MAX9660EVKIT+ [MAXIM]

Proven PCB Layout;


型号：	MAX9660EVKIT+
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	Proven PCB Layout PC
文件：	总11页 (文件大小：345K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

±9-4528; Rev 0; 3/09

MAX9660 Evaluation Kit

Evluates:MAX960

General Description

Features

The MAX9660 evaluation kit (EV kit) demonstrates the

MAX9660 programmable VCOM voltage buffer used for

VCOM backplane voltage calibration in TFT-LCD pan-

els, such as those found in high-resolution TVs, and

high-end monitors. A 7-bit digital-to-analog converter

(DAC) sinks current from an external resistor-divider to

set a VCOM reference voltage. An external resistor sets

the full-scale range of sinking current. The IC can drive

±±00mA continuous current and up to ±900mA peak

current. The desired DAC value can be stored in non-

volatile multiple one-time programmable (MOTP) mem-

ory and is recalled at each power-up. The EV kit oper-

ates from an 8V to 20V DC power supply.

o 7-Bit DAC for Setting VCOM Reference Voltage

o Integrated 30x Programmable Nonvolatile MOTP

Memory to Store VCOM Setting

o ±±00mA Continꢀoꢀu Cꢀrrent

o ±ꢁ00mA Peaꢂ Cꢀrrent

o 8V to 20V DC Power-Sꢀpply Operation

o USB-Powered USB-to-I C Interface Circꢀit

o Windowu 2000/XP- and Windowu Viuta

(32-Bit)-Compatible Software

o Lead(Pb)-Free and RoHS Compliant

o Proven PCB Layoꢀt

The MAX9660 EV kit features a USB-to-I C interface cir-

cuit. Windows 2000/XP - and Windows Vista -com-

patible software, with a graphical user interface (GUI),

available for exercising the MAX9660 features. The EV

o Fꢀlly Auuembled and Teuted

kit can also connect to a user-supplied I C interface

circuit for stand-alone MAX9660 operation.

Ordering Information

PART

TYPE

MAX9660EVKIT+

EV Kit

Windows, Windows XP, and Windows Vista are registered

trademarks of Microsoft Corp.

+Denotes lead(Pb)-free and RoHS compliant.

Component List

DESIGNATION QTY

DESCRIPTION

DESIGNATION QTY

DESCRIPTION

C±, C3–C8,

C±0, C±±, C±6,

C±7, C±8, C26,

0.±µF ±±0ꢀ, 25V X7R ceramic

capacitors (0603)

Murata GRM±88R7±E±04K or

TDK C±608X7R±E±04K

±µF ±±0ꢀ, ±0V X5R ceramic

capacitors (0603)

Murata GRM±88R6±A±05K or

TDK C±608X5R±A±05K

±4

C±9, C20, C22

C24

C27

±0µF ±±0ꢀ, ±0V X7R ceramic

capacitors (0805)

Murata GRM2±BR7±A±06K

±0µF ±±0ꢀ, 25V X5R ceramic

capacitor (±206)

Murata GRM3±CR6±E±06K

C2, C2±, C23,

C25

3300pF ±±0ꢀ, 50V X7R ceramic

capacitor (0603)

Murata GRM±88R7±H332K or

TDK C±608X7R±H332K

Not installed, ceramic capacitors

(0805)

C28, C29

D±

Green LED (0603)

Panasonic LNJ3±4G8TRA

±0pF ±5ꢀ, 50V C0G ceramic

capacitors (0603)

Murata GRM±885C±H±00J or

TDK C±608C0G±H±00J

Not installed, ferrite-bead

inductor—short (PC trace) (0603)

FB±

C±2, C±3

C±4, C±5

Not installed, dual-row (2 x 2)—short

(PC trace) 4-pin header, 0.±in

J±

22pF ±5ꢀ, 50V C0G ceramic

capacitors (0603)

Murata GRM±885C±H220J or

TDK C±608C0G±H220J

Not installed, 8-pin header, 0.±in

3-pin header

JU±

________________________________________________________________ Maxim Integrated Prodꢀctu

For pricing, delivery, and ordering information, pleaue contact Maxim Direct at ±-888-62ꢁ-4642,

or viuit Maxim’u webuite at www.maxim-ic.com.

