REFIN, FB, OUT to GND ......................... -0.3V to (V
CC
+ 0.3V)
SHDN to GND .......................................................-0.3V to +20V
**As
per JEDEC51 Standard (multilayer board).
Package Thermal Characteristics
(Note 1)
SO-EP
Junction-to-Ambient Thermal Resistance (θ
JA
) ..........41°C/W
Junction-to-Case Thermal Resistance (θ
JC
) .................7°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
(V
CC
= 5V, V
RS+
= V
RS-
= +14V, V
SENSE
= (V
RS+
- V
RS-
) = 0V, V
SHDN
= V
GND
= 0V, V
REFIN
= V
CC
/2, R
L
= 100kΩ; for MAX9918,
A
V
= 90V/V, R2/R1 = 89kΩ/1kΩ; for MAX9920, A
V
= 20V/V, R2/R1 = 79kΩ/1kΩ; T
A
= -40°C to +125°C, unless otherwise noted. Typical
values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
V
RS+
= V
RS-
=
+14V, V
REFIN
= 0V
V
RS+
= V
RS-
=
-2V, V
REFIN
= 0V
V
RS+
= V
RS-
=
+14V, V
REFIN
= 0V
V
RS+
= V
RS-
=
-2V, V
REFIN
= 0V
V
RS+
= V
RS-
=
+14V, V
REFIN
= 0V
V
RS+
= V
RS-
=
-2V, V
REFIN
= 0V
T
A
= +25°C
T
A
= -40°C to
+125°C
T
A
= +25°C
T
A
= -40°C to
+125°C
T
A
= +25°C
T
A
= -40°C to
+125°C
T
A
= +25°C
T
A
= -40°C to
+125°C
T
A
= +25°C
T
A
= -40°C to
+125°C
T
A
= +25°C
T
A
= -40°C to
+125°C
±0.10
±0.48
±0.11
±0.18
±0.08
MIN
TYP
±0.14
MAX
±0.4
±0.7
±0.4
±1.3
±0.4
±0.9
±0.4
±1.0
±1.2
±3.0
±0.9
±3.5
mV
UNITS
Electrical Characteristics
MAX9918
Input Offset Voltage (Note 2)
V
OS
MAX9919_
MAX9920
www.maximintegrated.com
Maxim Integrated
│
2
MAX9918/MAX9919/MAX9920
-20V to +75V Input Range,
Precision Uni-/Bidirectional,
Current-Sense Amplifiers
(V
CC
= 5V, V
RS+
= V
RS-
= +14V, V
SENSE
= (V
RS+
- V
RS-
) = 0V, V
SHDN
= V
GND
= 0V, V
REFIN
= V
CC
/2, R
L
= 100kΩ; for MAX9918,
A
V
= 90V/V, R2/R1 = 89kΩ/1kΩ; for MAX9920, A
V
= 20V/V, R2/R1 = 79kΩ/1kΩ; T
A
= -40°C to +125°C, unless otherwise noted. Typical
values are at T
A
= +25°C.) (Note 1)
PARAMETERS
SYMBOL
MAX9918
Input Offset Voltage Drift
(Note 3)
V
OSD
MAX9919_
MAX9920
Common-Mode Range
Common-Mode Rejection Ratio
(Note 3)
V
CM
CONDITIONS
V
RS+
= V
RS-
= +14V
V
RS+
= V
RS-
= -2V
V
RS+
= V
RS-
= +14V
V
RS+
= V
RS-
= -2V
V
RS+
= V
RS-
= +14V
V
RS+
= V
RS-
= -2V
-20
80
96
72
86
±175
±250
0
-20V ≤ V
CM
≤ +75V, V
SHDN
= V
CC
= 5V
V
RS+
= V
RS-
= +14V, +75V, V
CC
= 0V
MAX9918,
MAX9919_
MAX9920
Full-Scale Sense Voltage
(Note 4)
Gain (Notes 2, 4)
V
SENSE
Inferred from gain
error test
MAX9918, MAX9920
G
MAX9919F
MAX9919N
Minimum Adjustable Gain
G
ADJ
MAX9918
MAX9920
Common mode
Differential
Common mode
Differential
MAX9918, MAX9919_
MAX9920
300
715
330
224
50
200
Adj
45
90
30
7.5
V/V
V/V
±8
±30
±30
µA
µA
µA
µA
kΩ
Ω
kΩ
Ω
mV
dB
-2V ≤ V
CM
≤ +14V
-20V ≤ V
CM
≤ +75V
-2V ≤ V
CM
≤ +14V
-20V ≤ V
CM
≤ +75V
T
A
= +25°C
T
A
