MAX1241EVKIT Maxim Integrated Products, MAX1241EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX1241EVKIT
• Description: EVALUATION KIT FOR MAX1241
• Manufacturer: Maxim Integrated Products

Specifications of MAX1241EVKIT

• Number Of Adc's: 1
• Number Of Bits: 12
• Sampling Rate (per Second): 73k
• Data Interface: Serial
• Inputs Per Adc: 1 Single Ended
• Input Range: 0 ~ VREF
• Power (typ) @ Conditions: 3mW @ 73kSPS
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Utilized Ic / Part: MAX1240, MAX1241
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

5) Connect a cable from the computer’s serial port to
6) Start the MAX1241 software on the IBM PC by set-
7) The program will ask which port the µC module is
8) Turn on the power for the µC module. The module
9) Download and run the RAM resident program on
10) Press ALT+C to switch to the control-panel screen
11) Apply input signals to AIN on the MAX1241 EV kit
12) Before turning off power to the MAX1241 EV kit, exit
The MAX1241 EV kit provides a proven PC board layout
to facilitate evaluation of the MAX1241. It must be inter-
faced to appropriate timing signals for proper opera-
tion. Refer to the MAX1241 data sheet for timing
requirements.
To evaluate the MAX1240, turn off power to the kit,
remove the MAX1241, and replace it with a
MAX1240BCPA. Select the internal reference by open-
ing JU2 and closing JU1.
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MAX1241 Evaluation System/Evaluation Kit
2
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the µC module. If using a 9-pin serial port, use a
straight-through, 9-pin, female-to-male cable. If the
only available serial port uses a 25-pin connector, a
standard 25-pin to 9-pin adapter is required. The
EV kit software checks the modem status lines
(CTS, DSR, DCD) to confirm that the correct port
has been selected.
ting the current directory to match the directory
containing the Maxim programs, then type the pro-
gram name “MAX1241”. Do not turn off or discon-
nect the µC module while the program is running; if
you do, you will have to restart the program.
connected to. Press the space bar until the correct
PC serial port is highlighted, then press ENTER.
The MAX1241 program will be in terminal-emulation
mode.
will display its logon banner and test its RAM.
the µC module by pressing ALT+L (i.e., hold down
the ALT key as you strike the L key). The program
prompts you for the file name. Press the ENTER key
to download and run the file.
after the RAM resident program has been success-
fully downloaded.
board. Observe the readout on the screen. Table 2
lists the commands that are available from the con-
trol-panel screen.
the program by pressing ALT+X.
MAX1241 Stand-Alone EV Kit
Detailed Description
Evaluating the MAX1240
Systems that have both 3V and 5V logic must provide
level translation for the MAX1241’s data output. No level
translation is necessary on the inputs.
The MAX872 is a 2.5V reference. To supply a different
external reference, open JU2 and apply the reference
voltage between VREF and GND. Refer to the MAX1241
data sheet for reference voltage requirements.
The software allows the user to control the throughput
rate, power-up delay, and reference-range setting. It
also provides for data logging. Refer to Table 2 for a
complete listing of the available features.
The EV kit software program ( KIT1241.L11 ) loaded into
the 68L11D module operates at a 6.7ksps throughput.
For faster throughput, download the program
FAST1241.L11 at step 9 of the MAX1241 EV System
Quick Start section. This program has a throughput rate
of approximately 14ksps.
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Table 1. Jumper Settings
JUMPER
JU1
JU2
Changing the Reference Voltage
Systems Using 3V and 5V Logic
STATE
(default)
(default)
Closed
Closed
Open
Open
Detailed Description
The µC module controls the
state of SHDN.
Force SHDN to float. Disable
internal reference (MAX1240).
Drive VREF with on-board
MAX872 reference.
Disconnect MAX872 refer-
ence. Use internal reference
(MAX1240) or drive VREF
pad with a user-supplied
reference.
FUNCTION