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19-2583; Rev 0; 9/02
MAX1036 Evaluation Kit
General Description
The MAX1036 evaluation kit (EV kit) is designed to evaluate the MAX1036. The MAX1036 is an 8-bit four-channel (two-differential-channel) ADC with a 2-wire serial interface. The MAX1036 EV kit board supports three standard 2-wire serial interface speeds: standard mode (S-Mode), fast mode (F-Mode), and high-speed mode (HS-Mode); however, the software provided with this EV kit only supports standard mode. The provided Windows 95/98(R) software uses the parallel (printer) port of an IBM-compatible PC to emulate a processor with a 2-wire serial interface (S-Mode). The Windows software also provides a friendly graphical user interface (GUI) to exercise the features of the MAX1036 with control buttons and pulldown menus. Order the MAX1036EVKIT for comprehensive evaluation of the MAX1036, using a PC with an available parallel port. o Proven PC Board Layout o Windows 95/98 Evaluation Software o 2-Wire Serial Interface o Fully Assembled and Tested
Features
Evaluates: MAX1036
Ordering Information
PART MAX1036EVKIT TEMP RANGE 0C to +70C IC PACKAGE 8 SOT23
MAX1036 EV Kit Files
FILE INSTALL.EXE MAX1036.EXE FUNCTION Installs the EV kit files on your computer Application program
Component List
DESIGNATION C1-C4 QTY 4 DESCRIPTION 0.22F 10%, 10V X7R ceramic capacitors (0603) TDK C1608X7R1A224KT 100pF 5%, 50V COG ceramic capacitor (0603) TDK C1608C0G1H101JT 0.1F 10%, 16V X7R ceramic capacitors (0603) TDK C1608X7R1C104KT Zener diodes, Vz = 5.1V (3-pin SOT23) Diodes Inc. BZX84C5V1 Top mark KZ2/Z2 Male DB25 right-angle plug 14 1% resistors (0603) DESIGNATION R5, R7 R6, R8, R9, R13 R10, R12, R14, R16 R11, R15 U1 C6, C7 2 U2 None None None QTY 2 4 4 2 1 1 1 1 1 DESCRIPTION Open (1206) (not installed) 47k 5% resistors (1206) 100 5% resistors (1206) 4.7k 5% resistors (0603) MAX1036EKA (8-pin SOT23) Top mark: AAJE Logic inverter (14-pin SO), open drain 74HC05 PC board, MAX1036 EV kit 3.5in software disk, MAX1036 EV kit MAX1036 data sheet
C5
1
D1-D4
4
J1 R1-R4
1 4
Windows 95/98 is a registered trademark of Microsoft Corp. ________________________________________________________________ Maxim Integrated Products 1
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.
MAX1036 Evaluation Kit Evaluates: MAX1036
Component Suppliers
SUPPLIER Diodes Inc. TDK PHONE 805-446-4800 847-803-6100 WEBSITE www.diodes.com www.component.tdk.com
Note: Please indicate you are using the MAX1036 when contacting these component suppliers.
Quick Start
Recommended Equipment
Before you begin, the following equipment is needed: * MAX1036EVKIT * * * * A 5V DC power supply An IBM-compatible PC with Windows 95/98 An available parallel port (DB25 female connector on back of PC) A standard 25-pin, straight-through, male-to-female cable to connect the computer's parallel port to the MAX1036 EV kit board
Detailed Description of Software
The evaluation software's main window (Figure 1) controls the setup byte and config byte. It also displays the voltage and output code of the input signal(s), depending on the configuration of the MAX1036.
Read ADC
The Read ADC button manually reads the MAX1036 while using the current setup and configuration byte settings. When the AutoRead checkbox is checked, the software automatically reads the MAX1036 approximately every 300ms. AutoRead allows users to modify the setup and configuration bytes on-the-fly without having to manually press the Read ADC button each time.
Procedure
1) Connect a cable from the computer's parallel port to the MAX1036 EV kit board. Use a 25-pin straightthrough, female-to-male cable. 2) Install the MAX1036 EV kit software on your computer by running the INSTALL.EXE program on the floppy disk. The program files are copied and icons are created in the Programs section within the Start menu. 3) Connect a 5V DC power supply between the pads labeled +5 and GND on the MAX1036 EV kit board. 4) Apply an analog input voltage (0 to VREF) to the pad labeled AIN0 (with respect to the pad labeled GND) of the MAX1036 EV kit board. 5) Start the MAX1036 EV kit program by double clicking its icon located in the Programs section within the Start menu. 6) The program automatically detects the MAX1036 EV kit board and displays 2-Wire Hardware Detected in a green font. The AIN0 label (main window) should automatically display the voltage applied to the pad labeled AIN0 on the MAX1036 EV kit board.