= -40°C to +125°C
MIN
TYP
±1.2
±3.3
±1.8
±1.8
±2.4
±8.8
+75
V
µV/°C
MAX
UNITS
Electrical Characteristics (continued)
Inferred from CMRR tests
MAX9918,
MAX9919
MAX9920
CMRR
Input Bias Current
Input Offset Current
Input Leakage Current in
Shutdown
Input Leakage Current
I
RS+,
I
RS-
(I
RS+
- I
RS-
)
-20V ≤ V
CM
≤ +75V
Input Resistance
www.maximintegrated.com
Maxim Integrated
│
3
MAX9918/MAX9919/MAX9920
-20V to +75V Input Range,
Precision Uni-/Bidirectional,
Current-Sense Amplifiers
(V
CC
= 5V, V
RS+
= V
RS-
= +14V, V
SENSE
= (V
RS+
- V
RS-
) = 0V, V
SHDN
= V
GND
= 0V, V
REFIN
= V
CC
/2, R
L
= 100kΩ; for MAX9918,
A
V
= 90V/V, R2/R1 = 89kΩ/1kΩ; for MAX9920, A
V
= 20V/V, R2/R1 = 79kΩ/1kΩ; T
A
= -40°C to +125°C, unless otherwise noted. Typical
values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
±0.08
MAX
±0.6
±1.2
±0.02
±0.6
±1.0
±0.13
±0.45
±1.2
±0.10
±0.45
±0.9
±0.16
±0.6
±1.2
±0.11
±0.6
±1.0
±0.29
±1.0
±1.7
±0.24
±1.0
±1.7
3
12
3
10
44
41
0.1
Inferred from REFIN
CMRR test
MAX9918,
MAX9919_
MAX9920
0
0
V
CC
/2
V
CC
/2
V
CC
-
1.9
V
CC
-
2.4
10
40
10
40
mV
mV
%
UNITS
Electrical Characteristics (continued)
V
RS+
= V
RS-
=
+14V
MAX9918
T
A
= +25
°
C,
V
REFIN
= 0V
T
A
= -40
°
C to
+125
°
C,
V
REFIN
= 0V
V
RS+
= V
RS-
=
-2V,
V
REFIN
= 0V
T
A
= +25
°
C
T
A
= -40
°
C to
+125
°
C
T
A
= +25
°
C
T
A
= -40
°
C to
+125
°
C
T
A
= +25
°
C
T
A
= -40
°
C to
+125
°
C
T
A
= +25
°
C
T
A
= -40
°
C to
+125
°
C
T
A
= +25
°
C
T
A
= -40
°
C to
+125
°
C
T
A
= +25°C
T
A
= -40
°
C to
+125
°
C
V
RS+
= V
RS-
=
+14V,
V
REFIN
MAX9919F
Gain Error
(Note 2)
GE
= 0V
V
RS+
= V
RS-
=
-2V,
V
REFIN
= 0V
V
RS+
= V
RS-
=
+14V,
V
REFIN
= 0V
MAX9919N
V
RS+
= V
RS-
=
-2V,
V
REFIN
= 0V
V
RS+
= V
RS-
=
+14V,
V
REFIN
= 0V
MAX9920
V
RS+
= V
RS-
=
-2V,
V
REFIN
= 0V
T
A
= +25
°
C
T
A
= -40
°
C to
+125
°
C
Output-Voltage High (Note 4)
V
SENSE
= 200mV for
R
L
= 100kΩ to GND
MAX9918, MAX9919_,
V
CC
- V
OH
V
SENSE
= 400mV for
R
L
= 10kΩ to GND
MAX9920
V
OL
V
SENSE
= -200mV for R
= 100kΩ to V
L
CC
MAX9918, MAX9919_,
V
SENSE
= -400mV for
RL = 10kΩ to V
CC
MAX9920
OUT shorted to V
CC
OUT shorted to GND
Output-Voltage Low (Note 4)
Short-Circuit Current
Output Resistance
REFIN Voltage Range
I
SC
R
OUT
mA
Ω
V
www.maximintegrated.com
Maxim Integrated
│
4
MAX9918/MAX9919/MAX9920
-20V to +75V Input Range,
Precision Uni-/Bidirectional,
Current-Sense Amplifiers
(V
CC
= 5V, V
RS+
= V
RS-
= +14V, V
SENSE
= (V
RS+
- V
RS-
) = 0V, V
SHDN
= V
GND
= 0V, V
REFIN
= V
CC
/2, R
L
= 100kΩ; for MAX9918,
A
V
= 90V/V, R2/R1 = 89kΩ/1kΩ; for MAX9920, A
V
= 20V/V, R2/R1 = 79kΩ/1kΩ; T
A
= -40°C to +125°C, unless otherwise noted. Typical
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