MAX9660 Evaluation Kit

Component List (continued)

DESIGNATION QTY

DESCRIPTION

DESIGNATION QTY

DESCRIPTION

JU2

Not installed, 2-pin header

Programmable VCOM buffer

(8 TDFN-EP*)

Maxim MAX9660ATA+

(Top Mark: BLM)

Not installed, resistors (0603)

R± is short (PC trace) and R5 is open

U±

R±, R5

27Ω ±5ꢀ resistors (0603)

(lead-free only)

R2, R3

Low-power ±6-bit microcontroller

(68 QFN-EP*)

Maxim MAXQ2000-RAX+

±.5kΩ ±5ꢀ resistor (0603)

(lead-free only)

UART-to-USB converter (32 TQFP)

93C46 3-wire ±6-bit EEPROM (8 SO)

2.2kΩ ±5ꢀ resistors (0603)

(lead-free only)

R6, R9–R±2

Dual bidirectional level translator

(8 TDFN-EP*)

Maxim MAX3394EETA+

(Top Mark: APE)

±0kΩ ±5ꢀ resistor (0603)

(lead-free only)

220Ω ±5ꢀ resistor (0603)

(lead-free only)

3.3V regulator (5 SC70)

Maxim MAX85±±EXK33+

(Top Mark: AEI)

±0kΩ ±±ꢀ resistor (0603)

(lead-free only)

R±3

Evluates:MAX960

2.5V regulator (5 SC70)

Maxim MAX85±±EXK25+

(Top Mark: ADV)

69.8kΩ ±±ꢀ resistors (0603)

(lead-free only)

R±4, R±5

R±6

0Ω ±5ꢀ resistor (0805)

(lead-free only)

Y±

—

±6MHz crystal

6MHz crystal

TP±, TP2

USB

Not installed, Tektronix test points

USB type-B right-angle receptacle

Shunt (JU±)

PCB: MAX9660 EVALUATION KIT+

*EP = Exposed pad.

Component Suppliers

SUPPLIER

PHONE

WEBSITE

Murata Electronics North America, Inc.

Panasonic Corp.

770-436-±300

800-344-2±±2

847-803-6±00

www.murata-northamerica.com

www.panasonic.com

TDK Corp.

www.component.tdk.com

Note: Indicate that you are using the MAX9660 when contacting these component suppliers.

MAX9660 EV Kit Files

FILES

DESCRIPTION

Installs the EV kit files on your

computer

INSTALL.EXE

MAX9660.EXE

FTD2XX.INF

Application program

USB device driver file

UNINST.INI

Uninstalls the EV kit software

USB driver installation help file

USB_Driver_Help.PDF

_______________________________________________________________________________________

MAX9660 Evaluation Kit

Evluates:MAX960

6) Verify that a shunt is installed on jumper JU± pins

2-3 (on-board 3.3V digital power supply).

Quick Start

Required Equipment

MAX9660 EV kit (USB cable included)

7) Set the power supply to ±5V and disable the

power-supply output.

•

User-supplied Windows 2000/XP or Windows Vista

PC with a spare USB port

8) Connect the power-supply positive terminal to the

AVDD PCB pad and the negative terminal to the

GND PCB pad next to AVDD.

•

8V to 20V DC power supply at ±A

One digital voltmeter (DVM)

9) Connect the DVM negative terminal to the GND

PCB pad next to the VCOMOUT PCB pad.

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 ꢀnder-

lined refers to items from the Windows operating system.

±0) Connect the DVM positive terminal to the VCOMOUT

PCB pad.

±±) Connect the USB cable to the EV kit.

±2) Enable the power-supply output.

Procedure

The MAX9660 EV kit is fully assembled and tested.

Follow the steps below to verify board operation:

±3) Start the MAX9660 EV kit software by opening its

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

ware main window appears, as shown in Figure ±.

±) Visit www.maxim-ic.com/evꢂituoftware to down-

load the latest version of the EV kit software,

9660Rxx.ZIP. Save the EV kit software to a tempo-

rary folder and uncompress the ZIP file.

±4) Use the DVM to verify that the output voltage is close

to the voltage shown in the Oꢀtpꢀt (V) edit box.

±5) To power down the EV kit, first turn off the AVDD

supply and then disconnect the USB cable.

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 | Programu menu.

