MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
General Description
The MAX9038–MAX9043 and MAX9050–MAX9053 fea-
ture combinations of low-power comparators and preci-
sion voltage references. Their operating voltage range
makes them ideal for both 3V and 5V systems. The
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
have a single comparator and reference consuming
only 40µA of supply current. The MAX9042/MAX9043/
MAX9052/MAX9053 have dual comparators and one
reference, and consume only 55µA of supply current.
Low-voltage operation and low supply current make
these devices ideal for battery-operated systems.
The comparators feature rail-to-rail inputs and outputs,
with a common-mode input voltage range that extends
250mV beyond the supply rails. Input bias current is
typically 1.0pA, and input offset voltage is typically
0.5mV. Internal hysteresis ensures clean output switch-
ing, even with slow-moving input signals. The output
stage features a unique design that limits supply cur-
rent surges while switching, virtually eliminating supply
glitches typical of many other comparators. This design
also minimizes overall power consumption under
dynamic conditions. The comparator outputs have rail-
to-rail, push-pull output stages except the MAX9038
has an open-drain output that sinks and sources up to
8mA. The propagation delay is 400ns, even with the
low-operating supply current.
The reference output voltage is set to 1.23V in the
MAX9038/MAX9039, to 2.048V in the MAX9040–
MAX9043, and to 2.500V in the MAX9050–MAX9053.
The MAX9040–MAX9043 and the MAX9050–MAX9053
are offered in two grades: an A grade with 0.4% initial
accuracy and 6ppm/°C tempco, and a B grade with 1%
initial accuracy (except MAX9038/MAX9039 have an
initial accuracy of ±0.4%) and 100ppm/°C tempco. The
voltage references feature a proprietary curvature-cor-
rection circuit and laser-trimmed thin-film resistors.
These series-mode references can sink or source up to
500µA of load current.
Features
o
Comparator + Precision Reference in UCSP/SOT23
o
2.5V to 5.5V Single-Supply Operation
(MAX9038–MAX9043)
o
Low Supply Current (MAX9038/MAX9039/MAX9040/
MAX9041/MAX9050/MAX9051)
40µA Quiescent
50µA with 100kHz Switching
Open-Drain Output MAX9038
o
o
o
o
o
400ns Propagation Delay
Rail-to-Rail Inputs
Rail-to-Rail Output Stage Sinks and Sources 8mA
Internal ±3mV Hysteresis
Voltage Reference Offers
±0.4% (max) Initial Accuracy (A Grade)
6ppm/°C (typ) Temperature Coefficient (A Grade)
Stable for 0 to 4.7nF Capacitive Loads
Ordering Information
PART
MAX9038BABT+T
MAX9039BEBT+T
MAX9040AEUK+T
MAX9040BEUK+T
MAX9041AEUT+T
MAX9041BEUT+T
MAX9041AESA
MAX9041BESA
TEMP RANGE
-40°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
6 UCSP
6 UCSP
5 SOT23
5 SOT23
6 SOT23
6 SOT23
8 SO
8 SO
TOP
MARK
ADW
AAZ
ADNW
ADNX
AAHF
AAHH
—
—
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
Pin Configurations
TOP VIEW (BUMPS ON BOTTOM)
IN+
B1
A1
V
EE
OUT 1
TOP VIEW
+
5
V
CC
Applications
Precision Battery
Management
Window Comparators
IR Receivers
Level Translators
Digital Line Receivers
MAX9038
MAX9039
IN-
B2
A2
OUT
V
EE
2
MAX9040
MAX9050
REF
B3
A3
V
CC
IN+ 3
4
REF
Typical Operating Circuit and Functional Diagrams appear
at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
UCSP
SOT23
Pin Configurations continued at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-1569; Rev 8; 9/13
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
to V
EE
) ....................................-0.3V to +6V
OUT (MAX9038) .......................................................-0.3V to +6V
All Other Pins ...................................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Current into Input Pins ......................................................±20mA
Output Short-Circuit Duration
(OUT_, REF) ...............Indefinite Short Circuit to Either Supply
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 7.10mW/°C above +70°C)..........571mW
6-Bump UCSP (derate 3.9mW/°C above +70°C) ........308mW
6-Pin SOT23 (derate 8.70mW/°C above +70°C)..........696mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin µMAX
®
(derate 4.1mW/°C above +70°C) ...........330mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Bump Reflow Temperature (Note 1) ................................+235°C
Note 1:
This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device
can be exposed to during board-level solder attach and rework. This limit permits only the use of the solder profiles recom-
mended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and Convection Packaging
Reflow. Preheating is required. Hand or wave soldering is not allowed.
