MAX1288EVKIT [MAXIM]

Evaluation Kit and Evaluation System for the MAX1286/MAX1288/MAX1086/MAX1088 ; 评估套件和评估系统MAX1286 / MAX1288 / MAX1086 / MAX1088\n


型号：	MAX1288EVKIT
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	Evaluation Kit and Evaluation System for the MAX1286/MAX1288/MAX1086/MAX1088 评估套件和评估系统MAX1286 / MAX1288 / MAX1086 / MAX1088\n
文件：	总6页 (文件大小：553K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

19-2251; Rev 0; 12/01

MAX1286 Evaluation Kit

and Evaluation System

General Description

Features

o Proven PC Board Layout

The MAX1286 evaluation system (EV system) is a com-

plete 12-bit, 2-channel data-acquisition system, consist-

ing of a MAX1286 evaluation kit (EV kit) and a Maxim

68HC16MODULE-DIP microcontroller (µC) module.

Order the complete EV system (MAX1286EVC16) for a

comprehensive evaluation of the MAX1286 using a per-

sonal computer (PC). Order the EV kit (MAX1286EVKIT)

separately if the 68HC16MODULE-DIP module has

already been purchased with a previous Maxim EV sys-

tem or for custom use in other µC-based systems. The

MAX1286 EV kit can also be used to evaluate the

MAX1288, MAX1086, and MAX1088.

o Windows 95/98^®Evaluation Software

o Convenient On-Board Test Points

o Fully Assembled and Tested

Ordering Information

PART

TEMP RANGE

0°C to +70°C

INTERFACE

User Supplied

Windows

MAX1286EVKIT

MAX1286EVC16

Note: The MAX1286 software is designed for use with the

complete EV system. It includes both a µC module and the

EV kit. If the Windows software will not be used, the EV kit

board can be purchased by itself, without the µC module.

Component List

MAX1286EVC16 System

PART

QTY

DESCRIPTION

MAX1286 EV kit

MAX1286EVKIT

68HC16MODULE-DIP

68HC16 µC module

MAX1286EVKIT

DESIGNATION

QTY

DESCRIPTION

DESIGNATION

QTY

DESCRIPTION

MAX6064AEUR-T (SOT23-3)

C1, C4

0.1µF ceramic capacitors (0603)

PC board, “MAX1286

Evaluation Kit”

100pF ceramic capacitors

(0603)

None

C2, C3

Open (0603)

3.5in software disk, “MAX1286

Evaluation Kit”

20 right-angle female

connector

Samtec SSW-120-02-S-D-RA

MAX1286 EV kit data sheet

(includes 68HC16MODULE-DIP

manual)

None

TP1

5-pin header

MAX1286 data sheet

MAX1286EKA-T (SOT23-8)

Windows 95/98 is a registered trademark of Microsoft Corp.

________________________________________________________________ Maxim Integrated Products

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.

MAX1286 Evaluation Kit

and Evaluation System

Quick Start

Detailed Description

Recommended Equipment

Before you begin, you will need the following equip-

ment:

MAX1286 Standalone EV Kit

The MAX1286EVKIT provides a proven PC board layout

to evaluate the MAX1286. It must be interfaced to

appropriate timing signals for proper operation.

Connect 5V to VDD and connect ground return to GND.

Refer to Figure 2, MAX1286 EV Kit Schematic, and the

MAX1286 data sheet for timing requirements.

• Maxim MAX1286EVC16 (MAX1286EVKIT board and

68HC16MODULE-DIP)

• A DC power supply (8V - 20V)

• An IBM-compatible PC with Windows 95/98

• A free standard serial port, preferably a 9-pin plug

MAX1286 EV System

The MAX1286EVC16 EV system operates from a user-

supplied 8V to 20V DC power supply. Windows 95/98

software interfaces to the EV system board through the

PC’s standard serial port. See the Quick Start section

for setup and operating instructions.

• A standard serial cable to connect the PCs standard

serial port to the 68HC16MODULE-DIP module

1) Carefully connect the boards by aligning the 40-pin

connector of the MAX1286 EV kit with the 40-pin

header of the 68HC16MODULE-DIP module. Gently

press them together. The two boards should be

flush against one another.

Detailed Description

of Software

The evaluation software’s main window is shown in

Figure 1. It controls the serial clock speed and sample

rate. It also displays the voltage and output code as

well as some statistics of the input signal. A separate

graph shows the data changing in real time. The

update rate is limited to about 10 samples per second,

due to COM port bandwidth limitations.

2) Ensure that the µC module SW1 switch is in the OFF

position.

3) Connect the 8V to 20V power supply to the µC mod-

ule terminal block located next to SW1. Observe the

polarity marked on the board.

4) Connect a standard serial cable from the computer’s

serial port to the µC module. If the PCs standard ser-

ial port has a 9-pin connector, use a straight-

through, 9-pin female-to-male cable. If the PCs only

available standard serial port has a 25-pin connec-

tor, a standard 25-pin to 9-pin adapter will be

required. The EV kit software checks the modem

status lines (CTS, DSR, DCD) to confirm that the cor-

rect port has been selected.

