MAX6974 Evaluation Kit - Digi-Key Sheets/Maxim PDFs/MAX6974_Eva… · The MAX6974 evaluation kit (EV kit) ... Zetex USA 631-543-7100 631-864-7630 ... and the chroma pattern is immediately

General DescriptionThe MAX6974 evaluation kit (EV kit) is an assembled andtested printed circuit board (PCB) that demonstrates theMAX6974/ MAX6975 precision current-sinking, 24-outputPWM LED drivers. The MAX6974/MAX6975 functionalitycan be evaluated using the MAX6974 EV kit. TheMAX6975 has 14-bit individual PWM and 5-bit globalPWM, while the MAX6974 has 12-bit individual PWM and7-bit global PWM. The evaluation kit comes with aMAX6974ATL+ installed. The Windows® 98/2000/XPsoftware 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

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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’s website at www.maxim-ic.com.

Ordering InformationPART TYPE INTERFACE REQUIREMENTS

MAX6974EVKIT+ 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, C3 2100µF ±20%, 6.3V X 5R cap acitor s ( 1210) TD K C 3225X 5R0J107M

C4, C5, C25 310µF ± 10% , 6.3V X 5R cap aci tor s ( 0603) TD K C 1608X 5R0J106K

C6–C9 40.47µF ± 10%, 6.3V X5R cap aci tors ( 0402)TD K C 1005X 5R0J474K

C10–C16 70.1µF ± 10%, 6.3V X 5R cap aci tor s ( 0402) TD K C 1005X 5R0J104K

C17, C18 20.001µF ±10%, 25V X5R capacitors (0402)TD K C 1005X5R1E 102K

C19–C22 4120p F ± 5% , 25V C 0G cap aci tor s ( 0402) TD K C 1005C 0G1E 121J

C23, C24 210p F ± 5%, 25V C 0G cap aci tor s ( 0402) TD K C 1005C 0G1E 100J

C26 10.01µF ± 10%, 6.3V X 5R cap aci tor ( 0402) TD K C 1005X 5R1E 103K

D1–D32 32RGB 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 ListDESIGNATION QTY DESCRIPTION

JU1–JU13 13 2-pin headers

JU14–JU20 7 3-pin headers

P1 1 Female DB9 connector

Q1–Q4 4pnp transistorsZetex FMMTL717TA (SOT23)

R1–R8 8 200Ω ±1% resistors (0603)

R9–R12 4 182Ω ±1% resistors (0603)

R13–R16 4 562Ω ±1% resistors (0603)

R17 1 4.99kΩ ±1% resistor (0402)

R18 1 9.53kΩ ±1% resistor (0402)

R19 1 249kΩ ±1% resistor (0402)

R20 1 267kΩ ±1% resistor (0402)

TP1–TP10 0 Not installed

U1, U2 224-output LED driversMaxim MAX6974ATL+(40-pin TQFN, 6mm x 6mm EP)

U3 1Low-power microcontrollerMaxim MAXQ2000-RAX+(68-pin QFN, 10mm x 10mm EP)

U4 1Dual LVDS line driverMaxim MAX9112EKA+ (8-pin SOT23)

U5 1Dual LVDS line receiverMaxim MAX9113EKA+ (8-pin SOT23)

+Denotes a lead-free and RoHS-compliant EV kit.

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Quick StartRequired Equipment

Before you begin, you need the following equipment:

• Maxim MAX6974EVKIT

• 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–JU20 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 MAX6974.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 MAX6974 program by opening its icon inthe Start menu.

7) In the Select Maxim MAX6974 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 MAX6974 EV kit software controls one or moreMAX6974 EV kit boards, each of which has twoMAX6974s driving a 4 x 8 grid of LEDs.


2 _______________________________________________________________________________________

DESIGNATION QTY DESCRIPTION

U6 1RS - 232 tr anscei ver M axi m M AX 3311E U B+ ( 10- p i n µM AX ® )

U7, U8 2LDO linear regulatorsMaxim MAX1658ESA+ (8-pin SO)

U9 1LDO linear regulatorMaxim MAX1659ESA+ (8-pin SO)

Component List (continued)DESIGNATION QTY DESCRIPTION

Y1 120MHz crystalCitizen HCM49-20.000MABJ-UT

Y2 132MHz 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.

