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MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
General Description
The MAX9038–MAX9043 and MAX9050–MAX9053 feature
combinations of low-power comparators and precision
voltage references. Their operating voltage range makes
them ideal for both 3V and 5V systems. The MAX9038/
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 switching, even
with slow-moving input signals. The output stage features
a unique design that limits supply current 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 railto-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-correction circuit and laser-trimmed
thin-film resistors. These series-mode references can sink
or source up to 500μA of load current.
Applications
● Precision Battery
Management
● Window Comparators
● IR Receivers
Features
● Comparator + Precision Reference in UCSP/SOT23
● 2.5V to 5.5V Single-Supply Operation
(MAX9038–MAX9043)
● Low Supply Current (MAX9038/MAX9039/MAX9040/
MAX9041/MAX9050/MAX9051)
• 40μA Quiescent
• 50μA with 100kHz Switching
• Open-Drain Output MAX9038
● 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
TEMP RANGE
PINPACKAGE
MAX9038BABT+T
-40°C to +125°C
6 UCSP
ADW
MAX9039BEBT+T
-40°C to +85°C
6 UCSP
AAZ
MAX9039BEBT+T10
-40°C to +85°C
6 UCSP
AAZ
MAX9040AEUK+T
-40°C to +85°C
5 SOT23
ADNV
MAX9040BEUK+T
-40°C to +85°C
5 SOT23
ADNX
MAX9041AEUT+T
-40°C to +85°C
6 SOT23
AAHF
MAX9041BEUT+T
-40°C to +85°C
6 SOT23
AAHH
MAX9041AESA
-40°C to +85°C
8 SO
—
MAX9041BESA
-40°C to +85°C
8 SO
—
PART
TOP
MARK
+Denotes 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)
B1
IN+
● Level Translators
● Digital Line Receivers
Typical Operating Circuit and Functional Diagrams appear
at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
IN-
B2
REF
B3
MAX9038
MAX9039
UCSP
TOP VIEW
A1
VEE
OUT 1
A2
OUT
VEE 2
A3
VCC
IN+ 3
+
5
VCC
4
REF
MAX9040
MAX9050
SOT23
Pin Configurations continued at end of data sheet.
19-1569; Rev 12; 10/21
© 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
One Analog Way, Wilmington, MA 01887 U.S.A.
|
Tel: 781.329.4700
|
© 2021 Analog Devices, Inc. All rights reserved.
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Absolute Maximum Ratings
Supply Voltage (VCC to VEE)...................................-0.3V to +6V
OUT (MAX9038).......................................................-0.3V to +6V
All Other Pins................................. (VEE - 0.3V) to (VCC + 0.3V)
Current into Input Pins......................................................±20mA
Output Short-Circuit Duration
(OUT_, REF)..............Indefinite Short Circuit to Either Supply
Continuous Power Dissipation (TA = +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:
MAX9039-43, MAX9051-53............................. -40°C to +85°C
MAX9038, MAX9050..................................... -40°C to +125°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 recommended
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)
(VCC = +5V, VEE = 0V, VCM = 0V, IOUT = 0A, IREF = 0A, TA = -40°C to +85°C for MAX9040-43A_/MAX9051-53A_, TA = -40°C to
+125°C for MAX9050A_, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
Supply Voltage Range (Note 3)
Supply Current
SYMBOL
VCC
ICC
CONDITIONS
Input Hysteresis
Input Bias Current
(Notes 5, 6, 7)
Input Offset Current (Note 5)
VOS
MAX9050–MAX9053
2.7
5.5
MAX9040/MAX9041/
MAX9050/MAX9051
VCC = 2.7V
MAX9042/MAX9043/
MAX9052/MAX9053
VCC = 2.7V
Over entire
common-mode
range
47
67
VCC = 5V
52
72
55
80
VCC = 5V
60
85
±0.5
±5.0
TA = +25°C
TA = -40°C to +85°C
±7.0
±3.0
IB
Specified common-mode range
±0.001
IOS
Specified common-mode range
±0.5
CMVR
Common-Mode Rejection Ratio
(Note 5)
CMRR
Power-Supply Rejection Ratio
PSRR
TA = +25°C
TA = -40°C to +85°C
ISC
Output Voltage Low
VOL
±10.0
VEE
VCC
MAX9040–MAX9043, 2.5V ≤ VCC ≤ 5.5V
55
80
MAX9050-MAX9053, 2.5V ≤ VCC ≤ 5.5V
55
80
80
VOUT = VEE or VCC
VCC = 5V, ISINK = 8mA
VCC = 2.7V
VCC = 2.7V, ISINK = 3.5mA
µA
mV
nA
V
dB
dB
2.5
VCC = 5V
V
pA
VCC +
0.25
52
UNITS
mV
VEE 0.25
Specified common-mode range
CIN
Output Short-Circuit Current
MAX
5.5
VHYST
Common-Mode Voltage Range
(Notes 5, 8)
Input Capacitance (Note 5)
TYP
2.5
COMPARATORS
Input Offset Voltage (Note 4)
MIN
MAX9040–MAX9043
pF
95
mA
35
0.2
0.55
0.15
0.4
V
μMAX is a registered trademark of Maxim Integrated Products, Inc.
