The MAX40201 dual-channel, high-side, current-sense
amplifier has V
OS
of less than 12μV (max) and gain error
of less than 0.1% (max). The outputs of the MAX40201
are voltage outputs capable of swinging to a few tens of
millivolts of the V
DD
rail and ground.
The MAX40201 features an input common-mode voltage
range from 0V to 76V with 80kHz of small-signal band-
width, which makes it ideal for interfacing with a SAR ADC
for multichannel multiplexed data acquisition systems.
The MAX40201 operates over the -40°C to +125°C
temperature range. The MAX40201 is offered in 8-bump
wafer-level package (WLP) and 8-pin µMAX
®
package.
Benefits and Features
● Low 0.1% (max) Gain Error
●
0V to 76V Input Common Mode
● Low 12μV (max) Input Offset Voltage
● Gain Options
•
G = 25V/V (MAX40201T)
•
G = 50V/V (MAX40201F)
•
G = 100V/V (MAX40201H)
•
G = 200V/V (MAX40201W)
● 1.3mm x 2mm 8-Bump WLP and 8-Pin µMAX
Packages
Ordering Information
appears at end of data sheet.
Applications
●
●
●
●
Base Stations and Communication Equipment
Power Management Systems
Server Backplanes
Industrial Control and Automation
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
V
CM
= 0V TO 76V
R
SENSE1
I
SENSE1
SYSTEM
LOAD 1
V
CM
= 0V TO 76V
V
DD
= 2.7V TO
5.5V
RS1+
V
DD
RS1-
R
SENSE2
I
SENSE2
SYSTEM
LOAD 2
RS2+
RS2-
OUT2
OUT1
MAX40201
GND
19-100028; Rev 4; 3/18
MAX40201
Dual-Channel, 0V to 76V Current-Sense Amplifier
Absolute Maximum Ratings
V
DD
to GND
.........................................................-0.3V to +6.0V
RS+, RS- to GND
..................................................-0.3V to +80V
RS+ to RS- ..........................................................................±30V
Continuous Input Current (Any Pin)
.................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
WLP (derate 13.4mW/°C above +70°C)
....................1072mW
µMAX (derate 4.8mW/°C above +70°C)
...................387.8mW
Operating Temperature Range ......................... -40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s)(µMAX only)
............. +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.
Package Thermal Characteristics
(Note 1)
WLP
Junction-to-Ambient Thermal Resistance (θ
JA
)
.......74.7°C/W
µMAX
Junction-to-Ambient Thermal Resistance (θ
JA
)
.....206.3°C/W
Junction-to-Case Thermal Resistance (θ
JC
)
...............42°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.
Electrical Characteristics
(V
RS+
= V
RS-
= +50V, V
DD
= +3.3V, V
SENSE
= V
RS+
- V
RS-
= 1mV, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are
at T
A
=+25°C.) (Note 2)
PARAMETER
DC CHARACTERISTICS
Supply Voltage
Supply Current
(Both Channels)
Power-Supply Rejection
Ratio
Input Common-Mode
Voltage Range
Input Bias Current at
V
RS+
and V
RS-
Input Offset Current
Input Leakage Current
Common-Mode Rejection
Ratio
V
DD
I
DD
PSRR
V
CM
I
RS+
, I
RS-
I
RS+
- I
RS-
I
RS+
, I
RS-
CMRR
V
DD
= 0V, V
RS+
= 76V
0V < V
RS+
< 76V
µMAX
Input Offset Voltage
V
OS
WLP
Input Offset Voltage Drift
TCV
OS
T
A
= +25°C, 0 < V
CM
< 76V
-40°C ≤ T
A
≤ +125°C,
0 < V
CM
< 76V
T
A
= +25°C, 0 < V
CM
< 76V
-40°C ≤ T
A
≤ +125°C,
0 < V
CM
< 76V
130
0.5
±12
±25
±20
±33
130
nV/°C
µV
Guaranteed by PSRR
No loads
2.7V ≤ V
DD
≤ 5.5V
Guaranteed by CMRR
110
0
76
0.2
0.2
0.2
2.7
1.3
5.5
2.1
V
mA
dB
V
µA
µA
µA
dB
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
www.maximintegrated.com
Maxim Integrated │
2
MAX40201
Dual-Channel, 0V to 76V Current-Sense Amplifier
Electrical Characteristics (continued)
(V
RS+
= V
RS-
= +50V, V
DD
= +3.3V, V
SENSE
= V
RS+
- V
RS-
= 1mV, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are
at T
A
=+25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MAX40201T (G = 25V/V)
Input Sense Voltage
V
SENSE
MAX40201F (G = 50V/V)
MAX402015H (G = 100V/V)
MAX40201W (G = 200V/V)
Full-scale V
SENSE
= 100mV
Gain (Note 3)
G
Full-scale V
SENSE
= 50mV
Full-scale V
SENSE
= 25mV
Full-scale V
SENSE
= 12.5mV
µMAX
Gain Error
GE
WLP
Output Resistance
Output Low Voltage
Output High Voltage
AC CHARACTERISTICS
Signal Bandwidth
AC Power-Supply Rejec-
tion Ratio
AC CMRR
Capacitive Load Stability
Input Voltage-Noise
Density
Power-Up Time (Note 4)
Settling Time
(Settling to 0.1%)
V
SENSE
steps from 20% FS to 80% FS
(t
R
= t
F
= 5µs), V
CM
= 24V, C
L
= 20pF
BW -3dB
AC PSRR
AC CMRR
C
LOAD
e
n
All gain configurations V
SENSE
> 5mV
f = 200kHz
f = 200kHz, 100mV sine wave
With 250Ω isolation resistor
Without any isolation resistor
f = 1kHz
80
40
47
20
200
95
500
20
kHz
dB
dB
nF
pF
nV/√Hz
µs
µs
R
OUT
V
OL
V
OH
T
A
= +25°C
-40°C ≤ T
A
≤ +125°C
T
A
= +25°C
-40°C ≤ T
A
≤ +125°C
0.1
15
4
V
DD
-
0.015
MIN
TYP
100
50
25
12.5
25
50
100
200
0.1
0.25
0.15
0.3
Ω
mV
V
%
V/V
mV
MAX
UNITS
V
OUT
= V
DD
/2, I
OUT
= ±500μA
Sink 500μA
No load
Source 500µA
Note 2:
All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 3:
Gain and offset voltage are calculated based on two point measurements: V
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