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

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 MAX6974s(see Figure 2). Refer to the MAX6974/MAX6975 datasheet Commands section, Table 15.

Individual Board OptionsThe Individual Board Options controls apply to thetwo MAX6974s on the selected board. If using a singleEV 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 MAX6974s.

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 tricolor LEDsis multiplexed. To disable multiplexing, and drive only theleft 4 x 4 half of the grid, two steps are necessary. First,jumpers JU1–JU6 and JU19 and JU20 must be reconfig-ured. See Table 5. Second, the Multiplexing must be setto Disabled in Universal Options.

Cascading BoardsTwo 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 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 MAX6974.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 MAX6974 program by opening its icon inthe Windows Start menu.

9) In the Select Maxim MAX6974 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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4 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 MAX6974 precision current-sinking, 24-output PWMLED drivers (U1, U2) drive a 4 x 8 multiplexed grid ofred-green-blue LEDs in the common-anode configura-tion. Common-emitter pnp BJTs (Q1–Q4) switch theLED supply voltage in the multiplexing configuration.See Tables 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 (U7,U8, and U9) to produce 5V, 3.3V, and 2.5V supply rails.

The MAXQ2000 microcontroller (U3) drives theMAX9112 LVDS level shifter (U4). When JU14–JU18 arein 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 PWMfrequency by driving the LVDS clock signal betweencommand 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) tologic-level signals. Resistor-dividers R17/R18 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 (U3), MAX9112 (U4), andMAX3311 (U6) 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, 30mA. Setting the current calibrationregister to a value of 0 limits the peak LED current to6mA (20% of 30mA). 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 MAX6975The MAX6974 EV kit’s software and firmware are onlycapable of driving 12-bit PWM values. If the EV kit wereused to drive the MAX6975s instead, then the two leastsignificant bits of the individual pixel PWM values arenot accessible. See Tables 3 and 4.


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 D8U1 port R

D17 to D24Red

D1 to D8U1 port G

D17 to D24Green

D9 to D16U2 port R

D25 to D32Red

D9 to D16U2 port G

D25 to D32Green

D1 to D8U1 port B

D9 to D16Blue

D17 to D24U2 port B

D25 to D32Blue

Table 3. Device Comparison—Nonmultiplexed 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 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

30m A 30m 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)

6m A 6m ALE 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 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 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 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

30m A 30m 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)

6m A 6m ALE 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 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* Normal operation.JU7

Open Force LED D1 red open fault condition.


Open Force LED D1 green open fault condition.


Open Force LED D1 blue open fault condition.

*Default jumper setting.

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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* Enables LED multiplexing.

2-3 Disables LED multiplexing.JU19


1-2* Enables LED multiplexing.

2-3 Disables LED multiplexing.JU20


*Default jumper setting.

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Figure 1. Select Maxim MAX6974 EV Kit Software ModeScreenshot

Figure 2. MAX6974 EV Kit—Connected to COM1 Main WindowScreenshot

Figure 3. Click to Upload Color Test Pattern Screenshot

Figure 4. Slideshow Screenshot

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8 _______________________________________________________________________________________

Figure 5a. MAX6974 EV Kit Schematic (Sheet 1 of 5)

2VL

ED

IN INOU

T

1SE

T7 6

5

IN3

48 OUT

MAX

1658

U7SH

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

U9SH

DN +5V

C25

10μF

+5V

GND

VLED

VLED

2

IN INOU

T

1SE

T7 6

5

IN3

48 OUT

MAX

1658

U8SH

DN +2.5

V

C3 100μ

F

GND

VLED

+2.5

V

R20

267k

Ω1% R1

924

9kΩ

1%

VLED

C1 100μ

F

VLED

5.5

5V

GND

*PIN

31

OF M

AX69

74 S

HOUL

D BE

ROU

TED

TO G

ROUN

D SE

PARA

TELY

.