www.analog.com
Analog Devices │ 2
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Electrical Characteristics —A Grade (0.4% Initial Accuracy) (continued)
(VCC = +5V, VEE = 0V, VCM = 0V, IOUT = 0A, IREF = 0A, TA = -40°C to +85°C for MAX9040-43A_/MAX9051-53A_, TA = -40°C to
+125°C for MAX9050A_, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
VCC = 5V, ISOURCE = 8mA
Output Voltage High
VOH
Output Rise/Fall Times
tR/tF
Output Propagation Delay
(Note 9)
tPD+/
tPD-
CL = 15pF,
VCC = 2.7V
VREF
TA = +25°C
Power-Up Time
VOLTAGE REFERENCE
Output Voltage
tPU
VCC = 2.7V, ISOURCE = 3.5mA
CL = 200pF
100mV overdrive
400
Time to VOUT valid logic state
Ripple Rejection
Turn-On Settling Time
tR(VREF)
Capacitive-Load Stability Range
(Note 7)
CL(VREF)
ns
20
µs
2.040
2.048
2.056
MAX9050–MAX9053
2.490
2.500
2.510
µMAX/SO
6
30
SOT23
6
50
Sourcing. 0µA ≤ IREF ≤ 500µA
ΔVREF/
ΔVCC
ns
MAX9040–MAX9043
ΔVREF/
ΔIREF
EOUT
V
80
Load Regulation
Noise Voltage
UNITS
40
450
2.5V ≤ VCC ≤ 5.5V, MAX9040–MAX9043
Long-Term Stability
2.55
50mV overdrive
ΔVREF/
ΔVCC
ISC
4.85
2.3
MAX
50
Line Regulation
THYST
4.45
CL = 50pF
TCVREF
Thermal Hysteresis (Note 11)
TYP
CL = 15pF
Output Voltage Temperature
Coefficient (Note 10)
Output Short-Circuit Current
MIN
+50
+200
2.7V ≤ VCC ≤ 5.5V, MAX9050–MAX9053
+50
+200
2
4
Sinking, -500µA ≤ IREF ≤ 0µA
3.5
6
VREF = VEE or VCC
V
ppm/°C
µV/V
µV/µA
4
mA
130
ppm
1000h at TA = +25°C
50
ppm
f = 0.1Hz to 10Hz
40
f = 10Hz to 10kHz
105
µVP-P
µVRMS
VCC = 5V ±100mV, f = 120Hz
84
dB
To VREF = 1% of final value
200
µs
0
4.7
nF
Electrical Characteristics—B Grade (1% Initial Accuracy) (Note 12)
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = -40°C to +85°C for MAX9039-43B_MAX905053B_, TA = -40°C to +125°C for MAX9038B_, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
Supply Voltage Range (Note 3)
Supply Current
www.analog.com
SYMBOL
VCC
ICC
CONDITIONS
MIN
TYP
MAX
MAX9038–MAX9043
2.5
5.5
MAX9050–MAX5053
2.7
5.5
MAX9038/MAX9039/
MAX9040/MAX9041/
MAX9050/MAX9051
VCC = 2.7V
40
VCC = 5.0V
45
MAX9042/MAX9043/
MAX9052/MAX5053
VCC = 2.7V
55
VCC = 5.0V
60
100
UNITS
V
µA
130
Analog Devices │ 3
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Electrical Characteristics—B Grade (1% Initial Accuracy) (Note 12) (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = -40°C to +85°C for MAX9039-43B_MAX905053B_, TA = -40°C to +125°C for MAX9038B_, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
±1
±9.0
mV
COMPARATOR
Input Offset Voltage (Note 4)
Input Hysteresis
Input Bias Current (Notes 5, 6, 7)
Input Offset Current (Note 5)
VOS
VHYST
IB
IOS
Common-Mode Voltage Range
