LE T

O GN

D

LOAD

O18

Z7_B

25

Z7

Z3_B

29

Z3

Z4_B

28

Z4

Z6_B

26

Z6

Z5_B

27

Z5

Z2_B

30

Z2

Z1_B

31

Z1

Z0_B

32

Z0

Y0_B

9

Y0

Y7_B

16

Y7

Y6_B

15

Y6

Y5_B

14

Y5

Y4_B

13

Y4

Y3_B

12

Y3

Y2_B

11

Y2

Y1_B

10

Y1

GND

24*

1V D

D

C5 10μF

C10

0.47

μF

+3.3

V

CLKO

+22

CLKO

-21

R5 200Ω

1%

DOUT

+20

DOUT

-19

R6 200Ω

1%

V DD

17

+3.3

V

C9 0.47

μF

LOAD

I7

DIN-

6

DIN+

5

CLKI

-4

CLKI

+3

TST

82M

UX0

MUX

0_B

23M

UX1

MUX

1_B

MAX

6972

U1

EXPO

SED

PADD

LE T

O GN

D

LOAD

O18

Z7_A

25

Z7

Z3_A

29

Z3

Z4_A

28

Z4

Z6_A

26

Z6

Z5_A

27

Z5

Z2_A

30

Z2Z1_A

31

Z1

Z0_A32

Z0

Y0_A

9

Y0

Y7_A

16

Y7

Y6_A

15

Y6

Y5_A

14

Y5

Y4_A

13

Y4

Y3_A

12

Y3

Y2_A

11

Y2

Y1_A

10

Y1

GND

24*

1V D

D

C4 10μF C8

0.47

μF

+3.3

V

CLKO

+22

CLKO

-21

R3 200Ω

1%

DOUT

+20

DOUT

-19

R4 200Ω

1%

V DD

17

+3.3

V

C7 0.47

μF

LOAD

I7

LOAD

I

DIN-

6DI

N-

DIN+

5DI

N+

CLKI

-4

CLKI

-

CLKI

+3

CLKI

+

TST

82M

UX0

MUX

0_A

23M

UX1

MUX

1_A

2VL

ED

IN INOU

T

1SE

T7 6

5

IN3

48 OUT

MAX

1658

U8SH

DN +3.3

V

C2 100μ

F

+3.3

V

GND

VLED

2VL

ED

IN INOU

T

1SE

T7 6

5

IN3

48 OUT

MAX

1659

U10

SHDN +5

V

C30

10μF

+5V

GND

VLED

VLED

2

IN INOU

T

1SE

T7 6

5

IN3

48 OUT

MAX

1658

U9SH

DN +2.5

V

C3 10μF

GND

VLED

+2.5

V

R25

267k

Ω1% R2

624

9kΩ

1%

VLED

C1 100μ

F

VLED

5.5

5V

GND

*PIN

24

OF M

AX69

72 S

HOUL

D BE

ROU

TED

TO G

ROUN

D SE

PARA

TELY

.

MAX

6972

U3

EXPO

SED

PADD

LE T

O GN

D

LOAD

O18

Z7_C

25

Z7

Z3_C

29

Z3

Z4_C

28

Z4

Z6_C

26

Z6

Z5_C

27

Z5

Z2_C

30

Z2

Z1_C

31

Z1

Z0_C

32

Z0

Y0_C

9

Y0

Y7_C

16

Y7

Y6_C

15

Y6

Y5_C

14

Y5

Y4_C

13

Y4

Y3_C

12

Y3

Y2_C

11

Y2

Y1_C

10

Y1

GND

24*

1V D

D

C6 10μF

C12

0.47

μF

+3.3

V

CLKO

+22

CLKO

-21

DOUT

+20

DOUT

-19

V DD

17

+3.3

V

C11

0.47

μF

LOAD

I7

DIN-

6

DIN+

5

CLKI

-4

CLKI

+3

TST

82M

UX0

MUX

0_C

23M

UX1

MUX

1_C LO

ADO

43OU

T1

1 GND

MAX

9113

U6

OUT2

DOUT

CLKO

2V CC

+3.3

V

C20

0.00

1μF

C13

0.1μ

F

JU12

JU13

IN2-

5IN

2+6

R10

200Ω

1%

TP10

J3-5

J3-6

J3-8

J3-7

J3-3

J3-1

J3

J3-4

J3-2

J3-1

0J3

-9

VLED

VLED

LOAD

ON.