MAX

6974

U1

EXPO

SED

PADD

LE T

O GN

D

LOAD

O25

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 GN

D

CLKO

+29

CLKO

-28

R5 200Ω

1%

DOUT

+27

DOUT

-26

R6 200Ω

1%

V DD

24

+3.3

V

C6 0.47

μF

GND

7

CLKI

+2

CLKI

+

1M

UX0_

A

DIN+

4DI

N+

3CL

KI-

CLKI

-

LOAD

I6

LOAD

I

5DI

N-DI

N-

R210

R2_A

9R1

R1_A

8R0

R0_A

30M

UX1

MUX

0M

UX1_

A

22G6

G6_A

21G5

G5_A

23G7

G7_A

+3.3

V

40 V DD

C7 0.47

μFC4

10μF

MAX

6974

U2

EXPO

SED

PADD

LE T

O GN

D

LOAD

O25

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 GN

D

CLKO

+29

CLKO

-28

DOUT

+27

DOUT

-26

V DD

24

+3.3

V

C8 0.47

μF

GND

7

CLKI

+21

MUX

0_B

DIN+

43CL

KI-

LOAD

I65

DIN-

R210

R2_B

9R1

R1_B

8R0

R0_B

30M

UX1

MUX

0M

UX1_

B

22G6

G6_B

21G5

G5_B

23G7

G7_B

+3.3

V

40 V DD

C9 0.47

μFC5

10μF

CLKO

-

TP7

DOUT

+

TP8

CLKO

+

TP6

DOUT

-

TP9

LOAD

O

TP10

CLKO

-

DOUT

+

DOUT

-

CLKO

+43

OUT1

1 GND

MAX

9113

U5

OUT2

DOUT

CLKO

2V CC

+3.3

V

C17

0.00

1μF

C10

0.1μ

F

JU12

JU13

IN2-

5IN

2+6

R8 200Ω

1%

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.

JU11

JU10

IN1-

8

IN1+

7

R7 200Ω

1%

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Figure 5b. MAX6974 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

C23

10pF

C24

10pF

SS

RESET

C12

0.1μ

F

+2.5

V

U3

MAX

Q200

0

EXPO

SED

PADD

LE U

NCON

NECT

ED

SEG28

18

+3.3

V

C13

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

U6

TIN

TXO

5RO

UTRX

O

3

29

C15

0.1μ

F

C14

0.1μ

F

RIN

6

TOUT

7

GND

10SH

DN

R17

4.99

kΩ1%

R18

9.53

kΩ 1%

V-8

C16

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

U4

DIN2

2V CC

C11

0.1μ

FC1

80.

001μ

F

DO2-

5DO

2+6

R4 200Ω

1%

DO1-

8

DO1+

7

R3 200Ω

1%2

3

1TR

I

GND

OUT

OSC_

ENVC

C4

+3.3

V+3

.3V

C26

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-

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10 ______________________________________________________________________________________

Figure 5c. MAX6974 EV Kit Schematic (Sheet 3 of 5)