(Notes 5, 8)
CMVR
Common-Mode Rejection Ratio
(Note 5)
CMRR
Power-Supply Rejection Ratio
PSRR
Input Capacitance (Note 5)
CIN
Output Short-Circuit Current
ISC
Output Voltage Low
VOL
Output Voltage High (Except
MAX9038)
VOH
Output Leakage
Output Rise/Fall Times
Output Rise Time
Output Propagation Delay
(Note 9)
Output Rising Propagation Delay
(Note 9)
Power-Up Time
VOLTAGE REFERENCE
Output Voltage
Output Voltage Temperature
Coefficient (Note 10)
www.analog.com
Over entire common-mode range
±3.0
Specified common-mode range
±0.001
Specified common-mode range
±0.5
VEE
52
80
MAX9038–MAX9043, 2.5V ≤ VCC ≤ 5.5V
55
80
55
80
VOUT = VEE or VCC
VCC = 5V, ISOURCE = 8mA
tR
tPD+/tPDtPD+
tPU
VREF
0.2
4.45
VCC = 2.7V, ISOURCE = 3.5mA
TCVREF
0.55
4.85
V
V
2.55
0.5
CL = 15pF
µA
40
CL = 50pF
50
RPU = 10kΩ, CL = 15pF, MAX9038
400
CL = 200pF
ns
80
RPU = 10kΩ, CL = 50pF, MAX9038
1180
RPU = 10kΩ, CL = 200pF, MAX9038
5580
CL = 15pF,
VCC = 2.7V
50mV overdrive
450
100mV overdrive
400
RPU = 10kΩ, CL = 15pF, MAX9038
ns
ns
500
RPU = 10kΩ, CL = 50pF, MAX9038
1540
RPU = 10kΩ, CL = 200pF, MAX9038
ns
3350
Time to VOUT valid logic state
TA = +25°C
mA
0.15
MAX9038
tR/tF
pF
35
VCC = 5V, ISINK = 8mA
VCC = 2.7V, ISINK = 3.5mA
dB
95
VCC = 2.7V
V
dB
2.5
VCC = 5V
nA
pA
VCC
Specified common-mode range
MAX9050–MAX9053, 2.7V ≤ VCC ≤ 5.5V
mV
±25.0
20
µs
MAX9038/MAX9039 (Note 12)
1.225
1.230
1.235
MAX9040–MAX9043
2.028
2.048
2.068
MAX9050–MAX9053
2.475
2.500
2.525
20
100
V
ppm/°C
Analog Devices │ 4
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Electrical Characteristics—B Grade (1% Initial Accuracy) (Note 12) (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = -40°C to +85°C for MAX9039-43B_MAX905053B_, TA = -40°C to +125°C for MAX9038B_, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
Line Regulation
ΔVREF/
ΔVCC
Load Regulation
ΔVREF/
ΔIREF
Output Short-Circuit Current
ISC
Thermal Hysteresis (Note 11)
THYST
Long-Term Stability
CONDITIONS
2.5V ≤ VCC ≤ 5.5V
MIN
TYP
MAX
MAX9038–MAX9043
+50
+200
MAX9050–MAX9053
+50
+200
2
4
3.5
6
Sourcing: 0µA ≤ IREF ≤ 500µA
Sinking: -500µA ≤ IREF ≤ 0µA
VREF = VEE or VCC
UNITS
µV/V
µV/µA
4
mA
130
ppm
1000h at TA = +25°C
100
ppm
Ripple Rejection
ΔVREF/
ΔVCC
VCC = 5V ±100mV, f = 120Hz
84
dB
Turn-On Settling Time
tR(VREF)
To VREF = 1% of final value
200
µs
Capacitive Load Stability Range
(Note 7)
CL(VREF)
0
4.7
nF
Note 2: All devices are 100% production tested at TA = +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: VOS 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: VOVERDRIVE is beyond the offset and hysteresis determined trip point.
