MAX9591EVKIT_技术文档

19-4258; Rev 0; 8/08

MAX9591 Evaluation Kit

Evluates:0/MAX591

General Description

Features

The MAX9591 evaluation kit (EV kit) demonstrates the

MAX9591 reference-voltage generator for gamma cor-

rection in TFT-LCD panels, such as those found in high-

resolution TVs, high-end monitors, or for general

industrial reference-voltage generation. The MAX9591

EV kit provides 14 programmable reference-voltage

outputs (DAC outputs) and four static buffered refer-

ence-voltage outputs (reference outputs). The EV kit

uses a 9V to 20V DC power supply for powering the

application circuit.

♦ 14 8-Bit Programmable Reference Voltages (DAC

Outputs)

♦ Four Static Buffered Reference Voltages

(Reference Outputs)

♦ 400mA Peak Current on Reference Outputs and

DAC Outputs 1, 7, 8, and 14

♦ 200mA Peak Current on DAC Outputs 2–6 and

9–13

♦ 9V to 20V DC Power-Supply Operation

2

The EV kit features a USB-to-I C interface circuit.

2

♦ USB-Powered USB-to-I C Interface Circuit

®

Windows^®2000/XP/Vista -compatible software, with a

♦ Windows 2000/XP/Vista (32-Bit)-Compatible

graphical user interface (GUI), is available for exercis-

ing the MAX9591 features. The EV kit can also connect

to a user-supplied I C interface circuit for stand-alone

Software

2

♦ Lead-Free and RoHS Compliant

♦ Proven PCB Layout

MAX9591 operation.

The MAX9591 EV kit can also be used to evaluate the

MAX9590ETU+.

♦ Fully Assembled and Tested

Ordering Information

PART

TYPE

MAX9591EVKIT+

EV Kit

+Denotes lead-free and RoHS compliant.

Component List

DESIGNATION

QTY

DESCRIPTION

DESIGNATION

QTY

DESCRIPTION

22pF 5%, 50V C0G ceramic

capacitors (0603)

Murata GRM1885C1H220J or

TDK C1608C0G1H220J

0.1μF 10%, 16V X7R ceramic

capacitors (0603)

Murata GRM188R71C104K or

TDK C1608X7R1C104K

C1, C3–C10, C17,

C21, C22, C24,

C25

C18, C19

2

14

10μF 10%, 10V X5R ceramic

capacitors (0805)

Murata GRM219R61A106K

3300pF 10%, 50V X7R ceramic

capacitor (0603)

Murata GRM188R71H332K or

TDK C1608X7R1H332K

C2, C13, C15

C11, C12

3

2

C20

1

10pF 5%, 50V C0G ceramic

capacitors (0603)

Murata GRM1885C1H100J or

TDK C1608C0G1H100J

Not installed, ceramic capacitors

(0603)

C27–C44

0

3

10μF 20%, 25V X5R ceramic

capacitors (1210)

Murata GRM32DR61E106M

C45, C48, C51

1μF 10%, 10V X5R ceramic

capacitors (0603)

Murata GRM188R61A105K or

TDK C1608X5R1A105K

C14, C16, C23,

C26

4

Windows and Windows Vista are registered trademarks of Microsoft Corp.

________________________________________________________________ Maxim Integrated Products

1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

MAX9591 Evaluation Kit

Component List (continued)

DESIGNATION

QTY

DESCRIPTION

DESIGNATION

R39

QTY

DESCRIPTION

1.21kꢀ 1% resistor (0603)

1kꢀ 5% resistors (0603)

1

2

0.1μF 10%, 25V X7R ceramic

capacitors (0603)

Murata GRM188R71E104K or

TDK C1608X7R1E104K

R42, R43

C46, C47, C49,

C50

4

USB type-B right-angle female

receptacle

USB

U1

1

Green LED (0603)

Panasonic LNJ314G8TRA

Reference-voltage generator

(38 TQFN-EP*)

Maxim MAX9591ETU+

D1

FB1

J1

1

0

1

Not installed, ferrite-bead

inductor (0603)

Low-power 16-bit microcontroller

(68 QFN-EP*)

Maxim MAXQ2000-RAX+

Not installed, 40-pin dual-row

(2 x 20) header

U2

1

JU1–JU4

JU5

0

1

Not installed, 2-pin headers

3-pin header

93C46 3-wire 16-bit EEPROM

(8 SO)