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.
ELECTRICAL CHARACTERISTICS—A Grade (0.4% Initial Accuracy)
(V
CC
= +5V, V
EE
= 0V, V
CM
= 0V, I
OUT
= 0A, I
REF
= 0A, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
PARAMETER
Supply Voltage Range (Note 3)
SYMBOL
V
CC
CONDITIONS
MAX9040–MAX9043
MAX9050–MAX9053
MAX9040/MAX9041/
MAX9050/MAX9051
Supply Current
I
CC
MAX9042/MAX9043/
MAX9052/MAX9053
Over entire
common-mode
range
V
CC
= 2.7V
V
CC
= 5V
V
CC
= 2.7V
V
CC
= 5V
T
A
= +25°C
T
A
= -40°C to +85°C
±3.0
Specified common-mode range
Specified common-mode range
T
A
= +25°C
T
A
= -40°C to +85°C
Common-Mode Rejection Ratio
(Note 5)
Power-Supply Rejection Ratio
Input Capacitance (Note 5)
Output Short-Circuit Current
Output Voltage Low
CMRR
PSRR
C
IN
I
SC
V
OL
V
OUT
= V
EE
or V
CC
V
CC
= 5V, I
SINK
= 8mA
V
CC
= 2.7V, I
SINK
= 3.5mA
V
CC
= 5V
V
CC
= 2.7V
Specified common-mode range
MAX9040–MAX9043, 2.5V
≤
V
CC
≤
5.5V
MAX9050–MAX9053, 2.5V
≤
V
CC
≤
5.5V
V
EE
-
0.25
V
EE
52
55
55
80
80
80
2.5
95
35
0.2
0.15
0.55
0.4
±0.001
±0.5
V
CC
+
0.25
V
CC
dB
dB
pF
mA
V
±10.0
MIN
2.5
2.7
47
52
55
60
±0.5
TYP
MAX
5.5
5.5
67
72
80
85
±5.0
mV
±7.0
mV
nA
pA
V
µA
UNITS
V
COMPARATORS
Input Offset Voltage (Note 4)
Input Hysteresis
Input Bias Current
(Notes 5, 6, 7)
Input Offset Current (Note 5)
Common-Mode Voltage Range
(Notes 5, 8)
V
OS
V
HYST
I
B
I
OS
CMVR
µMAX is a registered trademark of Maxim Integrated Products, Inc.
2
Maxim Integrated
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
ELECTRICAL CHARACTERISTICS—A Grade (0.4% Initial Accuracy) (continued)
(V
CC
= +5V, V
EE
= 0V, V
CM
= 0V, I
OUT
= 0A, I
REF
= 0A, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
PARAMETER
Output Voltage High
SYMBOL
V
OH
CONDITIONS
V
CC
= 5V, I
SOURCE
= 8mA
V
CC
= 2.7V, I
SOURCE
= 3.5mA
C
L
= 15pF
Output Rise/Fall Times
Output Propagation Delay
(Note 9)
Power-Up Time
VOLTAGE REFERENCE
Output Voltage
Output Voltage Temperature
Coefficient (Note 10)
Line Regulation
Load Regulation
Output Short-Circuit Current
Thermal Hysteresis (Note 11)
Long-Term Stability
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
(Note 7)
E
OUT
ΔV
REF
/
ΔV
CC
t
R
(V
REF
)
C
L
(V
REF
)
V
REF
TCV
REF
ΔV
REF
/
ΔV
CC
ΔV
REF
/
ΔI
REF
I
SC
T
HYST
1000h at T
A
= +25°C
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
CC
= 5V ±100mV, f = 120Hz
To V
REF
= 1% of final value
0
T
A
= +25°C
µMAX/SO
SOT23
2.5V
≤
V
CC
≤
5.5V, MAX9040–MAX9043
2.7V
≤
V
CC
≤
5.5V, MAX9050–MAX9053
Sourcing. 0µA
≤
I
REF
≤
500µA
Sinking, -500µA
≤
I
REF
≤
0µA
V
REF
= V
EE
or V
CC
MAX9040–MAX9043
MAX9050–MAX9053
2.040
2.490
2.048
2.500
6
6
+50
+50
2
3.5
4
130
50
40
105
84
200
4.7
2.056
2.510
30
50
+200
+200
4
6
V
ppm/°C
µV/V
µV/µA
mA
ppm
ppm
µV
P-P
µV
RMS
dB
µs
nF
t
R
/t