Note 10: Temperature coefficient is measured by the box method; i.e., the maximum ΔVREF is divided by the maximum ΔT.
Note 11: Thermal hysteresis is defined as the change in VREF at +25°C before and after cycling the device from TMIN to TMAX.
Note 12: MAX9038/MAX9039 has an initial accuracy of ±0.4%.
Typical Operating Characteristics
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT (µA)
VCC = 2.7V
40
30
20
VCC = 5.0V
50
VCC = 2.7V
40
200
30
20
150
100
VCC = 5.0V
50
VCC = 2.7V
10
10
0
VIN+ > VIN-
MAX9038 toc03
50
60
SUPPLY CURRENT (µA)
VCC = 5.0V
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
SUPPLY CURRENT vs. SWITCHING FREQUENCY
SUPPLY CURRENT (µA)
VIN+ > VIN-
MAX9038 toc01
60
MAX9042/MAX9043/MAX9052/MAX9053
SUPPLY CURRENT vs. TEMPERATURE
MAX9038 toc02
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
SUPPLY CURRENT vs. TEMPERATURE
-40
-20
0
20
40
TEMPERATURE (°C)
www.analog.com
60
80
0
-40
-20
0
20
40
TEMPERATURE (°C)
60
80
0
0.01
0.1
1
10
100
1000
SWITCHING FREQUENCY (kHz)
Analog Devices │ 5
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
VCC = 5V
40
VCC = 2.7V
20
100
100
0
1M
10k
0.01
0.1
MAX9038
OUTPUT LOW VOLTAGE
vs. OUTPUT SINK CURRENT
MAX9038 toc05a
SUPPLY CURRENT (µA)
250
200
150
100
50
VCC = 5.0V
80
60
VCC = 2.7V
20
-40
-20
0
0.01
20
40
TEMPERATURE (°C)
60
MAX9038 toc05
0.1
1
10
OUTPUT SINK CURRENT (mA)
10,000
VIN+ > VIN-
1000
VCC = 2.7V
100
VCC = 5.0V
10
1
0.1
0.01
0.1
1
10
OUTPUT SOURCE CURRENT (mA)
VIN+ > VINOUT SHORTED TO VEE
40
0.1
1000
20
80
MAX9038 toc07
OUTPUT SOURCE CURRENT (mA)
15
10
5
OUTPUT SINK CURRENT (mA)
100
www.analog.com
100
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
120
0
10
OUTPUT HIGH VOLTAGE
vs. OUTPUT SOURCE CURRENT
300
0
1
SWITCHING FREQUENCY (kHz)
FREQUENCY (Hz)
0
1
VCC = 2.7V
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
100
OUTPUT SINK CURRENT (mA)
1
VCC = 5.0V
10
VCC = 5.0V
50
10
0
VCC = 2.7V
100
MAX9038 toc06
30
VIN+ < VIN-
1000
150
OUTPUT HIGH VOLTAGE (VCC - VOH) (mV)
50
200
VOL (mV)
60
OUTPUT LOW VOLTAGE
vs. OUTPUT SINK CURRENT
10,000
MAX9038 toc04
MAX9038 toc03a
SUPPLY CURRENT (µA)
70
250
SUPPLY CURRENT (µA)
80
MAX9042/MAX9043/MAX9052/MAX9053
SUPPLY CURRENT vs. SWITCHING FREQUENCY
VIN- > VIN+
OUT SHORTED TO VCC
80
VCC = 5.0V
MAX9038 toc08
MAX9038
SUPPLY CURRENT
vs. SWITCHING FREQUENCY
60
40
VCC = 2.7V
20
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
Analog Devices │ 6
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
120
550
tPD+ TO VOUT = 50%
OF FINAL VALUE
VCC = 5V
tPD (ns)
100
80
400
20
50
0
100
350
150
tPD+ TO VOUT = 50%
OF FINAL VALUE
400
-20
0
900
800
700
tPD- TO VOUT = 50%
OF FINAL VALUE
20
40
60
600
tPD+, VCC = 5.0V
500
tPD+, VCC = 2.7V
400
tPD-, VCC = 5.0V
300
tPD- TO VOUT = 10%
OF FINAL VALUE
200
80
0
tPD-, VCC = 2.7V
20 40 60 80 100 120 140 160 180 200
TEMPERATURE (°C)
INPUT OVERDRIVE (mV)
PROPAGATION DELAY (tPD+)
PROPAGATION DELAY (tPD-)
MAX9038 toc11
-40
0 100 200 300 400 500 600 700 800 900 1000
CAPACITIVE LOAD (pF)
tPD (ns)
tPD (ns)
tPD+ TO VOUT = 10%
OF FINAL VALUE
350
300
PROPAGATION DELAY
vs. INPUT OVERDRIVE
500
300