U3

U4

1

JU6

5-pin header

UART-to-USB converter (32 TQFP)

OUT_REFL_H,

OUT_REFL_L,

OUT_REFU_H,

OUT_REFU_L,

OUT1–OUT14

3.3V regulator (5 SC70)

Maxim MAX8511EXK33+T

(Top Mark: AEI)

U5

U6

1

Not installed, small PCB test

points

0

2.5V regulator (5 SC70)

Maxim MAX8511EXK25+T

(Top Mark: ADV)

R1

R2

1

5

1

2

0

0ꢀ 5% resistor (0603)

220ꢀ 5% resistor (0603)

10kꢀ 5% resistor (0603)

2.2kꢀ 5% resistors (0603)

1.5kꢀ 5% resistor (0603)

27ꢀ 5% resistors (0603)

Not installed, resistor (0402)

Dual bidirectional level

translators (8 TDFN-EP*)

Maxim MAX3394EETA+T

(Top Mark: APE)

R3

R4, R9–R12

R5

U7, U8

2

Evluates:0/MAX591

R6, R7

R8

Y1

1

2

1

16MHz crystal

Y2

6MHz crystal

R13–R16,

R17–R36, R44

0

Not installed, resistors (0603)

—

Shunts (JU5, JU6)

PCB: MAX9591 Evaluation Kit+

—

R37, R41

R38, R40

2

100ꢀ 1% resistors (0603)

4.32kꢀ 1% resistors (0603)

*EP = Exposed pad.

Component Suppliers

SUPPLIER

PHONE

WEBSITE

www.murata-northamerica.com

www.panasonic.com

Murata Electronics North America, Inc.

Panasonic Corp.

770-436-1300

800-344-2112

847-803-6100

TDK Corp.

www.component.tdk.com

Note: Indicate that you are using the MAX9591 when contacting these component suppliers.

2

_______________________________________________________________________________________

MAX9591 Evaluation Kit

Evluates:0/MAX591

MAX9591 EV Kit Files

FILES

INSTALL.EXE

MAX9591.EXE

FTD2XX.INF

DESCRIPTION

Installs the EV kit files on your computer

Application program

USB device driver file

UNINST.INI

Uninstalls the EV kit software

USB driver installation help file

USB_Driver_Help.PDF

driver installation, Windows might show a warning

message indicating that the device driver Maxim

uses does not contain a digital signature. This is not

an error condition and it is safe to proceed with

installation. Refer to the USB_Driver_Help.PDF doc-

ument included with the software if there are any

problems during this step.

Quick Start

Required Equipment

Before beginning, the following equipment is needed:

•

MAX9591 EV kit (USB cable included)

A user-supplied Windows 2000/XP/Vista PC with a

spare USB port

5) Once the software and hardware installation is com-

plete, disconnect the USB cable from the EV kit.

•

9V to 20V DC power supply at 500mA

One digital voltmeter (DVM)

6) Verify that shunts are installed on:

Note: In the following sections, software-related items

are identified by bolding. Text in bold refers to items

directly from the EV kit software. Text in bold and under-

lined refers to items from the Windows operating system.

• Jumper JU5: Pins 1-2 (on-board 3.3V digital power

supply)

• Jumper JU6: Pins 1-2 (MAX9591 write address =

0xE8)

Procedure

The MAX9591 EV kit is fully assembled and tested.

Follow the steps below to verify board operation:

7) Connect the USB cable to the EV kit.

8) Connect the DVM negative terminal to the AGND

PCB pad next to the REFL_L PCB pad.

1) Visit www.maxim-ic.com/evkitsoftware to down-

load the latest version of the EV kit software,

9591Rxx.ZIP. Save the EV kit software to a tempo-

rary folder and uncompress the ZIP file.

9) Connect a voltage probe to the DVM positive terminal

for later use.

10) Set the power supply to 15V and disable the power-

supply output.

2) Install the EV kit software on your computer by run-

ning the INSTALL.EXE program inside the tempo-

rary folder. The program files are copied and icons

are created in the Windows Start | Programs menu.

11) Connect the power-supply positive terminal to the

AVDD PCB pad and the negative terminal to the

AGND PCB pad next to AVDD.