Detailed Description of Software

The MAX9660 EV kit GUI software provides a user inter-

face (Figure ±) to control the features of the MAX9660

VCOM voltage buffer. To start the EV kit software, dou-

ble-click the MAX9660 EV kit icon created during instal-

lation. The software has a demo mode that is available

by selecting Optionu | Demo Mode from the menu bar.

When in demo mode, all software communication to the

EV kit hardware is disabled and most of the software’s

GUI is functional. This feature enables a user to evalu-

ate the software without hardware connectivity.

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

board. A New Hardware Foꢀnd window pops up

when installing the USB driver for the first time. If a

window is not seen that is similar to the one

described above after 30s, remove the USB cable

from the board and reconnect it. Administrator priv-

ileges are required to install the USB device driver

on Windows.

4) Follow the directions of the Add New Hardware

Wizard to install the USB device driver. Choose the

Search for the beut driver for yoꢀr device option.

Specify the location of the device driver to be

C:\Program Fileu\MAXꢁ660 (default installation

directory) using the Browue button. During device

driver installation, Windows may 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 instal-

lation. Refer to the USB_Driver_Help.PDF document

included with the software for additional information.

The user interface is easy to operate; use the mouse, or

press the Tab and arrow keys to navigate the window.

Press the Enter key after modifying an edit box to

update the software. The status bar located at the bot-

tom-left of the GUI window displays EV kit connectivity

status, while the lower-right status bar displays the

device address.

The VCOM output voltage in the Oꢀtpꢀt (V) edit box is

calculated using the values in the Reference group

box’s AVDD (V), R±3 (ꢂOhm), R±4 (ꢂOhm), and R±5

(ꢂOhm) edit boxes. The edit-box values in the

Reference group box MUST be correct for the soft-

ware’s VCOM output voltage calculation to be correct.

5) Once the software and hardware installation is com-

plete, disconnect the USB cable from the EV kit.

_______________________________________________________________________________________

MAX9660 Evaluation Kit

Evluates:MAX960

Figure ±. MAX9660 Evaluation Software Main Window

Upon startup, the DAC is set to the last value stored in

the MOTP register. To modify the DAC output or the

MOTP register setting, click on the DAC or MOTP radio

button, respectively, in the Regiuter group box and

perform one of the following in the VCOM group box:

VCOM Voltage Calculation

The VCOM voltage is calculated using an on-board

resistor-divider (R±4 and R±5), a resistor (R±3) that sets

the full-scale sink current, AVDD voltage, and the deci-

mal DAC code (CODE) as follows:

±) Move the scrollbar, or

⎛

⎞

R±5

R±4+R±5

CODE+±

R±4

20×R±3

⎛

⎞

⎛

⎞

⎛

⎞

2) Type a register value directly into the Reg Valꢀe

−

⎟

AVDD

VCOM

⎜

⎝

⎟

⎠

⎜

⎝

⎜

⎝

⎟

⎠

⎜

⎟

⎠

±28

⎝

⎠

edit box (7-bit decimal equivalent), or

3) Type in the desired output voltage in the Oꢀtpꢀt (V)

edit box. The software uses a register value that

generates a voltage closest to the desired voltage

value.

where CODE ranges from 0 to ±27.

The VCOM voltage can be measured across the

VCOMOUT and GND PCB pads.

Press the Write button to update the MAX9660 IC with

the entered register value. Data written to the DAC is

volatile. Data can be written 30x to the nonvolatile

MOTP register. The factory-default MOTP register set-

ting is 64.

Advanced User Interface

A serial interface can be used by advanced users by

selecting Optionu | Interface (Advanced Uueru) from

the menu bar.

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

Press the Hꢀnt for active liuteneru button and select the

MAX9660 slave address 0xꢁE from the Target Device

Addreuu: combo box. In the General commandu tab

sheet, select the S - SMBꢀuSendByte(addr,cmd) item

in the drop-down list. Enter the desired hexadecimal

data values into the Command byte: combo box and

press the Execꢀte button.

The Optionu menu item provides access to an

advanced 2-wire interface and demo mode. The Help

menu item provides help and general information about

the EV kit software. The File menu item provides the

option to exit the EV kit software.