350
tPD- TO VOUT = 50%
OF FINAL VALUE
tPD- TO VOUT = 10%
OF FINAL VALUE
CAPACITIVE LOAD (pF)
VOD = 50mV
550
450
tPD- TO VOUT = 10%
OF FINAL VALUE
PROPAGATION DELAY
vs. TEMPERATURE
600
450
400
MAX9038 toc10a
650
tPD+ TO VOUT = 10%
OF FINAL VALUE
500
tPD+ TO VOUT = 10%
OF FINAL VALUE
0 100 200 300 400 500 600 700 800 900 1000
TEMPERATURE (°C)
tPD+ TO VOUT = 50%
OF FINAL VALUE
MAX9038 toc10b
0
VOD = 50mV
600
550
tPD- TO VOUT = 50%
OF FINAL VALUE
450
VCC = 2.7V
40
650
MAX9038 toc12
60
500
PROPAGATION DELAY
vs. CAPACITIVE LOAD (VCC = 5V)
MAX9038 toc10
140
VOD = 50mV
tPD (ns)
600
MAX9038 toc08a
SHORT-CIRCUIT TEMPERATURE (mA)
160
PROPAGATION DELAY
vs. CAPACITIVE LOAD (VCC = 2.7V)
MAX9038 toc09
MAX9038
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
A
A
B
B
A = IN+, 50mV/div
B = OUT, 2V/div
www.analog.com
100ns/div
A = IN+, 50mV/div
B = OUT, 2V/div
100ns/div
Analog Devices │ 7
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
A
MAX9038 toc15
A
POWER-UP DELAY (OUT)
MAX9038 toc14
SWITCHING CURRENT (OUT FALLING EDGE)
MAX9038 toc13
SWITCHING CURRENT (OUT RISING EDGE)
A
B
B
B
C
C
A = IN+, 100mV/div
B = OUT, 5V/div
C = ICC, 1mA/div
100ns/div
INPUT BIAS CURRENT
vs. INPUT VOLTAGE
A
B
C
0.003
INPUT BIAS CURRENT (nA)
MAX9038 toc16
POWER-UP DELAY (REF)
0.001
0.25
0
-0.25
-0.50
-0.75
0
20
40
TEMPERATURE (°C)
www.analog.com
60
80
1
OUTPUT VOLTAGE CHANGE (mV)
MAX9038 toc18
OUTPUT VOLTAGE CHANGE (mV)
THREE TYPICAL PARTS
NORMALIZED TO +25∞C
-20
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
MAX9039
REFERENCE OUTPUT VOLTAGE
TEMPERATURE DRIFT
MAX904_/MAX905_
REFERENCE OUTPUT VOLTAGE
TEMPERATURE DRIFT
-40
0
VIN+ (V)
0.50
-1.00
IB+
IB-
A = VCC, 2V/div
B = REF, 1V/div
C = REF, 50mV/div, 2.048V OFFSET
0.75
VIN- = 2.0V
0.002
0
100µs/div
1.00
5ms/div
A = VCC, 2V/div
B = OUT, 1V/div
MAX9038 tco17
100ns/div
MAX9038 toc19
A = IN+, 100mV/div
B = OUT, 5V/div
C = ICC, 1mA/div
THREE TYPICAL PARTS
NORMALIZED TO +25°C
0
-1
-2
-3
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
Analog Devices │ 8
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
REFERENCE OUTPUT VOLTAGE CHANGE (mV)
MAX9038 toc20
REFERENCE OUTPUT VOLTAGE CHANGE (mV)
100
50
0
TA = +25°C
-50
TA = -40°C
-100
TA = +85°C
-150
-200
2.5
3.0
2000
MAX9038 toc21
LOAD REGULATION
LINE REGULATION
150
TA = +85°C
1500
TA = +25°C
1000
TA = -40°C
500
0
-500
-1000
3.5
4.0
4.5
5.0
-1500
5.5
-500
INPUT VOLTAGE (V)
-300
-100
100
300
500
LOAD CURRENT (mA)
Pin Description
PIN
MAX9038
MAX9039
MAX9040
MAX9050
MAX9042
MAX9052
MAX9043
MAX9053
UCSP
SOT23
SOT23
A2
1
1
SO
SO/μMAX
μMAX
6
—
—
OUT
Comparator Output
A1
2
2
4
B1
3
3
3
4
5
VEE
Negative Supply Voltage
—
—
IN+
Comparator Noninverting Input
B3
4
5
1
2
2
REF
Reference Voltage Output
A3
5
6
B2
—
4
7
8
10
VCC
Positive Supply Voltage
2
—
—
IN-
—
—
—
—
—
5, 8
—
9
N.C.
—
—
1
1
OUTA
Comparator A Output
—
—
—
—
3
4
INA+
Comparator A Noninverting Input
—
—
—
—
5
6
INB+
Comparator B Noninverting Input
—
—
—
—
6
7
INB-
Comparator B Inverting Input
—
—
—
—
7
8
OUTB
—
—
—
—
—
3
INA-
www.analog.com
MAX9041
MAX9051
NAME
FUNCTION
Comparator Inverting Input