3) Connect the USB cable from the PC to the EV kit

board. A New Hardware Found window pops up

when installing the USB driver for the first time. If

you do not see a window that is similar to the one

described above after 30s, remove the USB cable

from the board and reconnect it. Administrator privi-

leges are required to install the USB device driver

on Windows.

12) Enable the power-supply output.

13) Start the MAX9591 EV kit software by opening its

icon in the Start | Programs menu. The EV kit soft-

ware main window appears, as shown in Figure 1.

14) Use the DVM voltage probe to measure the refer-

ence input voltages on the REFU_H, REFU_L,

REFL_H and REFL_L PCB pads, and type those val-

ues into the corresponding edit boxes of the

Reference Voltages (V) group box.

4) Follow the directions of the Add New Hardware

Wizard to install the USB device driver. Choose the

Search for the best driver for your device option.

Specify the location of the device driver to be

C:\Program Files\MAX9591 (default installation

directory) using the Browse button. During device

15) Press the Quick Start button.

16) Use the DVM voltage probe to verify that the DAC

output voltages are close to the voltages shown in

the Output (V) edit boxes for the respective channel.

_______________________________________________________________________________________

3

MAX9591 Evaluation Kit

Evluates:0/MAX591

Figure 1. MAX9591 Evaluation Software Main Window

1) Select the Bank A radio button in the Output Bank

Select group box. Select the Bank A Register

Settings tab.

Detailed Description of Software

The MAX9591 evaluation kit (EV kit) software main win-

dow is shown in Figure 1. The GUI software automati-

cally detects the MAX9591 device address and

displays it in the I2C Address Setting drop-down list

and in the software status bar. The DAC output volt-

ages in the Upper DAC Channels/Lower DAC

Channels group boxes are calculated using the upper

and lower reference input voltages on PCB pads

REFU_H, REFU_L, REFL_H, and REFL_L. The reference

input voltages MUST be measured at the appropriate

PCB pads and the values entered in the respective

Reference Voltages (V) edit boxes for the DAC output

calculations to be correct.

2) Select the Burst radio button in the Register

Addressing Mode group box.

3) Modify any of the DAC channel’s register values.

See the Output Register Values section for more

information.

4) Press the Load All Values To Registers button.

5) Select the Bank B radio button in the Output Bank

Select group box. Select the Bank B Register

Settings tab. Repeat steps 3 and 4.

The Quick Start button loads all bank A and bank B

registers with a predefined set of values.

Upon IC startup, the DAC outputs wake up in high-

impedance mode. To exit high-impedance mode, click

the Quick Start button or perform the following steps:

4

_______________________________________________________________________________________

MAX9591 Evaluation Kit

Evluates:0/MAX591

Register banks A and B are selectable using the radio

buttons in the Output Bank Select group box. Register

values are modified and loaded to registers using the

buttons, edit boxes, and scrollbars of the Bank _

Register Settings tabs where _ is either A or B.

Output Register Values

Each DAC channel’s register value can be set in three

different ways within the Upper DAC Channels/Lower

DAC Channels group boxes by:

1) Moving the channel’s scrollbar.

2

I C Address Setting

2) Typing register values directly into the channel’s

2

The MAX9591’s I C slave address is displayed in the

Reg Value edit box (decimal 8-bit equivalent).

status bar of the software window and the I2C Address

Setting drop-down list. If an address is manually

selected in the drop-down list, the software verifies the

address and changes the address displayed appropri-

ately. If no acknowledge is received from the EV kit, a

pop-up window is opened directing the user to properly

set jumper JU6 on the EV kit. If the Auto Detect

Address checkbox is checked, the software automati-

3) Typing the expected output voltage in the chan-

nel’s Output (V) edit box. The software uses a reg-

ister value that generates a voltage closest to the

desired voltage value.

When a register value is changed, the corresponding

field changes its color to red. A user should synchro-

nize the GUI fields and actual device registers by

pressing either the channel’s Load button (in single

mode) or the Load All Values To Registers button (in

burst mode).

2

cally detects the I C address of the MAX9591.

Upper and Lower DAC Output Voltages

The upper and lower DAC output voltages are generat-

ed using an on-board resistor-divider network. The user

can also apply external references to the REFU_H,

REFU_L, REFL_H, and REFL_L, and AGND PCB pads.

