Datasheet

MAX1270/MAX1271
Multirange, +5V, 8-Channel,
Serial 12-Bit ADCs
_______________________________________________________________________________________ 7
Typical Operating Characteristics
(Typical Operating Circuit, V
DD
= +5V; external reference mode, V
REF
= +4.096V; 4.7µF at REF; external clock, f
CLK
= 2MHz;
110ksps; T
A
= +25°C, unless otherwise noted.)
0
5
15
10
20
25
021 34567
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX1270/1 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.5
5.7
6.1
5.9
6.3
6.5
-40 10-15 35 60 85
SUPPLY CURRENT vs. TEMPERATURE
MAX1270/1 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
50
150
450
350
250
650
550
750
-40 10-15 35 60 85
STANDBY SUPPLY CURRENT
vs. TEMPERATURE
MAX1270/1 toc03
TEMPERATURE (°C)
STANDBY SUPPLY CURRENT (µA)
INTERNAL
REFERENCE
EXTERNAL
REFERENCE
50
70
110
90
130
150
-40 10-15 35 60 85
FULL POWER-DOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1270/1 toc04
TEMPERATURE (°C)
FULL POWER-DOWN SUPPLY CURRENT (µA)
INTERNAL
REFERENCE
EXTERNAL
REFERENCE
0.1
0.2
0.6
0.5
0.4
0.3
0.7
0.8
-40 10-15 35 60 85
CHANNEL-TO-CHANNEL GAIN-ERROR
MATCHING vs. TEMPERATURE
MAX1270/1 toc07
TEMPERATURE (°C)
CHANNEL-TO-CHANNEL GAIN-ERROR MATCHING (LSB)
BIPOLAR MODE
UNIPOLAR MODE
0.996
0.997
0.999
0.998
1.000
1.001
-40 10-15 35 60 85
NORMALIZED REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1270/1 toc05
TEMPERATURE (°C)
NORMALIZED REFERENCE VOLTAGE
0
0.05
0.25
0.20
0.15
0.10
0.30
0.35
-40 10-15 35 60 85
CHANNEL-TO-CHANNEL OFFSET-ERROR
MATCHING vs. TEMPERATURE
MAX1270/1 toc06
TEMPERATURE (°C)
CHANNEL-TO-CHANNEL OFFSET-ERROR MATCHING (LSB)
BIPOLAR MODE
UNIPOLAR MODE
-0.15
-0.10
0.05
0
-0.05
0.10
0.15
0 1638819 2457 3276 4095
INTEGRAL NONLINEARITY vs.
DIGITAL CODE
MAX1270/1 toc08
DIGITAL CODE
INTEGRAL NONLINEARITY (LSB)
-120
-100
-40
-60
-80
-20
0
0 20k10k 30k 40k 50k
FTT PLOT
MAX1270/1 toc09
FREQUENCY (Hz)
AMPLITUDE (dB)
f
IN
= 10kHz
f
SAMPLE
= 110ksps