MAX1284EVKIT Maxim Integrated Products, MAX1284EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX1284EVKIT
• Description: EVALUATION KIT FOR MAX1284
• Manufacturer: Maxim Integrated Products

Specifications of MAX1284EVKIT

• Number Of Adc's: 1
• Number Of Bits: 12
• Sampling Rate (per Second): 400k
• Data Interface: Serial
• Inputs Per Adc: 1 Single Ended
• Input Range: 0 ~ 2.5 V
• Power (typ) @ Conditions: 13.75mW @ 400kSPS
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Utilized Ic / Part: MAX1284
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 1. MAX1284 EV Kit Schematic Diagram
The MAX1284 EV kit provides a proven PCB layout to
evaluate the MAX1284. It must be interfaced to appropri-
ate timing signals for proper operation. Connect +5V to
VDD, and connect the ground return to GND (Figure 1).
Refer to the MAX1284 data sheet for timing requirements.
The MAX1284 EV system operates from a user-sup-
plied +7VDC to +20VDC power supply. Windows
98/2000/XP-compatible software running on a PC inter-
faces to the EV system board through the computer’s
serial communications port. See the Quick Start section
for setup and operating instructions.
TP1-1
TP1-2
TP1-3
TP1-4
TP1-5
TP1-6
J1-28
J1-30
J1-33
J1-34
J1-35
J1-37
J1-38
J1-1
J1-2
J1-3
J1-4
J1-7
J1-8
MAX1284 Evaluation Kit/Evaluation System
VDD
UPSHDN
CS
DOUT
DOUT
SCLK
CS
SCLK
MAX1284 Stand-Alone EV Kit
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Detailed Description
VDD
DOUT
SHDN
GND
SCLK
CS
MAX1284 EV System
GND
GND
VDD
JU1
SHDN
3
JU2
2
3
6
8
7
1
SHDN
DOUT
SCLK
CS
MAX1284
J1-25
J1-26
J1-27
J1-29
J1-31
J1-32
U1
The evaluation software’s main window controls the
serial-clock speed and sample rate. It displays the volt-
age and output code as well as some statistics of the
input signal. A separate graph window shows the data
changing in real time. The update rate is limited to
about 10 samples per second, due to COM port band-
width limitations.
The Minimum and Maximum fields show the highest
and lowest readings acquired. The Average field shows
a running mean based on the equation a
(1 - k)(a
remove offset errors, first apply 0V to the active input
channel, clear statistics, acquire some samples, and then
check Tare. This average offset voltage will now be sub-
tracted from all subsequent measurements.
J1-36
J1-19
J1-20
J1-21
J1-22
J1-23
J1-24
GND
V
REF
AIN
DD
1
2
4
5
i - 1
J1-40
J1-13
J1-14
J1-15
J1-16
J1-17
J1-18
). The Clear button resets the statistics. To
Description of Software
C3
0.1µF
0.1µF
10µF
J1-39
J1-5
J1-6
J1-9
J1-10
J1-11
J1-12
C2
C5
C1
0.01µF
C4
4.7µF
R1
1k
(2.5V NOMINAL)
Statistics
VREF
i
AIN
= (k)(x
i
) +
3