D19-

A

PR2_

APV

MUX

1_A

D19-

B

PG2_

APV

MUX

1_A

D19-

C

PB2_

APV

MUX

1_A

D20-

A

PR3_

APV

MUX

1_A

D20-

B

PG3_

APV

MUX

1_A

D20-

C

PB3_

APV

MUX

1_A

D21-

A

PR4_

APV

MUX

1_A

D21-

B

PG4_

APV

MUX

1_A

D21-

C

PB4_

APV

MUX

1_A

D22-

A

PR5_

APV

MUX

1_A

D22-

B

PG5_

APV

MUX

1_A

D22-

C

PB5_

APV

MUX

1_A

D23-

A

PR6_

APV

MUX

1_A

D23-

B

PG6_

APV

MUX

1_A

D23-

C

PB6_

APV

MUX

1_A

D24-

A

PR7_

APV

MUX

1_A

D24-

B

PG7_

APV

MUX

1_A

D24-

C

PB7_

APV

MUX

1_A

D25-

A

PR0_

BPV

MUX

1_B

D25-

B

PG0_

BPV

MUX

1_B

D25-

C

PB0_

BPV

MUX

1_B

D26-

A

PR1_

BPV

MUX

1_B

D26-

B

PG1_

BPV

MUX

1_B

D26-

C

PB1_

BPV

MUX

1_B

D27-

A

PR2_

BPV

MUX

1_B

D27-

B

PG2_

BPV

MUX

1_B

D27-

C

PB2_

BPV

MUX

1_B

D13-

A

PR4_

BPV

MUX

0_B

D13-

B

PG4_

BPV

MUX

0_B

D13-

C

PB4_

BPV

MUX

0_B

D14-

A

PR5_

BPV

MUX

0_B

D14-

B

PG5_

BPV

MUX

0_B

D14-

C

PB5_

BPV

MUX

0_B

D15-

A

PR6_

BPV

MUX

0_B

D15-

B

PG6_

BPV

MUX

0_B

D15-

C

PB6_

BPV

MUX

0_B

D16-

A

PR7_

BPV

MUX

0_B

D16-

B

PG7_

BPV

MUX

0_B

D16-

C

PB7_

BPV

MUX

0_B

D17-

A

PR0_

APV

MUX

1_A

D17-

B

PG0_

APV

MUX

1_A

D17-

C

PB0_

APV

MUX

1_A

D18-

A

PR1_

APV

MUX

1_A

D18-

B

PG1_

APV

MUX

1_A

D18-

C

PB1_

APV

MUX

1_A

D7-A

PR6_

APV

MUX

0_A

D7-B

PG6_

BPV

MUX

0_A

D7-C

PB6_

APV

MUX

0_A

D8-A

PR7_

APV

MUX

0_A

D8-B

PG7_

APV

MUX

0_A

D8-C

PB7_

APV

MUX

0_A

D9-A

PR0_

BPV

MUX

0_B

D9-B

PG0_

BPV

MUX

0_B

D9-C

PB0_

BPV

MUX

0_B

D10-

A

PR1_

BPV

MUX

0_B

D10-

B

PG1_

BPV

MUX

0_B

D10-

C

PB1_

BPV

MUX

0_B

D11-

A

PR2_

BPV

MUX

0_B

D11-

B

PG2_

BPV

MUX

0_B

D11-

C

PB2_

BPV

MUX

0_B

D12-

A

PR3_

BPV

MUX

0_B

D12-

B

PG3_

BPV

MUX

0_B

D12-

C

PB3_

BPV

MUX

0_B

D2-A

PR1_

APV

MUX

0_A

D2-B

PG1_

APV

MUX

0_A

D2-C

PB1_

APV

MUX

0_A

D3-A

PR2_

APV

MUX

0_A

D3-B

PG2_

APV

MUX

0_A

D3-C

PB2_

APV

MUX

0_A

D4-A

PR3_

APV

MUX

0_A

D4-B

PG3_

APV

MUX

0_A

D4-C

PB3_

APV

MUX

0_A

D5-A

PR4_

APV

MUX

0_A

D5-B

PG4_

APV

MUX

0_A

D5-C

PB4_

APV

MUX

0_A

D6-A

PR5_

APV

MUX

0_A

D6-B

PG5_

APV

MUX

0_A

D6-C

PB5_

APV

MUX

0_A

D1-A

PR0_

AJU

7PV

MUX

0_A

D1-C

PB0_

AJU

9PV

MUX

0_A

D1-B

PG0_

AJU

8PV

MUX

0_A

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______________________________________________________________________________________ 11

Figure 5d. MAX6974 EV Kit Schematic (Sheet 4 of 5)