C.TP6

JU11

JU10

IN1-

8

IN1+

7

R9 200Ω

1%

TP7

TP8

TP9

Page 9: MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630  ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

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MAX6972 Evaluation Kit

_______________________________________________________________________________________ 9

Figure 5. MAX6972 EV Kit Schematic (Sheet 2 of 5)

SEG1

11

SEG1

22

SEG1

33

SEG1

44

SEG1

55

SEG1

66

SEG1

77

SEG1

88

SEG1

99

SEG2

010

SEG2

111

SEG2

212

SEG2

313

SEG2

414

SEG2

515

SEG2

616

SEG2

717

T048

T0B

47

V DD

49

HFXI

N51

T246

T2B

45

T144

T1B

43

GND

42

MIS

O41

SCLK

40

MOS

I39

32KO

UT3538

TX1

37

RX1

36

OSC_

EN

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

VADJ

VLCD2

VLCD1

VLCD

RXO

1920

2122

2324

2526

2930

3132

33

6867

6665

6463

6261

6059

5857

5655

5453

TXO

52

SEG29

SEG30

SEG31

SEG32

SEG33

SEG34

SEG35

COM0

2728

VDDIO

GND

TCK

34

32KIN

TDI

TMS

TDO

50HF

XOUT

Y1

C28

10pF

C29

10pF

SS

RESET

C15

0.1μ

F

+2.5

V

U4

MAX

Q200

0

EXPO

SED

PADD

LE U

NCON

NECT

ED

SEG28

18

+3.3

V

C16

0.1μ

F

J1-7

J1-8

J1-2

J1-9

J1-5

J1-3

J1

J1-6

J1-4

J1-1

0J1

-1

+3.3

V

N.C.

N.C.

TXO

RXO

CLKO

DOUT

LOAD

O

+5V

41V C

C C1-

C1+

MAX

3311

U7

TIN

TXO

5RO

UTRX

O

3

29

C18

0.1μ

F

C17

0.1μ

F

RIN

6

TOUT

7

GND

10SH

DN

R23

4.99

kΩ1%

R24

9.53

kΩ 1%

V-8

C19

0.1μ

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

J2-7

J2-9

J2-8

J2-4

J2-2

J2

J2-3

J2-1

J2-1

0

VLED

VLED

31DI

N1

4 GND

MAX

9112

U5

DIN2

2V CC

C14

0.1μ

FC2

10.

001μ

F

DO2-

5DO

2+6

R8 200Ω

1%

DO1-

8

DO1+

7

R7 200Ω

1%2

3

1TR

I

GND

OUT

OSC_

ENVC

C4

+3.3

V+3

.3V

C31

0.01

μFY2

12

3

JU15 1

2

3

JU17 1

2

3

JU18

DIN-

12

3

JU16

CLKI

+

12

3

JU14

LOAD

I

R1 200Ω

1%

CLKI

-

CLKI

+

TP1

TP3

TP2

R2 200Ω

1%

DIN+

TP4

TP5

N.C.

