Datasheet

76V, High-Side, Current-Sense Amplifiers with
Voltage Output
ABSOLUTE MAXIMUM RATINGS
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
to GND............................................................-0.3V to +80V
RS+, RS- to GND....................................................-0.3V to +80V
OUT to GND.............-0.3V to the lesser of +18V or (V
CC
+ 0.3V)
REF1A, REF1B to GND
(MAX4081 Only)....-0.3V to the lesser of +18V or (V
CC
+ 0.3V)
Output Short Circuit to GND.......................................Continuous
Differential Input Voltage (V
RS
+ - V
RS
-)...............................±80V
Current into Any Pin..........................................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
DC ELECTRICAL CHARACTERISTICS
(V
CC
= V
RS+
= 4.5V to 76V, V
REF1A
= V
REF1B
= 5V (MAX4081 only), V
SENSE
= (V
RS+
- V
RS-
) = 0V, R
LOAD
= 100kΩ, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Notes 1, 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range V
CC
Inferred from PSRR test 4.5 76 V
Common-Mode Range C
MVR
Inferred from CMRR test (Note 3) 4.5 76 V
MAX4080 75 190
Supply Current I
CC
V
CC
= V
RS+
= 76V,
no load
MAX4081 103 190
µA
Leakage Current I
RS+
, I
RS-
V
CC
= 0V, V
RS+
= 76V 0.01 2 µA
Input Bias Current I
RS+
, I
RS-
V
CC
= V
RS+
= 76V 5 12 µA
MAX4080F/MAX4081F ±1000
MAX4080T/MAX4081T ±250
Full-Scale Sense Voltage (Note 4) V
SENSE
MAX4080S/MAX4081S ±100
mV
MAX4080F/MAX4081F 5
MAX4080T/MAX4081T 20Gain A
V
MAX4080S/MAX4081S 60
V/V
T
A
= +25°C ±0.1 ±0.6
T
A
= -40°C to +85°C ±1Gain Accuracy ∆A
V
V
CC
= V
RS+
= 48V
(Note 5)
T
A
= T
MIN
to T
MAX
±1.2
%
T
A
= +25°C ±0.1 ±0.6
T
A
= -40°C to +85°C ±1
Input Offset Voltage V
OS
V
CC
= V
RS+
= 48V
(Note 6)
T
A
= T
MIN
to T
MAX
±1.2
mV
Common-Mode Rejection Ratio
CMRR V
CC
= 48V, V
RS+
= 4.5V to 76V 100 124 dB
Power-Supply Rejection Ratio
PSRR V
RS+
= 48V, V
CC
= 4.5V to 76V 100 122 dB
MAX4080F/MAX4081F,
V
SENSE
= 1000mV
MAX4080T/MAX4081T,
V
SENSE
= 250mV
OUT High Voltage
(V
CC
-
V
OH
)
V
CC
= 4.5V, V
RS+
= 48V, V
REF1A
=
V
REF1B
= 2.5V,
I
OUT
(sourcing) =
+500µA (Note 8)
MAX4080S/MAX4081S,
V
SENSE
= 100mV
0.15 0.27 V
MAX4080/MAX4081
2
Maxim Integrated