The voltages on these four pads MUST be captured and

typed into the appropriate edit boxes in the Reference

Voltages (V) group box for the calculated DAC output

voltages shown in the Upper DAC Channels/Lower

DAC Channels group boxes to be correct.

The Load All Reg Values From File button is used to

load all the register values and reference voltages from

a text file. The Save All Reg Values To File button is

used to save all the register values and reference volt-

ages on the current GUI to a user-named text file.

Register read/write operations can take place regard-

less of the output bank setting; for example, the user

can change bank B registers when bank A is buffered

to the outputs.

The transfer function for the upper DAC channels is:

Register Addressing Mode

The Burst and Single radio buttons in the Register

Addressing Mode group box set the MAX9591 soft-

ware operation mode.

D

256

V

= REFU_L +

× (REFU_H - REFU_L)

OUT

The transfer function for the lower DAC channels is:

D

When the Burst radio button is selected, all registers

for a single bank are updated using the Load All

Values To Registers or Load All Reg Values From

File buttons. The individual register’s Load buttons are

disabled.

V

= REFL_L +

× (REFL_H - REFL_L)

OUT

256

In both equations, D is the decimal register value. Refer

to the MAX9591 IC data sheet for more details.

When the Single radio button is selected, single regis-

ter values are updated using the individual register’s

Load buttons. The Load All Values To Registers and

Load All Reg Values From File buttons are disabled.

When the evaluation software is run for the first time, the

reference input-voltage values in the Reference

Voltages (V) group box are loaded from an initialization

file (REF.INI). When the program is closed, the current

values are logged in to the initialization file. The next

time the program is run, the latest values are loaded

automatically.

2

Register Mode I C Activity

The Register Mode I2C Activity group box is used for

the convenience of debugging when the Single radio

button is selected. When an individual register is writ-

Output Bank Select

The Bank A, Bank B, and A, B Alternating radio but-

tons in the Output Bank Select group box choose the

set of reference voltages buffered to the outputs

between bank A, bank B, or alternating between banks

A and B, with 1s hold time for each bank.

2

ten, the bits sent to the MAX9591 through the I C inter-

face are displayed.

_______________________________________________________________________________________

5

MAX9591 Evaluation Kit

Evluates:0/MAX591

2

Figure 2. Advanced I C Users Interface Window | 2-Wire Interface Tab

Advanced User Interface

A serial interface can be used by advanced users by

selecting Options | Interface (Advanced Users) from

the menu bar.

Click on the 2-wire interface tab shown in Figure 2.

Press the Hunt for active listeners button to obtain the

current MAX9591 slave address in the Target Device

Address combo box. In the General commands tab,

select 1 – SMBusWriteByte(addr,cmd,data8) from the

Command (SMBus Protocols, Raw Block Read/Write,

EEPROM Read/Write) drop-down list. Enter the desired

values into the Command byte and Data Out combo

boxes and then press the Execute button.

Detailed Description of Hardware

The MAX9591 evaluation kit (EV kit) demonstrates the

MAX9591 reference-voltage generator in a 38-pin

TQFN surface-mount package with an exposed pad.

EV kit applications include gamma correction in TFT-

LCD panels, such as those found in high-resolution

TVs, high-end monitors, or for general industrial refer-

ence-voltage generation. The MAX9591 EV kit provides

14 programmable reference-voltage outputs (DAC out-

puts) and four static buffered reference-voltage outputs

(DAC reference outputs) using four input reference volt-

ages (DAC reference inputs).

To monitor the MAX9591 EV kit’s 14 DAC outputs

(OUT1–OUT14) and four reference outputs (OUT_REFU_H,

OUT_REFU_L, OUT_REFL_H, and OUT_REFL_L), use

6

_______________________________________________________________________________________

MAX9591 Evaluation Kit

Evluates:0/MAX591

header J1 or the labeled test points. Reference outputs

OUT_REFU_H, OUT_REFU_L, OUT_REFL_H, OUT_REFL_L,

and DAC outputs OUT1, OUT7, OUT8, and OUT14 pro-

vide 400mA of peak current. DAC outputs OUT2–OUT6

and OUT9–OUT13 provide 200mA of peak current. Stay

within the MAX9591 IC’s power rating. Refer to the

MAX9591 IC data sheet for more information.

MAX9591 Slave Address Description

2

The MAX9591 I C slave address can be set by jumper

JU6. The slave address can be set to one of four dif-

ferent addresses. See Table 2 for slave address

configuration.