DIN-

Page 10: MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630  ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

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MAX6972 Evaluation Kit

10 ______________________________________________________________________________________

Figure 5. MAX6972 EV Kit Schematic (Sheet 3 of 5)

D19-

A

PY2_

APV

MUX

1_A

D19-

B

PZ2_

APV

MUX

1_A

D19-

C

PY2_

CPV

MUX

1_C

D20-

A

PY3_

APV

MUX

1_A

D20-

B

PZ3_

APV

MUX

1_A

D20-

C

PY3_

CPV

MUX

1_C

D21-

A

PY4_

APV

MUX

1_A

D21-

B

PZ4_

APV

MUX

1_A

D21-

C

PY4_

CPV

MUX

1_C

D22-

A

PY5_

APV

MUX

1_A

D22-

B

PZ5_

APV

MUX

1_A

D22-

C

PY5_

CPV

MUX

1_C

D23-

A

PY6_

APV

MUX

1_A

D23-

B

PZ6_

APV

MUX

1_A

D23-

C

PY6_

CPV

MUX

1_C

D24-

A

PY7_

APV

MUX

1_A

D24-

B

PZ7_

APV

MUX

1_A

D24-

C

PY7_

CPV

MUX

1_C

D25-

A

PY0_

BPV

MUX

1_B

D25-

B

PZ0_

BPV

MUX

1_B

D25-

C

PZ0_

CPV

MUX

1_C

D26-

A

PY1_

BPV

MUX

1_B

D26-

B

PZ1_

BPV

MUX

1_B

D26-

C

PZ1_

CPV

MUX

1_C

D27-

A

PY2_

BPV

MUX

1_B

D27-

B

PZ2_

BPV

MUX

1_B

D27-

C

PZ2_

CPV

MUX

1_C

D13-

A

PY4_

BPV

MUX

0_B

D13-

B

PZ4_

BPV

MUX

0_B

D13-

C

PZ4_

CPV

MUX

0_C

D14-

A

PY5_

BPV

MUX

0_B

D14-

B

PZ5_

BPV

MUX

0_B

D14-

C

PZ5_

CPV

MUX

0_C

D15-

A

PY6_

BPV

MUX

0_B

D15-

B

PZ6_

BPV

MUX

0_B

D15-

C

PZ6_

CPV

MUX

0_C

D16-

A

PY7_

BPV

MUX

0_B

D16-

B

PZ7_

BPV

MUX

0_B

D16-

C

PZ7_

CPV

MUX

0_C

D17-

A

PY0_

APV

MUX

1_A

D17-

B

PZ0_

APV

MUX

1_A

D17-

C

PY0_

CPV

MUX

1_C

D18-

A

PY1_

APV

MUX

1_A

D18-

B

PZ1_

APV

MUX

1_A

D18-

C

PY1_

CPV

MUX

1_C

D7-A

PY6_

APV

MUX

0_A

D7-B

PZ6_

APV

MUX

0_A

D7-C

PY6_

CPV

MUX

0_C

D8-A

PY7_

APV

MUX

0_A

D8-B

PZ7_

APV

MUX

0_A

D8-C

PY7_

CPV

MUX

0_C

D9-A

PY0_

BPV

MUX

0_B

D9-B

PZ0_

BPV

MUX

0_B

D9-C

PZ0_

CPV

MUX

0_C

D10-

A

PY1_

BPV

MUX

0_B

D10-

B

PZ1_

BPV

MUX

0_B

D10-

C

PZ1_

CPV

MUX

0_C

D11-

A

PY2_

BPV

MUX

0_B

D11-

B

PZ2_

BPV

MUX

0_B

D11-

C

PZ2_

CPV

MUX

0_C

D12-

A

PY3_

BPV

MUX

0_B

D12-

B

PZ3_

BPV

MUX

0_B

D12-

C

PZ3_

CPV

MUX

0_C

D2-A

PY1_

APV

MUX

0_A

D2-B

PZ1_

APV

MUX

0_A

D2-C

PY1_

CPV

MUX

0_C

D3-A

PY2_

APV

MUX

0_A

D3-B

PZ2_

APV

MUX

0_A

D3-C

PY2_

CPV

MUX

0_C

D4-A

PY3_

APV

MUX

0_A

D4-B

PZ3_

APV

MUX

0_A

D4-C

PY3_

CPV

MUX

0_C

D5-A

PY4_

APV

MUX

0_A

D5-B

PZ4_

