MAX1236EVKIT Maxim Integrated Products, MAX1236EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX1236EVKIT
• Description: EVAL KIT FOR MAX1236
• Manufacturer: Maxim Integrated Products

Specifications of MAX1236EVKIT

• Number Of Adc's: 1
• Number Of Bits: 12
• Sampling Rate (per Second): 94k
• Data Interface: Serial
• Inputs Per Adc: 4 Single or 2 Differential
• Input Range: ±VREF/2
• Power (typ) @ Conditions: 3.35mW @ 94kSPS
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Utilized Ic / Part: MAX1236
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Before you begin, the following equipment is needed:
• A fixed +5VDC power supply
• An IBM-compatible PC with Windows 95/98
• An available parallel port (DB-25 female connector on
• A standard 25-pin, straight-through male-to-female
1) Connect a cable from the computer’s parallel port
2) Install the MAX1236 EV kit software on your computer
3) Connect a +5VDC power supply between the 5V
4) Start the MAX1236 EV kit program by clicking its icon
5) Apply an analog input voltage (0 to V
6) The program automatically detects the MAX1236
The evaluation software’s main window (Figure 1) con-
trols the setup byte. It also displays the voltage and
output code of the input signal(s), depending on the
configuration of the MAX1236.
The Read ADC button manually reads the MAX1236
while using the current setup and configuration byte set-
tings. When the AutoRead checkbox is checked, the
software automatically reads the MAX1236 approxi-
mately every 300ms. AutoRead allows users to modify
the setup and configuration bytes on the fly without hav-
ing to manually press the Read ADC button each time.
The Setup Byte always begins with a start bit value of
one. The SEL2, SEL1, and SEL0 bits control the state
MAX1236 Evaluation Kit
2
back of PC)
cable to connect the computer’s parallel port to the
MAX1236 EV kit board
to the MAX1236 EV kit board. Use a 25-pin straight-
through, female-to-male cable.
by running the INSTALL.EXE program on the floppy
disk. The program files are copied and icons are cre-
ated in the Programs section within the START menu.
and the GND pads of the MAX1236 EV kit board.
in the Programs section within the START menu.
AIN0 and GND pads of the MAX1236 EV kit board.
EV kit board and displays 2-Wire Hardware
Detected in green. The AIN0 label automatically
displays the voltage applied to the pad labeled
AIN0 on the MAX1236 EV kit board.
_______________________________________________________________________________________
Recommended Equipment
Detailed Description
of Software
Quick Start
REF
Setup Byte
Procedure
) between the
Read ADC
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 MAX1236 data sheet for more
information on the SEL2, SEL1, and SEL0 bits within
the Setup 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 ana-
log input channels. The CS3 and CS2 bits are ignored
by the MAX1236. The SE/DIFF bit selects either single-
ended or differential mode. See the MAX1236 data
sheet for more information on the SCAN1, SCAN0,
CS3, CS2, CS1, and CS0 bits within the Config Byte.
The evaluation software assumes a +4.096V reference
voltage, unless otherwise specified. To override the
internal 4.096V reference value, ensure bit SEL2 equals
zero and bit SEL1 equals one 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 V
software uses the value typed in the V
late the digital code to a voltage.
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, and then press the
letter of the menu item you want. Most menu items have
one letter underlined, indicating their shortcut key.
Keyboard Navigation
Reference Voltage
ref
button. The EV kit
ref
Config Byte
field to trans-