D28-

A

PR3_

BPV

MUX

1_B

D28-

B

PG3_

BPV

MUX

1_B

D28-

C

PB3_

BPV

MUX

1_B

D29-

A

PR4_

BPV

MUX

1_B

D29-

B

PG4_

BPV

MUX

1_B

D29-

C

PB4_

BPV

MUX

1_B

D30-

A

PR5_

BPV

MUX

1_B

D30-

B

PG5_

BPV

MUX

1_B

D30-

C

PB5_

BPV

MUX

1_B

D31-

A

PR6_

BPV

MUX

1_B

D31-

B

PG6_

BPV

MUX

1_B

D31-

C

PB6_

BPV

MUX

1_B

D32-

A

PR7_

BPV

MUX

1_B

D32-

B

PG7_

BPV

MUX

1_B

D32-

C

PB7_

BPV

MUX

1_B

12

3

JU19

R918

2Ω 1%

23

1Q1

VMUX

O_A

JU1

R13

562Ω

1%

MUX

O_A

C19

120p

F

12

3

JU20

R10

182Ω 1%

23

1Q2

VMUX

O_B

JU2

R14

562Ω

1%

MUX

O_B

C20

120p

F

JU5

R11

182Ω 1%

23

1Q3

VMUX

1_A

JU3

R15

562Ω

1%

MUX

1_A

C21

120p

F

JU6

R12

182Ω 1%

23

1Q4

VMUX

1_B

JU4

R16

562Ω

1%

MUX

1_B

C22

120p

F

VLED

Eva

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12 ______________________________________________________________________________________

Figure 5e. MAX6974 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

1R7

_A

R4_A

R3_A

R5_A

R6_A

PR3_

A

PR4_

A

PR5_

A

PR6_

A

J4-2

1

J4-1

9

J4-1

7

R1_A

R0_A

R2_A

PRO_

A

PR1_

A

PR2_

A

PR7_

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

7G7

_A

G4_A

G3_A

G5_A

G6_A

PG3_

A

PG4_

A

PG5_

A

PG6_

A

J4-3

7

J4-3

5

J4-3

3

G1_A

G0_A

G2_A

PGO_

A

PG1_

A

PG2_

A

PG7_

A

(ODD

PIN

S CO

NNEC

T TO

EVE

N PI

NS O

N TO

P OF

PCB

)

VMUX

0_A

VMUX

0_B

VMUX

1_A

VMUX

1_B

PVM

UX0_

A

PVM

UX0_

B

PVM

UX1_

A

PVM

UX1_

B

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

3B7

_A

B4_A

B3_A

B5_A

B6_A

PB3_

A

PB4_

A

PB5_

A

PB6_

A

J4-5

3

J4-5

1

J4-4

9

B1_A

B0_A

B2_A

PBO_

A

PB1_

A

PB2_

A

PB7_

A

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

9R7

_B

R4_B

R3_B

R5_B

R6_B

PR3_

B

PR4_

B

PR5_

B

PR6_

B

J4-6

9

J4-6

7

J4-6

5

R1_B

R0_B

R2_B

PRO_

B

PR1_

B

PR2_

B

PR7_

B

(ODD

PIN

S CO

NNEC

T TO

EVE

N PI

NS O

N TO

P OF

PCB

)

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

5G7

_B

G4_B

G3_B

G5_B

G6_B

PG3_

B

PG4_

B

PG5_

B

PG6_

B

J4-8

5

J4-8

3

J4-8

1

G1_B

G0_B

G2_B

PGO_

B

PG1_

B

PG2_

B

PG7_

B

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

11B7

_B

B4_B

B3_B

B5_B

B6_B

PB3_

B

PB4_

B

PB5_

B

PB6_

B

J4-1

01

J4-9

9

J4-9

7

B1_B

B0_B

B2_B

PBO_

B

PB1_

B

PB2_

B

PB7_

B

(ODD

PIN

S CO

NNEC

T TO

EVE

N PI

NS O

N TO

P OF

PCB

)

Eva

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Figure 6. MAX6974 EV Kit Component Placement Guide—Component Side

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Figure 7. MAX6974 EV Kit PCB Layout—Component Side

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Figure 8. MAX6974 EV Kit PCB Layout—Ground Layer 2

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Figure 9. MAX6974 EV Kit PCB Layout—Signal Layer 3

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 ____________________ 17

© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.

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Figure 10. MAX6974 EV Kit PCB Layout—Solder Side

Springer

Revision HistoryPages changed at Rev 1: 1, 2, 8–12, 14–17

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MAX6974 Evaluation Kit - Digi-Key Sheets/Maxim PDFs/MAX6974_Eva… · The MAX6974 evaluation kit (EV kit) ... Zetex USA 631-543-7100 631-864-7630 ... and the chroma pattern is immediately