Datasheet

RSP, RSN to GND Voltage Continuous ................-0.3V to +30V
RSP, RSN to GND Load-Dump Voltage Duration
(V
BAT
= 40V) with Typical Application Circuit ...................... 1s
RSP, RSN to GND Reverse-Battery Voltage Duration
(V
BAT
= -20V) with Typical Application Circuit ......Continuous
Differential Input Voltage (RSP - RSN) ..............................±0.3V
V
CC
to GND .........................................................-0.3V to +6.0V
OUT to GND ............................................. -0.3V to (V
CC
+ 0.3V)
Output Short Circuit to Ground..................................Continuous
Continuous Input Current into RSN, RSP* .......................±50mA
Continuous Input Current into OUT* ................................±25mA
Thermal Limits (Note 1)
Continuous Power Dissipation (T
A
= +70°C) Multiple-Layer PCB
5 SC70 (derate 3.1mW/°C above +70°C) ................246.9mW
θ
JA
.............................................................................324°C/W
θ
JC
.............................................................................115°C/W
Operating Temperature Range ......................... -40°C to +125°C
Junction Temperature ...................................................... +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) ....................................... +260°C
(V
CC
= 5V, V
BAT
= V
RS+
= 12V, V
SENSE
= (V
RS+
- V
RS-
) = 0V, R
RSP
= R
RSN
= 500Ω, R
OUT
= 10kΩ, T
A
= -40°C to +125°C. Typical
values are at T
A
= +25°C, unless otherwise noted. See the Typical Application Circuit.) (Note 2)
*Junction temperature rating due to power dissipation must also be observed.
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC CHARACTERISTICS
Input Common-Mode Voltage
Range
V
RSP
,
V
RSN
Inferred from CMRR test 4 28 V
Supply Voltage Range V
CC
Inferred from PSRR test 2.7 5.5 V
Input Offset Voltage (Note 3) V
OS
T
A
= +25°C ±0.3 ±1.2
mV
T
A
= -40°C to +125°C ±1.6
Common-Mode Rejection
Ratio
CMRR V
BAT
= +4V to +28V
T
A
= +25°C 100 120
dB
T
A
= +125°C 90
Power-Supply Rejection Ratio PSRR V
CC
= +2.7V to +5.5V 90 120 dB
Quiescent Supply Current I
CC
V
CC
= 5V 20 55 µA
Input Bias Current (Note 4) I
B+
, I
B-
T
A
= +25°C 0.8 2 5.6
µA
T
A
= -40°C to +125°C 0.65 6.5
Input Bias Current
Mismatch
∆I
B
/I
B
2 x (I
B+
- I
B-
)/(I
B+
+ I
B-
)
T
A
= +25°C ±1 ±12 %
T
A
= -40°C to
+125°C
±15 %
Input Current in Shutdown
I
RSP
+
I
RSN
T
A
= +25°C, V
CC
= 0V 0.01 1
µA
T
A
= -40°C to +125°C, V
CC
= 0V 10
Voltage Gain Gain = R
OUT
/R
RSP
20 V/V
Voltage Gain Error (Notes 3, 5)
T
A
= +25°C ±0.2 ±1.5
%
T
A
= -40°C to +125°C ±2.0
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Maxim Integrated │ 2
MAX9937 Current-Sense Amplier with
Reverse-Battery Protection
Electrical Characteristics
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.
Absolute Maximum Ratings