APV

MUX

0_A

D5-C

PY4_

CPV

MUX

0_C

D6-A

PY5_

APV

MUX

0_A

D6-B

PZ5_

APV

MUX

0_A

D6-C

PY5_

CPV

MUX

0_C

D1-A

PY0_

AJU

7PV

MUX

0_A

D1-C

PY0_

CJU

9PV

MUX

0_C

D1-B

PZ0_

AJU

8PV

MUX

0_A

Page 11: MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630  ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

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Figure 5. MAX6972 EV Kit Schematic (Sheet 4 of 5)

D28-

A

PY3_

BPV

MUX

1_B

D28-

B

PZ3_

BPV

MUX

1_B

D28-

C

PZ3_

CPV

MUX

1_C

D29-

A

PY4_

BPV

MUX

1_B

D29-

B

PZ4_

BPV

MUX

1_B

D29-

C

PZ4_

CPV

MUX

1_C

D30-

A

PY5_

BPV

MUX

1_B

D30-

B

PZ5_

BPV

MUX

1_B

D30-

C

PZ5_

CPV

MUX

1_C

D31-

A

PY6_

BPV

MUX

1_B

D31-

B

PZ6_

BPV

MUX

1_B

D31-

C

PZ6_

CPV

MUX

1_C

D32-

A

PY7_

BPV

MUX

1_B

D32-

B

PZ7_

BPV

MUX

1_B

D32-

C

PZ7_

CPV

MUX

1_C

12

3

JU19

R11

182Ω 1%

23

1Q1

VMUX

O_A

JU1

R17

562Ω

1%

MUX

O_A

C22

120p

F

12

3

JU20

R12

182Ω 1%

23

1Q2

VMUX

O_B

JU2

R18

562Ω

1%

MUX

O_B

C23

120p

F

12

3

JU21

R13

182Ω 1%

23

1Q3

VMUX

O_C

JU3

R19

562Ω

1%

MUX

O_C

C24

120p

F

JU22

R14

182Ω 1%

23

1Q4

VMUX

1_A

JU4

R20

562Ω

1%

MUX

1_A

C25

120p

F

JU24

R16

182Ω 1%

23

1Q6

VMUX

1_C

JU6

R22

562Ω

1%

MUX

1_C

C27

120p

F

JU23

R15

182Ω 1%

23

1Q5

VMUX

1_B

JU5

R21

562Ω

1%

MUX

1_B

C26

120p

F

VLED

Page 12: MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630  ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

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MAX6972 Evaluation Kit

12 ______________________________________________________________________________________

Figure 5. MAX6972 EV Kit Schematic (Sheet 5 of 5)

J4-1

1

J4-1

3

J4-9

J4-7

J4

J4-8

J4-1

6

J4-1

4

J4-1

2

J4-1

0

J4-1

5

J4-5

J4-6

J4-3

J4-1

J4-4

J4-2

J4-2

7

J4-2

9

J4-2

5

J4-2

3

J4-3

2

J4-1

8

J4-2

0

J4-2

2

J4-2

4

J4-2

6

J4-2

8

J4-3

0

J4-3

1Y7

_A

Y4_A

Y3_A

Y5_A

Y6_A

PY3_

A

PY4_

A

PY5_

A

PY6_

A

J4-2

1

J4-1

9

J4-1

7

Y1_A

Y0_A

Y2_A

PYO_

A

PY1_

A

PY2_

A

PY7_

A

J4-4

3

J4-4

5

J4-4

1

J4-3

9

J4-4

8

J4-3

4

J4-3

6

J4-3

8

J4-4

0

J4-4

2

J4-4

4

J4-4

6

J4-4

7Z7

_A

Z4_A

Z3_A

Z5_A

Z6_A

PZ3_

A

PZ4_

A

PZ5_

A

PZ6_

A

J4-3

7

J4-3

5

J4-3

3

Z1_A

Z0_A

Z2_A

PZO_

A

PZ1_

A

PZ2_

A

PZ7_

A

(ODD

PIN

S CO

NNEC

T TO

EVE

N PI

NS O

N TO

P OF

PC

BOAR

D)

