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
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.
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
Operating Voltage Range
Common-Mode Range
Supply Current
Leakage Current
Input Bias Current
Full-Scale Sense Voltage (Note 4)
SYMBOL
V
CC
C
MVR
I
CC
I
RS+
, I
RS-
I
RS+
, I
RS-
V
SENSE
CONDITIONS
Inferred from PSRR test
Inferred from CMRR test (Note 3)
V
CC
= V
RS+
= 76V,
no load
V
CC
= V
RS+
= 76V
MAX4080F/MAX4081F
MAX4080T/MAX4081T
MAX4080S/MAX4081S
MAX4080F/MAX4081F
Gain
A
V
MAX4080T/MAX4081T
MAX4080S/MAX4081S
Gain Accuracy
∆A
V
V
CC
= V
RS+
= 48V
(Note 5)
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= T
MIN
to T
MAX
Input Offset Voltage
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
V
OS
CMRR
PSRR
V
CC
= V
RS+
= 48V
(Note 6)
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= T
MIN
to T
MAX
V
CC
= 48V, V
RS+
= 4.5V to 76V
V
RS+
= 48V, V
CC
= 4.5V to 76V
MAX4080F/MAX4081F,
V
SENSE
= 1000mV
MAX4080T/MAX4081T,
V
SENSE
= 250mV
MAX4080S/MAX4081S,
V
SENSE
= 100mV
0.15
0.27
V
100
100
124
122
±0.1
MAX4080
MAX4081
MIN
4.5
4.5
75
103
0.01
5
±1000
±250
±100
5
20
60
±0.1
±0.6
±1
±1.2
±0.6
±1
±1.2
dB
dB
mV
%
V/V
mV
TYP
MAX
76
76
190
190
2
12
UNITS
V
V
µA
µA
µA
V
CC
= 0V, V
RS+
= 76V
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)
2
Maxim Integrated
MAX4080/MAX4081
76V, High-Side, Current-Sense Amplifiers with
Voltage Output
DC ELECTRICAL CHARACTERISTICS (continued)
(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
V
CC
= V
RS+
= 48V,
V
REF1A
= V
REF1B
= I
OUT
(sinking) = 10µA
2.5V, V
SENSE
=
I
OUT
(sinking) =
-1000mV (for
100µA
MAX4081 only)
Inferred from REF1A rejection ratio,
V
REF1A
= V
REF1B
Inferred from REF1A rejection ratio,
V
REF1B
= V
GND
V
CC
= V
RS+
= 48V, V
SENSE
= 0V,
V
REF1A
= V
REF1B
= 1.5V to 6V
V
REF1A
= 10V, V
REF1B
= V
GND
,
V
CC
= V
RS+
= 48V (Note 2)
V
REF1B
= V
GND
1.5
3
80
0.497
108
0.500
250
0.503
kΩ
MIN
TYP
4
MAX
15
mV
23
55
6
12
V
V
dB
UNITS
OUT Low Voltage
V
OL
REF1A = REF1B Input Voltage
Range (MAX4081 Only)
REF1A Input Voltage Range
(MAX4081 Only)
REF1A Rejection Ratio
(MAX4081 Only)
REF/REF1A Ratio
(MAX4081 Only)
REF1A Input Impedance
(MAX4081 Only)
(V
REF
-
V
GND
)
(V
REF1A
-
V
GND
)
Maxim Integrated
3
MAX4080/MAX4081
76V, High-Side, Current-Sense Amplifiers with
Voltage Output
AC 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, C
LOAD
= 20pF,
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Notes 1, 2)
PARAMETER
Bandwidth
OUT Settling Time to 1% of Final
Value
Capacitive-Load Stability
Output Resistance
Power-Up Time
Saturation Recovery Time
R
OUT
SYMBOL
BW
CONDITION
V
CC
= V
RS+
=
48V, V
OUT
= 2.5V
MAX4080F/T/S
MAX4081F/T/S
MIN
TYP
250
150
20
20
500
0.1
50
50
MAX
UNITS
kHz
µs
pF
Ω
µs
µs
V
SENSE
= 10mV to 100mV
V
SENSE
= 100mV to 10mV
No sustained oscillations
V
SENSE
= 100mV
V
CC
= V
RS+
= 48V, V
SENSE
= 100mV (Note 9)
(Notes 9,10)
Note 1:
All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2:
V
REF
is defined as the average voltage of V
REF1A
and V
REF1B
. REF1B is usually connected to REF1A or GND.
V
SENSE
is defined as V
RS+
- V
RS-
.
Note 3:
The common-mode range at the low end of 4.5V applies to the most positive potential at RS+ or RS-. Depending on the
polarity of V
SENSE
and the device’s gain, either RS+ or RS- can extend below 4.5V by the device’s typical full-scale value of
V
SENSE
.
Note 4:
Negative V
SENSE
applies to MAX4081 only.
Note 5:
V
SENSE
is:
MAX4080F, 10mV to 1000mV
MAX4080T, 10mV to 250mV
MAX4080S, 10mV to 100mV
MAX4081F, -500mV to +500mV
MAX4081T, -125mV to +125mV
MAX4081S, -50mV to +50mV
Note 6:
V
OS
is extrapolated from the gain accuracy test for the MAX4080 and measured as (V
OUT
- V
REF
)/A
V
at V
SENSE
= 0V, for the
MAX4081.
Note 7:
V
SENSE
is:
MAX4080F, 500mV
MAX4080T, 125mV
MAX4080S, 50mV
MAX4081F/T/S, 0V
V
REF1B
= V
REF1A
= 2.5V
Note 8:
Output voltage is internally clamped not to exceed 18V.
Note 9:
Output settles to within 1% of final value.
Note 10:
The device will not experience phase reversal when overdriven.
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