MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630 ... and the...
Transcript of MAX6972 Evaluation Kit - Maxim Integrated · Zetex USA 631-543-7100 631-864-7630 ... and the...
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
Eva
lua
tes: M
AX
69
72
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)
Eva
lua
tes:
MA
X6
97
2
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.
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.
Eva
lua
tes: M
AX
69
72
MAX6972 Evaluation Kit
_______________________________________________________________________________________ 3
Eva
lua
tes:
MA
X6
97
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
Eva
lua
tes: M
AX
69
72
MAX6972 Evaluation Kit
_______________________________________________________________________________________ 5
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.
Eva
lua
tes:
MA
X6
97
2
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.
Eva
lua
tes: M
AX
69
72
MAX6972 Evaluation Kit
_______________________________________________________________________________________ 7
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
Eva
lua
tes:
MA
X6
97
2
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
Eva
lua
tes: M
AX
69
72
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-
Eva
lua
tes:
MA
X6
97
2
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
Eva
lua
tes: M
AX
69
72
MAX6972 Evaluation Kit
______________________________________________________________________________________ 11
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
Eva
lua
tes:
MA
X6
97
2
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)
Eva
lua
tes: M
AX
69
72
MAX6972 Evaluation Kit
______________________________________________________________________________________ 13
Figure 6. MAX6972 EV Kit Component Placement Guide—Component Side
Eva
lua
tes:
MA
X6
97
2
MAX6972 Evaluation Kit
14 ______________________________________________________________________________________
Figure 7. MAX6972 EV Kit PC Board Layout—Component Side
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.
Eva
lua
tes: M
AX
69
72
MAX6972 Evaluation Kit
Figure 8. MAX6972 EV Kit PC Board Layout—Solder Side
Springer