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MAX1280EVKIT

P1-P3P4-P6P7-P7
Evaluate: MAX1280
Measuring Supply Current
Power-supply current can be monitored by measuring
the voltage across resistor R9 (for VDD1) or R10
(VDD2). These resistors are 10Ω ±1%, so every 0.001V
across R9 represents 100µA of supply current.
Troubleshooting
Problem: No output measurement. System seems to
report zero voltage or fails to make a measurement.
1) Check VDD1 and VDD2 supply voltages.
2) Check the 2.5V reference voltage using a DVM.
3) Verify with an oscilloscope that the conversion-start
signal is being strobed.
4) Verify that SHDN is being driven high.
Problem: Measurements are erratic, unstable; poor
accuracy.
1) Check the reference voltage using a DVM.
2) Use an oscilloscope to check for noise. When prob-
ing for noise, keep the oscilloscope ground return
lead as short as possible, preferably less than 1/2in
(10mm).
MAX1280 Evaluation Kit/Evaluation System
4 _______________________________________________________________________________________
MAX1280
U1
R1
300Ω
C1
0.01µF
1
CHO
CHO
20
V
DD1
R2
300Ω
C2
0.01µF
2
CH1
CH1
19
V
DD2
R3
300Ω
C3
0.01µF
3
CH2
CH2
18
SCLK
R4
300Ω
C4
0.01µF
4
CH3
CH3
17
R5
300Ω
C5
0.01µF
5
CH4
CH4
16
DIN
R6
300Ω
C6
0.01µF
6
CH5
CH5
15
SSTRB
R7
300Ω
C7
0.01µF
7
CH6
CH6
14
DOUT
R8
300Ω
C8
0.01µF
8
CH7
CH7
13
GND
9
COM
O
12
REFADJ
10
11
REF
21
3
JU2
VDD1
JU1
2
1
SHDN
CS
SHDN
J1-7
C13
0.1µF
R10
10Ω
1%
C14
10µF
10V
TP1-7
J1-8
VDD2
C11
0.1µF
R9
10Ω
1%
C12
10µF
10V
VDD1
VDD1
TP1-6
J1-37
TP1-4
J1-36
TP1-5
J1-31
J1-38
TP1-3
J1-29
TP1-2
J1-35
REF
C9
4.7µF
10V
REFADJ
C10
0.01µF
GND
TP1-1
J1-1
J1-2
J1-3
J1-4
Figure 1. MAX1280 EV Kit Schematic
Evaluate: MAX1280
MAX1280 Evaluation Kit/Evaluation System
_______________________________________________________________________________________ 5
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RUG75
VWG75 FKDQQHOFRPPDQG
OGDE FKDQQHOELWPDVN
RUG75
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
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RUG75
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5HDG/RRS
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MVU3URFHVVB&KDQQHOB
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MVU3URFHVVB&KDQQHOB
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MVU3URFHVVB&KDQQHOB

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MVU3URFHVVB&KDQQHOB
MPS5HDG/RRS
Example 1. Reading All Channels with QSPI
Evaluate: MAX1280
MAX1280 Evaluation Kit/Evaluation System
6 _______________________________________________________________________________________
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VWG75 FKDQQHOFRPPDQG
&/563&5 GLVDEOH463,KDOWPRGHLQWHUUXSW
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52/'
52/'
52/'
MVU3URFHVVB&KDQQHOB
MPS5HDG/RRS
Example 2. Reading a Single Channel with QSPI
P1-P3P4-P6P7-P7

MAX1280EVKIT

Mfr. #:
Buy MAX1280EVKIT
Manufacturer:
Maxim Integrated
Description:
Data Conversion IC Development Tools MAX1280 Eval Kit
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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