Stand-Alone User-Supplied

2

I C Communication

The on-board resistor-divider network (R37–R41) gener-

ates the reference inputs (REFU_H, REFU_L, REFL_H,

and REFL_L). The user can also apply external refer-

ence voltages to the REFU_H, REFU_L, REFL_H, and

REFL_L PCB pads after removing R37–R41.

The EV kit can be used in stand-alone operation to

2

interface with a user’s I C system without using a PC.

2

To use the MAX9591 EV kit with a user-supplied I C

interface, perform the following steps:

1) Viewing Figure 6, cut the SDA, SCL, STD_REG, and

BANK_SEL traces immediately to the left of the cor-

responding PCB pad.

The EV kit uses a 9V to 20V DC power supply, connected

across the AVDD and AGND PCB pads, for powering the

EV kit application circuit. The EV kit might require up to

500mA of supply current depending on output loading.

2) Disconnect the USB cable from the EV kit.

3) Move jumper JU5 shunt to pins 2-3.

Digital Supply Configuration

The MAX9591 EV kit provides two options to power the

MAX9591 digital supply input (DVDD). DVDD can oper-

4) Connect the positive terminal of a user-supplied 2.7V

to 5.5V DC power supply to the DVDD PCB pad and

the negative terminal to the nearby DGND PCB pad.

2

ate from the 3.3V supply generated by the USB-to-I C

interface circuit or from a user-supplied 2.7V to 5.5V

DC power supply connected across the DVDD and

DGND PCB pads. See Table 1 to configure DVDD

using jumper JU5.

5) Install 2.2kΩ 0603 surface-mount resistors at loca-

tions R35 and R36 to pull up user-supplied signals

SDA and SCL to DVDD if needed.

2

6) Connect the user-supplied I C interface signals,

Caution: Always ensure that DVDD is powered before

AVDD.

general-purpose output (GPO) control signals, and

signal ground return to the EV kit PCB pads, as

shown in Table 3.

Table 1. Digital Supply Configuration (Jumper JU5)

2

SHUNT POSITION

DVDD PIN CONNECTION

DVDD POWER

I C COMMUNICATION

1-2*

2-3

3.3V

On-board

DVDD PCB pad

User supplied (DVDD range: 3.3V to 5.5V**)

User supplied (DVDD range: 2.7V to 5.5V)

User supplied***

*Default position.

2

**Minimum DVDD is limited to 3.3V by the USB-to-I C interface circuit 3.3V logic level.

***Disconnect the USB cable from the EV kit.

2

Table 2. Slave Address Description

(Jumper JU6)

Table 3. User-Supplied I C Interface

USER-SUPPLIED

SIGNAL

EV KIT PCB PAD

SIGNAL

MAX9591 ADDRESS

(HEX)

SHUNT

POSITION

A0 PIN

CONNECTION

2

SDA

SCL

GPO

I C data

SDA

SCL

2

WRITE

0xE8

READ

0xE9

0xEB

0xED

0xEF

I C clock

1-2*

GND

DVDD

SCL

Control signal

STD_REG

BANK_SEL

1-3

0xEA

0xEC

0xEE

1-4

1-5

Signal ground

return

GND

DGND

SDA

*Default position.

_______________________________________________________________________________________

7

MAX9591 Evaluation Kit

Evluates:0/MAX591

Figure 3a. MAX9591 EV Kit Schematic—Application Circuit (Sheet 1 of 2)

8

_______________________________________________________________________________________

MAX9591 Evaluation Kit

Evluates:0/MAX591

2

Figure 3b. MAX9591 EV Kit Schematic—USB-to-I C Circuit (Sheet 2 of 2)

_______________________________________________________________________________________

9

MAX9591 Evaluation Kit

Figure 4. MAX9591 EV Kit Component Placement Guide—Component Side

Evluates:0/MAX591

Figure 5. MAX9591 EV Kit PCB Layout—Component Side

10 ______________________________________________________________________________________

MAX9591 Evaluation Kit

Evluates:0/MAX591

Figure 6. MAX9591 EV Kit PCB Layout—Solder Side

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 ____________________ 11

is a registered trademark of Maxim Integrated Products, Inc.


型号：	MAX9591EVKIT
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	Fully Assembled and Tested
文件：	总11页 (文件大小：977K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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