4
Maxim Integrated
Dual 36V Op Amp for 18-Bit
SAR ADC Front-End
MAX9633
Typical Operating Characteristics
(VCC = +15V, VEE = -15V, VCM = 0V, outputs have RL = 10kI connected to VGND = 0V. Typical values are at TA = +25NC, unless
otherwise noted.)
VOS HISTOGRAM
MAX9633
toc01
VOS (V)
OCCURRENCES
(%)
180
100 140
-100 -60 -20 20 60
-140
5
10
15
20
25
30
35
40
45
50
0
-180
VOS DRIFT (V/°C)
FREQUENCY
(%)
0.5
0.4
0.2 0.3
-0.3 -0.2 -0.1 0 0.1
-0.4
5
10
15
20
25
30
35
40
45
50
0
-0.5
VOS DRIFT HISTOGRAM
MAX9633
toc02
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX9633
toc03
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(mA)
35
30
25
20
15
10
5
1
2
3
4
5
6
0
040
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
TA = 0°C
INPUT OFFSET VOLTAGE
vs. INPUT COMMON MODE
INPUT COMMON MODE (V)
V OS
(V)
10
5
-10
-5
0
25
30
35
40
45
50
55
60
20
-15
15
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
TA = 0°C
MAX9633
toc04
INPUT OFFSET VOLTAGE
vs. SUPPLY VOLTAGE
MAX9633
toc05
SUPPLY VOLTAGE (V)
V OS
(V)
30
20
10
25
30
35
40
45
50
55
60
20
040
TA = -40°C
TA = +25°C
TA = +85°C
TA = 0°C
TA = +125°C
BIAS CURRENT
vs. INPUT COMMON MODE
MAX9633
toc06
INPUT COMMON MODE (V)
BIAS
CURRENT
(nA)
10
5
0
-5
-10
32
34
36
38
40
42
44
46
48
50
30
-15
15
TA = -40°C
TA = +125°C
TA = 0°C
TA = +25°C
TA = +85°C
BIAS CURRENT vs. SUPPLY VOLTAGE
MAX9633
toc07
SUPPLY VOLTAGE (V)
35
30
20
25
10
15
5
040
BIAS
CURRENT
(nA)
32
34
36
38
40
42
44
46
48
50
30
TA = -40°C
TA = +125°C
TA = 0°C
TA = +25°C
TA = +85°C
MAX9633
toc08
120
100
-40 -20 0
40 60
20
80
-60
140
-140
-120
-100
-80
-60
-40
-20
-160
DC COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
0
TEMPERATURE (°C)
CMRR
(dB)
DC PSRR vs. TEMPERTURE
MAX9633
toc09
TEMPERATURE (°C)
PSRR
(dB)
100
75
25
50
0
-25
-140
-120
-100
-80
-60
-40
-20
0
-50
125