Datasheet

+2.7V to +5.25V, Low-Power, 8-Channel,
Serial 10-Bit ADCs
MAX148/MAX149
6
Typical Operating Characteristics
(V
DD
= 3.0V, VREF = 2.500V, f
SCLK
= 2.0MHz, C
LOAD
= 20pF, T
A
= +25NC, unless otherwise noted.)
INTEGRAL NONLINEARITY
vs. CODE
MAX148-MAX149 toc01
CODE
INL (LSB)
768512256
-0.10
-0.05
0
0.05
0.10
0 1024
INTEGRAL NONLINEARITY
vs. SUPPLY VOLTAGE
MAX148-MAX149 toc02
SUPPLY VOLTAGE (V)
INL (LSB)
4.754.253.753.252.75
0.025
0.050
0.075
0.100
0.125
0
2.25 5.25
MAX149
MAX148
INTEGRAL NONLINEARITY
vs. TEMPERATURE
MAX148-MAX149 toc03
TEMPERATURE (NC)
INL (LSB)
10060-20 20
0.025
0.050
0.075
0.100
0.125
0
-60 140
MAX149
MAX148
V
DD
= 2.7V
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX148-MAX149 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
4.754.253.753.252.75
0.75
1.00
1.25
1.50
1.75
2.00
0.50
2.25 5.25
RL = J
CODE = 1010101000
MAX149
MAX148
C
LOAD
= 50pF
C
LOAD
= 20pF
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX148-MAX149 toc05
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (FA)
4.754.253.753.252.75
0.5
1.0
1.5
2.0
2.5
3.0
0
2.25 5.25
FULL POWER-DOWN
MAX149 INTERNAL REFERENCE
VOLTAGE vs. SUPPLY VOLTAGE
MAX148-MAX149 toc06
SUPPLY VOLTAGE (V)
INTERNAL REFERENCE VOLTAGE (V)
4.754.253.753.252.75
2.4995
2.5000
2.5005
2.5010
2.5015
2.5020
2.4990
2.25 5.25
SUPPLY CURRENT vs. TEMPERATURE
MAX148-MAX149 toc07
TEMPERATURE (NC)
SUPPLY CURRENT (mA)
1006020-20
0.9
1.0
1.1
1.2
1.3
0.8
-60 140
R
L0AD
= J
CODE = 1010101000
MAX149
MAX148
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX148-MAX149 toc08
TEMPERATURE (NC)
SHUTDOWN CURRENT (mA)
1006020-20
0.4
0.8
1.2
1.6
2.0
0
-60 140
MAX149 INTERNAL REFERENCE
VOLTAGE vs. TEMPERATURE
MAX148-MAX149 toc09
TEMPERATURE (NC)
INTERNAL REFERENCE VOLTAGE (V)
1006020-20
2.495
2.496
2.497
2.498
2.499
2.500
2.501
2.494
-60 140
V
DD
= 5.25V
V
DD
= 2.7V
V
DD
= 3.6V