Part Selection

The part selection area allows the user to evaluate other

parts in the MAX1286 family. Use the pulldown menu to

select the MAX1286, MAX1288, MAX1086 or MAX1088.

The default part is the MAX1286.

Channel Selection

The channel selection area allows the user to select

AIN1 only, AIN2 only, or AIN1 and AIN2 by simply

checking the corresponding channel checkbox. The

current voltage and code is also displayed for each

active channel.

5) Install the MAX1286 EV kit software on your comput-

er by running the INSTALL.EXE program on the flop-

py disk. The program files are copied and icons are

created for them in the Windows Start Menu.

6) Start the MAX1286 program by opening its icon in

the Start Menu.

ADC to µC Sample Rate

The SPI™ SCLK frequency area allows the user to mod-

ify the ADC to µC sample rate. Use the pulldown menu

to select the desired SCLK frequency. The first two dig-

its are the divisor for the µCs internal clock. The next

floating point number is the corresponding SCLK fre-

quency. The voltage at the ADCs active channels is

digitized and stored in the µCs memory. The approxi-

mate ADC to µC sample rate is displayed on the right

side of the main window.

7) The Windows program will prompt you to connect

the µC module and turn its power on. Slide SW1 to

the ON position. When you click OK, the Windows

program will automatically download KIT1286.C16 to

the module.

8) Apply an input signal (0V to V

) between AIN1

REF

and GND. Observe the readout on the running

Windows program.

SPI is a trademark of Motorola, Inc.

_______________________________________________________________________________________

MAX1286 Evaluation Kit

and Evaluation System

Figure 1. MAX1286 Evaluation Software Main Window

µC to PC Data Rate

Reference Voltage

The evaluation software assumes a 4.096V reference

voltage, unless otherwise specified. To override the

4.096V reference value, cut JU1 and apply the new ref-

erence voltage to the lower connection of JU1. Then

type in the new reference voltage, without the volt unit,

The µC to PC data rate area allows the user to manually

or automatically read the digitized data stored in the

µC. To manually read the digitized data, press the

“Read” button. To configure the software to automati-

cally read, check the Read Every checkbox. The auto-

matic read rate can be changed by selecting the

desired amount of milliseconds in the pulldown menu.

The program waits the selected amount of milliseconds

before reading again. The approximate µC to PC data

rate is displayed on the right side of the main window.

and press the “Set V

” button. The EV kit software

REF

uses the value typed in the V

digital code to a voltage.

field to translate the

REF

Detailed Description

of Hardware

Statistics

The Minimum and Maximum fields in the statistics area

show the highest and lowest readings acquired. The

Average field shows a running mean. When reading

data manually by pressing the Read button, the

Average and RMS fields require approximately five

samples until they are accurately represented. The

Clear Statistics button resets the statistics.

The MAX1286 is a 2-channel, 12-bit serial ADC. When

the MAX1286EVKIT board is connected to the

68HC16MODULE-DIP module, power is provided by

the module. See Figure 2, MAX1286 EV Kit Schematic.

The MAX6064A voltage reference is included on the

MAX1286EVKIT board. It is a 4.096V voltage reference

with a temperature coefficient of 20ppm/°C. If another

voltage reference is desired, cut the JU1 trace to dis-

connect the MAX6064A from the MAX1286.

_______________________________________________________________________________________

MAX1286 Evaluation Kit

and Evaluation System

TP1

VDD

J1-1

J1-2

J1-3

J1-4

J1-37

J1-35

J1-38

SCLK

DOUT

0.1µF

AIN1

AIN2

GND

AIN1

AIN2

GND

MAX1286

100pF

CNVST

REF

100pF

VDD

OPEN

J1-7

J1-8

JU1

CUTHERE

VDD

0.1µF

OUT

MAX6064A

GND

Figure 2. MAX1286 EV Kit Schematic

Evaluating Other MAX1286

Family Devices

The MAX1286EVKIT board can also be used to evalu-

ate other parts in the MAX1286 family. The parts that

can be evaluated using the MAX1286EVKIT board are:

the MAX1286, MAX1288, MAX1086, or MAX1088. The

first two digits in the part number represent the resolu-

tion of the ADC. For example, the MAX1286 is a 12-bit

ADC and the MAX1086 is a 10-bit ADC. The MAX1286

and MAX1086 are two-channel parts, while the

MAX1288 and MAX1088 have one differential input.

_______________________________________________________________________________________

MAX1286 Evaluation Kit

and Evaluation System

1.0"

Figure 3. MAX1286 EV Kit Component Placement Guide—

Component Side

Figure 4. MAX1286 EV Kit PC Board Layout—Component Side

_______________________________________________________________________________________

MAX1286 Evaluation Kit

and Evaluation System

1.0"

Figure 5. MAX1286 EV Kit PC Board 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.

6 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Printed USA

is a registered trademark of Maxim Integrated Products.

MAX1288EVKIT [MAXIM]

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