Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
Typical Operating Characteristics
(VCC = VRS+ = 12V, VSENSE = 50mV for gain of 100V/V and 75mV for gain of 50V/V, TA = +25°C, unless otherwise noted.)
MAX4069
REFOUT vs. TEMPERATURE
MAX4069-72
toc09
TEMPERATURE (
°C)
REFOUT
(V)
100
75
25
50
0
-25
1.205
1.210
1.215
1.220
1.225
1.230
1.235
1.240
1.245
1.250
1.200
-50
125
REFOUT CONNECTED TO ADJ
SUPPLY CURRENT vs. TEMPERATURE
MAX4069-72
toc08
TEMPERATURE (
°C)
SUPPLY
CURRENT
(μ
A)
100
75
50
25
0
-25
60
80
100
120
140
160
180
40
-50
125
AV = 50V/V
VCC = 24V
VCC = 12V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4069-72
toc07
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(μ
A)
22
20
4
6
8
12 14 16
10
18
70
80
90
100
110
120
130
140
60
224
AV = 100V/V
MAX4071
MAX4070
MAX4069
MAX4072
TOTAL ERROR vs. TEMPERATURE
MAX4069-72
toc06
TEMPERATURE (
°C)
TOTAL
ERROR
(%)
100
75
50
25
0
-25
-1.0
-0.5
0
0.5
1.0
1.5
-1.5
-50
125
VSENSE = 50mV
AV = 100V/V
VCC = 24V
VCC = 12V
TOTAL ERROR vs. SUPPLY VOLTAGE
(VSENSE = 3mV)
MAX4069-72
toc05
SUPPLY VOLTAGE (V)
TOTAL
ERROR
(%)
18
14
610
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-2.0
222
AV = 100V/V
AV = 50V/V
TOTAL ERROR vs. SUPPLY VOLTAGE
MAX4069-72
toc04
SUPPLY VOLTAGE (V)
TOTAL
ERROR
(%)
22
20
16 18
8
10 12 14
6
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
424
VSENSE = 75mV
AV = 50V/V
VSENSE = 50mV
AV = 100V/V
(VOUT - VREF) vs. VSENSE
MAX4069-72
toc03
VSENSE (V)
(V
OUT
-
V
REF
)(V)
225
200
150 175
50 75 100 125
25
1
2
3
4
5
6
7
8
9
10
11
12
0
250
AV = 100V/V
AV = 50V/V
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4069-72
toc02
TEMPERATURE (
°C)
INPUT
OFFSET
VOLTAGE
(μ
V)
100
75
25
50
0
-25
-125
-100
-75
0
25
50
75
100
125
150
-150
-50
125
-50
-25
AV = 100V/V
INPUT OFFSET VOLTAGE DISTRIBUTION
MAX4069-72
toc01
VOS (
μV)
PERCENTAGE
OF
UNITS
(%)
160
120
80
40
0
-40
-80
-120
5
10
15
20
25
0
-160
200
-200
30
35
MAX4069–MAX4072
6
Maxim Integrated