Datasheet

MAX1290/MAX1292
400ksps, +5V, 8-/4-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
_______________________________________________________________________________________ 7
2.48
2.49
2.51
2.50
2.52
2.53
INTERNAL REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX1290/2 toc10
V
DD
(V)
V
REF
(V)
4.50 5.004.75 5.25 5.50
2.48
2.49
2.51
2.50
2.52
2.53
-40 10-15 35 60 85
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1290/2 toc 11
TEMPERATURE (°C)
V
REF
(V)
-1.0
0
-0.5
0.5
1.0
OFFSET ERROR vs. SUPPLY VOLTAGE
MAX1290/2 toc12
V
DD
(V)
OFFSET ERROR (LSB)
4.50 5.004.75 5.25 5.50
-2
-1
0
1
2
OFFSET ERROR vs. TEMPERATURE
MAX1290/2 toc13
TEMPERATURE (°C)
OFFSET ERROR (LSB)
-40 35 60-15 10 85
-2
0
-1
1
2
GAIN ERROR vs. SUPPLY VOLTAGE
MAX1290/2 toc14
V
DD
(V)
GAIN ERROR (LSB)
4.50 5.004.75 5.25 5.50
0
0.5
1.0
1.5
2.0
GAIN ERROR vs. TEMPERATURE
MAX1290/2 toc15
TEMPERATURE (°C)
GAIN ERROR (LSB)
-40 35 60-15 10 85
50
150
100
200
250
LOGIC SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1290/2 toc16
V
DD
(V)
I
LOGIC
(µA)
4.50 5.004.75 5.25 5.50
Typical Operating Characteristics (continued)
(V
DD
= V
LOGIC
= +5V, V
REF
= +2.500V, f
CLK
= 7.6MHz, C
L
= 20pF, T
A
= +25°C, unless otherwise noted.)
0
50
150
100
200
250
-40 10-15 35 60 85
LOGIC SUPPLY CURRENT
vs. TEMPERATURE
MAX1290/2 toc 17
TEMPERATURE (°C)
I
LOGIC
(µA)
-140
-120
-100
-80
-60
-40
-20
0
20
0 400200 600 800 1000 1200
FFT PLOT
MAX1290/2 toc18
FREQUENCY (kHz)
AMPLITUDE (dB)
V
DD
= 5V
f
IN
= 50kHz
f
SAMPLE
= 400ksps