Setup Byte
The Setup Byte always begins with a start-bit value of 1. The SEL2, SEL1, and SEL0 bits control the state of the reference. The CLK bit selects either internal clock or external clock mode. The UNI/BIP bit selects either unipolar or bipolar mode. Setting RST to zero resets the configuration register. The setup register remains unchanged. The X Don't Care bit can be ignored. Refer to the MAX1036 data sheet for more information on the SEL2, SEL1, and SEL0 bits within the Setup Byte.
Configuration Byte
The Config Byte always begins with a start-bit value of zero. The SCAN1 and SCAN0 bits select the scanning mode. The CS1 and CS0 bits select one of the four analog input channels. The CS2 and CS3 bits are ignored. The SE/DIFF bit selects either single-ended or differential mode. Refer to the MAX1036 data sheet for more information on the SCAN1, SCAN0, CS3, CS2, CS1, and CS0 bits within the Config Byte.
Reference Voltage
The evaluation software assumes a 4.096V reference voltage, unless otherwise specified. To override the internal 4.096V reference value, ensure bit SEL2 equals
2
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MAX1036 Evaluation Kit
zero and bit SEL1 equals 1 within the Setup Byte. Then, apply the new reference voltage at the VREF pad on the board, type in the new reference voltage, without the volt unit, and press the Set Vref button. The EV kit software uses the value typed in the Vref field to translate the digital code to a voltage.
Detailed Description of Hardware
The MAX1036 is a four-channel (two-differential-channel) 8-bit ADC with a 2-wire serial interface. The open-collector inverter (U2) interfaces the PC parallel port to the 2-wire serial interface. U2 and the associated circuitry are only required when interfacing to the parallel port. Power the MAX1036 EV kit from a 5V DC power supply.
Evaluates: MAX1036
Keyboard Navigation
When you type on the keyboard, the system must know which control should receive the keystrokes. Press the TAB key to move the keyboard's focus from one control to the next. The focused control is indicated by a dotted outline. SHIFT+TAB moves the focus to the previously focused control. Buttons respond to the keyboard's SPACE bar. Some controls respond to the keyboard's UP and DOWN arrow keys. Activate the program's menu bar by pressing the F10 key, then press the letter of the menu item you want. Most menu items have one letter underlined, indicating their shortcut key.
User-Supplied 2-Wire Interface
The MAX1036 EV kit provides a proven PC board layout and software to evaluate the features of the MAX1036. The Windows software only supports a 2-wire serial interface in S-Mode. To evaluate the MAX1036 with a usersupplied 2-wire serial interface in F-Mode or HS-Mode, do the following: 1) Disconnect the MAX1036 EV kit from the PC parallel port. 2) Install 3k resistors at locations R5 and R7. (This resistor value may require optimization for each system.) 3) Connect the 2-wire bus to the SDA, SCL, and GND pads. 4) Refer to the MAX 1036 data sheet to ensure all timing specifications are met.
Figure 1. MAX1036 Evaluation Software's Main Window _______________________________________________________________________________________ 3
MAX1036 Evaluation Kit Evaluates: MAX1036
+5V SDA SDA 6 SDA U1 MAX1036 SCL SCL AIN1 2 C2 0.22F 3 C3 0.22F 7 GND 4 C4 0.22F 5 SCL AIN0 1 C1 0.22F VDD 8 C5 100pF C6 0.1F R1 14 1%
GND
GND
AINO
R2 14 1%
AIN1
R3 14 1%
AIN2
AIN2
R4 14 1%
AIN3
AIN3/VREF
VREF GND
+5 +5 GND
Figure 2. MAX1036 EV Kit Schematic (Sheet 1 of 2)
4
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MAX1036 Evaluation Kit Evaluates: MAX1036
J1-5 J1-13 J1-18 J1-19 J1-20 J1-21 1 J1-22 J1-23 J1-24 J1-25 J1-DB25 CONNECTOR J1-3 3 D2 1 R11 4.7k R12 100 SDA 3 U2-B 74HC05 4 +5V U2-A 74HC05 +5V 1 R6 47k R5 OPEN +5V
R10 100 J1-11 3 D1
R9 47k 2
J1-1 J1-4 J1-6 J1-7 J1-8 J1-9 J1-17 J1-16 J1-15 J1-14 J1-10
N.C. N.C. N.C. N.C. N.C.
+5V U2-C 74HC05 +5V 5 R8 47k R7 OPEN +5V
R14 100 J1-12 3 1 D3
R13 47k 6
N.C. N.C. N.C. J1-2
R16 100 3 1 D4
SCL 9 R15 4.7k U2-D 74HC05 10 8 U2-E 74HC05 11 U2-F 74HC05 14 13 7 12 C7 0.1F +5V
N.C. N.C. N.C.
Figure 2. MAX1036 EV Kit Schematic (Sheet 2 of 2)
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5
MAX1036 Evaluation Kit Evaluates: MAX1036
1.0"
1.0"
Figure 3. MAX1036 EV Kit Component Placement Guide-- Component Side
Figure 4. MAX1036 EV Kit PC Board Layout--Component Side
1.0"
Figure 5. MAX1036 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 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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