F
t
PD+/
t
PD-
t
PU
C
L
= 50pF
C
L
= 200pF
C
L
= 15pF,
V
CC
= 2.7V
50mV overdrive
100mV overdrive
MIN
4.45
2.3
TYP
4.85
2.55
40
50
80
450
400
20
ns
µs
ns
MAX
UNITS
V
Time to V
OUT
valid logic state
ELECTRICAL CHARACTERISTICS—B Grade (1% Initial Accuracy) (Note 12)
(V
CC
= 5V, V
EE
= 0V, V
CM
= 0V, V
PU
= 1.8V, R
PU
= 10kΩ, I
OUT
= 0A, I
REF
= 0A, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.) (Note 2)
PARAMETER
Supply Voltage Range (Note 3)
SYMBOL
V
CC
CONDITIONS
MAX9038–MAX9043
MAX9050–MAX5053
MAX9038/MAX9039/
MAX9040/MAX9041/
MAX9050/MAX9051
MAX9042/MAX9043/
MAX9052/MAX5053
Maxim Integrated
MIN
2.5
2.7
TYP
MAX
5.5
5.5
UNITS
V
V
CC
= 2.7V
V
CC
= 5.0V
V
CC
= 2.7V
V
CC
= 5.0V
40
45
55
60
130
3
Supply Current
I
CC
100
µA
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
ELECTRICAL CHARACTERISTICS—B Grade (1% Initial Accuracy) (Note 12) (continued)
(V
CC
= 5V, V
EE
= 0V, V
CM
= 0V, V
PU
= 1.8V, R
PU
= 10kΩ, I
OUT
= 0A, I
REF
= 0A, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.) (Note 2)
PARAMETER
COMPARATOR
Input Offset Voltage (Note 4)
Input Hysteresis
Input Bias Current (Notes 5, 6, 7)
Input Offset Current (Note 5)
Common-Mode Voltage Range
(Notes 5, 8)
Common-Mode Rejection Ratio
(Note 5)
Power-Supply Rejection Ratio
Input Capacitance (Note 5)
Output Short-Circuit Current
Output Voltage Low
Output Voltage High (Except
MAX9038)
Output Leakage
Output Rise/Fall Times
t
R
/t
F
V
OS
V
HYST
I
B
I
OS
CMVR
CMRR
PSRR
C
IN
I
SC
V
OL
V
OH
V
OUT
= V
EE
or V
CC
V
CC
= 5V, I
SINK
= 8mA
V
CC
= 2.7V, I
SINK
= 3.5mA
V
CC
= 5V, I
SOURCE
= 8mA
V
CC
= 2.7V, I
SOURCE
= 3.5mA
MAX9038
C
L
= 15pF
C
L
= 50pF
C
L
= 200pF
R
PU
= 10kΩ, C
L
= 15pF, MAX9038
Output Rise Time
t
R
R
PU
= 10kΩ, C
L
= 50pF, MAX9038
R
PU
= 10kΩ, C
L
= 200pF, MAX9038
Output Propagation Delay
(Note 9)
Output Rising Propagation
Delay (Note 9)
Power-Up Time
VOLTAGE REFERENCE
MAX9038/MAX9039 (Note 12)
Output Voltage
Output Voltage Temperature
Coefficient (Note 10)
V
REF
T
A
= +25°C
MAX9040–MAX9043
MAX9050–MAX9053
TCV
REF
1.225
2.028
2.475
1.230
2.048
2.500
20
1.235
2.068
2.525
100
ppm/°C
V
t
PD+
/t
PD-
C
L
= 15pF,
V
CC
= 2.7V
50mV overdrive
100mV overdrive
40
50
80
400
1180
5580
450
400
500
1540
3350
20
µs
ns
ns
ns
ns
4.45
V
CC
= 5V
V
CC
= 2.7V
Specified common-mode range
MAX9038–MAX9043, 2.5V
≤
V
CC
≤
5.5V
MAX9050–MAX9053, 2.7V
≤
V
CC
≤
5.5V
Specified common-mode range
Specified common-mode range
V
EE
52
55
55
80
80
80
2.5
95
35
0.2
0.15
4.85
2.55
0.5
0.55
Over entire common-mode range
±1
±3.0
±0.001
±0.5
V
CC
±25.0
±9.0
mV
mV
nA
pA
V
dB
dB
pF
mA
V
V
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R
PU
= 10kΩ, C
L
= 15pF, MAX9038
t
PD+
R
PU
= 10kΩ, C
L
= 50pF, MAX9038
R
PU
= 10kΩ, C
L
= 200pF, MAX9038
t
PU
Time to V
OUT