_______________________________________________________________________________________

MAX9660 Evaluation Kit

Evluates:MAX960

Figure 2. Advanced I C User Interface Window (2-Wire Interface Tab)

ing current. The IC can drive ±±00mA continuous cur-

rent and up to ±900mA peak current. The desired DAC

value can be stored in nonvolatile MOTP memory and

is recalled at each power-up. The EV kit operates from

an 8V to 20V DC power supply that supplies up to ±A.

Detailed Description of Hardware

The MAX9660 evaluation kit (EV kit) demonstrates the

MAX9660 programmable VCOM voltage buffer in an 8-

pin TDFN surface-mount package with an exposed

pad. EV kit applications include e-paper display pan-

els, VCOM backplane voltage calibration in TFT-LCD

panels, such as those found in high-resolution TVs and

high-end monitors. A 7-bit digital-to-analog converter

(DAC) sinks current from an external resistor-divider

(R±4 and R±5) to set a VCOM reference voltage. An

external resistor (R±3) sets the full-scale range of sink-

The MAX9660 EV kit features a USB-to-I C interface cir-

cuit using Maxim’s MAXQ2000 microcontroller and

MAX3394E level translator. The interface circuit pro-

vides 3.3V to the digital DVDD input from the USB

power. The EV kit can also connect to a user-supplied

I C interface circuit for stand-alone MAX9660 operation.

_______________________________________________________________________________________

MAX9660 Evaluation Kit

±) Disconnect the USB cable from the EV kit.

Digital Supply Configuration

The MAX9660 EV kit provides two options to power the

MAX9660 digital supply DVDD. DVDD can operate

2) Cut open header J± shorting traces on the PCB

bottom layer.

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

3) Move jumper JU± shunt to pins ±-2 (user-supplied

digital power supply).

interface circuit or from a user-supplied 2.5V to 3.6V

DC power supply connected across the DIN and

DGND PCB pads. See Table ± to configure DVDD

using jumper JU±.

4) Connect the positive terminal of a user-supplied

2.5V to 3.6V DC power supply to the DIN PCB pad

and the negative terminal to the nearby DGND PCB

pad.

Stand-Alone User-Supplied I C

Communication

5) Remove SDA and SCL pullup resistors R±± and

R±2 if not needed.

The MAX9660 EV kit can be used in stand-alone opera-

tion to interface with a user’s I C system without using a

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

PC. In stand-alone operation, I C communication oper-

the EV kit PCB pads, as shown in Table 2.

ates from 2.5V to 3.6V. To use the MAX9660 EV kit with

a user-supplied I C interface, perform the following

steps:

Table ±. Digital Sꢀpply Configꢀration (JU±)

Evluates:MAX960

SHUNT POSITION

DVDD PIN CONNECTION

DVDD POWER

I C COMMUNICATION

User-supplied

DVDD range: 3.3V to 3.6V**

1-2

DIN PCB pad

On-board

User-supplied

DVDD range: 2.5V to 3.6V

1-2

DIN PCB pad

+3.3V bus

User-supplied***

On-board

2-3*

On-board

*Default position.

**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.

Table 2. Uuer-Sꢀpplied I C Interface

USER-SUPPLIED

SIGNAL

EV KIT PCB

PAD

SIGNAL

DVDD

SDA

Digital supply

DIN

SDA

I C data

SCL

I C clock

SCL

GND

Signal ground return

DGND

_______________________________________________________________________________________

MAX9660 Evaluation Kit

Evluates:MAX960

Figure 3. MAX9660 EV Kit Schematic—VCOM Buffer Circuit

_______________________________________________________________________________________

MAX9660 Evaluation Kit

Evluates:MAX960

Figure 4. MAX9660 EV Kit Schematic—USB-to-I C Circuit

_______________________________________________________________________________________

MAX9660 Evaluation Kit

Evluates:MAX960

Figure 5. MAX9660 EV Kit Component Placement Guide—Component Side

_______________________________________________________________________________________

ꢁ

MAX9660 Evaluation Kit

Evluates:MAX960

Figure 6. MAX9660 EV Kit PCB Layout—Component Side

±0 ______________________________________________________________________________________

MAX9660 Evaluation Kit

Evluates:MAX960

Figure 7. MAX9660 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 ____________________ ±±

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

MAX9660EVKIT+ [MAXIM]

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