No Connection. Not internally connected.
Comparator B Output
Comparator A Inverting Input
Analog Devices │ 9
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Detailed Description
The MAX9038–MAX9043 and MAX9050–MAX9053
feature single/dual, low-power, low-voltage comparators and a precision voltage reference. They operate
from a single 2.5V to 5.5V (MAX903_/MAX904_) or
2.7V to 5.5V (MAX905_) supply. The single compa
rators with reference, (MAX9038/MAX9039/MAX9040/
MAX9041/MAX9050/MAX9051 consume only 40μA of
supply current, while the dual comparators with reference
(MAX9042/MAX9043/MAX9052/MAX9053) consume
only 55μA of supply current. Their common-mode input
range extends 0.25V beyond each rail. Internal hysteresis
ensures clean output switching, even with slow-moving
input signals.
The output stage employs a unique design that minimizes
supply current surges while switching, virtually eliminating
the supply glitches typical of many other comparators.
Large internal output drivers allow rail-to-rail output swing
that can sink and source up to 8mA of current.
The precision reference uses a proprietary curvaturecorrection circuit and laser-trimmed thin-film resistors, resulting in
a temperature coefficient of less than 30ppm/°C over the
extended temperature range and initial accuracy of 0.4% (A
grade). The reference output voltage is set to 1.23V in the
MAX9038/MAX9039, 2.048V in the MAX9040–MAX9043,
and to 2.500V in the MAX9050–MAX9053.
Comparator Input Stage Circuitry
The devices’ input common-mode range extends from
(VEE - 0.25V) to (VCC + 0.25V). These comparators may
operate at any differential input voltage within these limits.
Input bias current is typically 1.0pA if the input voltage is
between the supply rails. Comparator inputs are protected
from overvoltage by internal body diodes connected to the
supply rails. As the input voltage exceeds the supply rails,
R1
VREF
R2
IN+
VCC
VCC
OUT
VIN
IN-
MAX9038–MAX9043
MAX9050–MAX9053
VEE
these body diodes become forward biased and begin to
conduct. Consequently, bias currents increase exponentially as the input voltage exceeds the supply rails.
Comparator Output Stage Circuitry
The comparators in these devices contain a unique output stage capable of rail-to-rail operation with loads up to
8mA. Many comparators consume orders-of-magnitude
more current during switching than during steady-state
operation. However, with this family of comparators,
the supply current change during an output transition is
extremely small. The Typical Operating Characteristics
graph Supply Current vs. Switching Frequency shows
the minimal supply current increase as the output switching frequency approaches 1MHz. This characteristic
reduces the need for power-supply filter capacitors to
reduce glitches created by comparator switching currents. Another advantage realized in high-speed, batterypowered applications is a substantial increase in battery
life. The MAX9038 is an opendrain output comparator
that can be used in logic-level translation or many other
applications where voltage level translation is important.
