MAX1403EVKIT Maxim Integrated Products, MAX1403EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX1403EVKIT
• Description: EVAL KIT FOR MAX1403
• Manufacturer: Maxim Integrated Products

Specifications of MAX1403EVKIT

• Number Of Adc's: 1
• Number Of Bits: 18
• Sampling Rate (per Second): 480
• Data Interface: Serial
• Inputs Per Adc: 6 Single Ended
• Input Range: ±VREF/gain
• Power (typ) @ Conditions: 16.9mW @ 480SPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: 0°C ~ 70°C
• Utilized Ic / Part: MAX1403
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8) When the software successfully establishes commu-
9) Apply input signals to the inputs labeled AIN1–AIN5,
The MAX1403 EV kit requires Rev. 1.1 of the Maxim
68HC11 Module ROM. Check the label on device U10
on the module; if it says “Rev. 1.0,” the device must be
replaced.
The Rev. 1.1 ROM is a 28-pin DIP that comes with the
EV kit. If it was omitted, contact the factory for a
replacement.
To install the new ROM, use the following procedure.
Use antistatic handling precautions. To reduce the risk
of ESD damage, gather all required materials and per-
form the installation at one sitting.
1) Slide the ON/OFF switch to the OFF position.
2) Using a flat-blade screwdriver, gently pry U10, the
3) Remove the REV 1.1 ROM from its antistatic pack-
4) Align the REV 1.1 ROM in the U10 socket pins.
Proceed to the regular Quick Start instructions.
The MAX1403 digitizes up to seven inputs. The various
program functions are grouped into windows that are
accessible from the Show menu on the main menu bar.
The main display shows the calculated input voltage
and raw A/D output code for each active channel.
Although there are nine input channels, only certain
configurations are allowed.
Select any single channel or one of the scanning
sequences from the Inputs menu. AIN 1-6 designates
an analog input between the AIN1 pin and the AIN6 pin.
CALOFF designates the signal between the CALOFF+
and CALOFF- pins. CALGAIN designates the signal
between the CALGAIN+ and CALGAIN- pins.
_________________________of Software
nication with the EV kit board, you will see a configu-
ration tool and some other windows. Verify that the
CLKIN and Reference Voltage settings are correct.
Close or minimize this dialog box.
at the bottom edge of the MAX1403 EV kit board.
AIN6 is analog common. Observe the readout on
the screen.
REV 1.0 ROM, out of its socket.
aging.
Observe correct polarity (the notch at the top of the
ROM). Verify that the pins are lined up with the
socket, and gently press the ROM into place.
Upgrading the 68HC11 Module
_______________________________________________________________________________________
Detailed Description
Main Display
The EV kit software assumes that CALOFF+ and
CALOFF- are grounded so that CALOFF measures 0V.
Similarly, the software assumes that CALGAIN+ is con-
nected to REFIN+ and CALGAIN- is connected to
REFIN- so that CALGAIN measures the reference volt-
age. These two points calibrate the code-to-voltage
translation function performed in the software.
The MAX1403 automatically triggers its measurements,
unless the FSYNC control bit is set. The EV kit software
communicates with the MAX1403 at intervals deter-
mined by the Update Every combo box. To halt this
automatic update, uncheck the Update Every checkbox
or change the Update Every to a value between 100ms
and 60,000ms.
Normally, the microcontroller collects new data as soon
as it becomes available by using the
an interrupt service routine. If the INT pin is not used as
an interrupt, then the MAX1403 must not be operated in
free-running mode. Check or uncheck the Use INT
Interrupt checkbox to configure the evaluation kit soft-
ware.
The Configuration Tool controls parameters that apply
to the entire EV kit. Like the other windows, the
Configuration Tool can be activated from the Show
menu of the main menu bar. The CLK control should
match the external ceramic resonator or crystal that
sets the master clock frequency. The VREF Reference
Voltage control tells the software what the reference
voltage is. This is used to convert the raw A/D output
codes into the corresponding input voltage to speed
user evaluation. The Data-Rate control determines how
often the MAX1403 performs a measurement. Some
data rates provide 16-bit, noise-free resolution when
used with the SINC
Sync control can be used to inhibit the MAX1403 from
performing its self-timed measurements. The Buffer
Inputs checkbox enables the internal input buffers. The
Burnout Test Currents checkbox enables two small
(0.1µA) current sources to provide an input stimulus.
When used with a transducer, these current sources
can be used to verify that the transducer has not failed
open or short circuit.
At the bottom of the window are input voltage-range
selection buttons. These buttons configure all input
channels for the same input voltage range. Although
the MAX1403 can be operated with three different input
ranges at the same time, the EV kit software supports
only a single range for all channels.
MAX1403 EV System
3
filter (discussed below). The Filter
Configuration Tool
INT pin to trigger
3