valid logic state
4
Maxim Integrated
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
ELECTRICAL CHARACTERISTICS—B Grade (1% Initial Accuracy) (Note 12) (continued)
(V
CC
= 5V, V
EE
= 0V, V
CM
= 0V, V
PU
= 1.8V, R
PU
= 10kΩ, I
OUT
= 0A, I
REF
= 0A, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.) (Note 2)
PARAMETER
Line Regulation
Load Regulation
Output Short-Circuit Current
Thermal Hysteresis (Note 11)
Long-Term Stability
Ripple Rejection
Turn-On Settling Time
Capacitive Load Stability
Range (Note 7)
ΔV
REF
/
ΔV
CC
t
R
(V
REF
)
C
L
(V
REF
)
SYMBOL
ΔV
REF
/
ΔV
CC
ΔV
REF
/
ΔI
REF
I
SC
T
HYST
1000h at T
A
= +25°C
V
CC
= 5V ±100mV, f = 120Hz
To V
REF
= 1% of final value
0
CONDITIONS
2.5V
≤
V
CC
≤
5.5V
MAX9038–MAX9043
MAX9050–MAX9053
MIN
TYP
+50
+50
2
3.5
4
130
100
84
200
4.7
MAX
+200
+200
4
6
UNIT
µV/V
µV/µA
mA
ppm
ppm
dB
µs
nF
Sourcing: 0µA
≤
I
REF
≤
500µA
Sinking: -500µA
≤
I
REF
≤
0µA
V
REF
= V
EE
or V
CC
Note 2:
All devices are 100% production tested at T
A
= +25°C. Limits over the extended temperature range are guaranteed by
design.
Note 3:
Supply voltage range guaranteed by PSRR test on comparator and line regulation of REF.
Note 4:
V
OS
is defined as the center of the input-referred hysteresis band.
Note 5:
For the comparators with the inverting input (IN-) uncommitted.
Note 6:
Input bias current is the average of the inverting and noninverting input bias currents.
Note 7:
Not production tested. Guaranteed by design.
Note 8:
Guaranteed by CMRR test.
Note 9:
V
OVERDRIVE
is beyond the offset and hysteresis determined trip point.
Note 10:
Temperature coefficient is measured by the box method; i.e., the maximum
ΔV
REF
is divided by the maximum
ΔT.
Note 11:
Thermal hysteresis is defined as the change in V
REF
at +25°C before and after cycling the device from T
MIN
to T
MAX
.
Note 12:
MAX9038/MAX9039 has an initial accuracy of ±0.4%.
Typical Operating Characteristics
(V
CC
= 5V, V
EE
= 0V, V
CM
= 0V, V
PU
= 1.8V, R
PU
= 10kΩ, I
OUT
= 0A, I
REF
= 0A, T
A
= +25°C, unless otherwise noted.)
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
SUPPLY CURRENT vs. TEMPERATURE
MAX9038 toc01
MAX9042/MAX9043/MAX9052/MAX9053
SUPPLY CURRENT vs. TEMPERATURE
MAX9038 toc02
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
SUPPLY CURRENT vs. SWITCHING FREQUENCY
MAX9038 toc03
60
50
SUPPLY CURRENT (µA)
40
30
20
10
0
60
50
SUPPLY CURRENT (µA)
40
30
20
10
0
V
IN+
> V
IN-
V
CC
= 5.0V
V
IN+
> V
IN-
200
V
CC
= 5.0V
V
CC
= 2.7V
V
CC
= 2.7V
SUPPLY CURRENT (µA)
150
100
V
CC
= 5.0V
50
V
CC
= 2.7V
0
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
0.01
0.1
1
10
100
1000
TEMPERATURE (°C)
TEMPERATURE (°C)
SWITCHING FREQUENCY (kHz)
Maxim Integrated
5
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