VMUX

0_A

VMUX

0_B

VMUX

0_C

VMUX

1_A

VMUX

1_B

VMUX

1_C

PVM

UX0_

A

PVM

UX0_

B

PVM

UX0_

C

PVM

UX1_

A

PVM

UX1_

B

PVM

UX1_

C

J4

J4-5

9

J4-6

1

J4-5

7

J4-5

5

J4-6

4

J4-5

0

J4-5

2

J4-5

4

J4-5

6

J4-5

8

J4-6

0

J4-6

2

J4-6

3Y7

_B

Y4_B

Y3_B

Y5_B

Y6_B

PY3_

B

PY4_

B

PY5_

B

PY6_

B

J4-5

3

J4-5

1

J4-4

9

Y1_B

Y0_B

Y2_B

PYO_

B

PY1_

B

PY2_

B

PY7_

B

J4-7

5

J4-7

7

J4-7

3

J4-7

1

J4-8

0

J4-6

6

J4-6

8

J4-7

0

J4-7

2

J4-7

4

J4-7

6

J4-7

8

J4-7

9Z7

_B

Z4_B

Z3_B

Z5_B

Z6_B

PZ3_

B

PZ4_

B

PZ5_

B

PZ6_

B

J4-6

9

J4-6

7

J4-6

5

Z1_B

Z0_B

Z2_B

PZO_

B

PZ1_

B

PZ2_

B

PZ7_

B

(ODD

PIN

S CO

NNEC

T TO

EVE

N PI

NS O

N TO

P OF

PC

BOAR

D)

J4

J4-9

1

J4-9

3

J4-8

9

J4-8

7

J4-9

6

J4-8

2

J4-8

4

J4-8

6

J4-8

8

J4-9

0

J4-9

2

J4-9

4

J4-9

5Y7

_C

Y4_C

Y3_C

Y5_C

Y6_C

PY3_

C

PY4_

C

PY5_

C

PY6_

C

J4-8

5

J4-8

3

J4-8

1

Y1_C

Y0_C

Y2_C

PYO_

C

PY1_

C

PY2_

C

PY7_

C

J4-1

07

J4-1

09

J4-1

05

J4-1

03

J4-1

12

J4-9

8

J4-1

00

J4-1

02

J4-1

04

J4-1

06

J4-1

08

J4-1

10

J4-1

11Z7

_C

Z4_C

Z3_C

Z5_C

Z6_C

PZ3_

C

PZ4_

C

PZ5_

C

PZ6_

C

J4-1

01

J4-9

9

J4-9

7

Z1_C

Z0_C

Z2_C

PZO_

C

PZ1_

C

PZ2_

C

PZ7_

C

(ODD

PIN

S CO

NNEC

T TO

EVE

N PI

NS O

N TO

P OF

PC

BOAR

D)

Page 13: MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630  ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

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______________________________________________________________________________________ 13

Figure 6. MAX6972 EV Kit Component Placement Guide—Component Side

Page 14: MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630  ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

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14 ______________________________________________________________________________________

Figure 7. MAX6972 EV Kit PC Board Layout—Component Side

Page 15: MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630  ... and the chroma pattern is immediately loaded. ... MAX6972 Evaluation Kit *

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. 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 ____________________ 15

© 2006 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.

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MAX6972 Evaluation Kit

Figure 8. MAX6972 EV Kit PC Board Layout—Solder Side

Springer