Applications Information
Additional Hysteresis
These comparators have ±3mV internal hysteresis.
Additional hysteresis can be generated with two resistors
using positive feedback (Figure 1). Use the following procedure to calculate resistor values:
1) Calculate the trip points of the comparator using
these formulas:
(V − VREF ) R2
=
V TH VREF + CC
R1 + R2
R2
=
V TL VREF 1 −
+ R2
R1
VTH is the threshold voltage at which the comparator
switches its output from high to low as VIN rises
above the trip point. VTL is the threshold voltage at
which the comparator switches its output from low to
high as VIN drops below the trip point.
2) The hysteresis band will be:
3) In this example, let VCC = 5V and VREF = 2.5V:
R2
VHYS = V TH − V TL = VCC
R1 + R2
Figure 1. Additional Hysteresis
www.analog.com
Analog Devices │ 10
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Board Layout and Bypassing
VCC
VCC
IN+
VIN
OUT
10kΩ
0.1µF
INVEE
MAX9038–MAX9043
MAX9050–MAX9053
Figure 2. Time Averaging of the Input Signal for Data Recovery
R2
= 2.5 + 2.5
V TH
R1 + R2
and
R2
=
VTL 2.5 1 −
R1 + R2
Power-supply bypass capacitors are not typically needed,
but would be called for in cases where supply impedance is high, supply leads are long, or excessive noise is
expected on the supply lines. Use 100nF bypass capacitors under these conditions. Minimize signal trace lengths
to reduce stray capacitance.
Reference Output/Load Capacitance
The MAX9038/MAX9039/MAX904_/MAX905_ do not
require an output capacitor on REF for frequency stability.
They are stable for capacitive loads up to 4.7nF. However,
in applications where the load or the supply can experience
step changes, an output capacitor will reduce the amount
of overshoot (or undershoot) and assist the circuit’s transient response. When an application is not subject to transient conditions, the REF capacitor can be omitted.
Biasing for Data Recovery
Digital data is often embedded into a bandwidth- and
amplitude-limited analog path. Recovering the data can
be difficult. Figure 2 compares the input signal to a timeaveraged version of itself. This self-biases the threshold
to the average input voltage for optimal noise margin.
4) Select R2. In this example, we will choose 1kΩ.
5) Select VHYS. In this example, we will choose
50mV.
6) Solve for R1:
Even severe phase distortion is eliminated from the digital
output signal. Be sure to choose R1 and C1 so that:
R2
VHYS = VCC
R1 + R2
where fCAR is the fundamental carrier frequency of the
digital data stream.
f CAR >>
1
2πR1C1
1000
0.050 = 5
R1 + 1000
where R1 ≈ 100kΩ, VTH = 2.525V, and VTL =
2.475V.
www.analog.com
Analog Devices │ 11
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Functional Diagrams
1 OUTA
VEE 2
1 OUT
5
VCC
3
IN+
REF
REF 4
MAX9040
MAX9050
VEE 4 (A1)
6 (A2) OUT
REF
REF 1 (B3)
7 (A3) VCC
VCC
MAX9042
MAX9052
2 REF
OUTB 7
3 INA+
INB- 6
REF
4 VEE
INB+ 5
1 OUTA
VCC
MAX9043
MAX9053
2 REF
3 INA-
INB- 7
REF
IN- 2 (B2)
5 VEE
MAX9038
MAX9039
MAX9041
MAX9051
10
OUTB 8
4 INA+
3 (B1) IN+
8
INB+ 6
( ) MAX9038/MAX9039 UCSP BUMPS.
Selector Guide
PART
COMPARATORS
PER PACKAGE
VREF
(V)
MAX9038
1
1.230
Uncommitted
MAX9039
1
1.230
Uncommitted
MAX9040
1
2.048
REF
MAX9041
1
2.048
Uncommitted
MAX9050
1
2.500
REF
MAX9051
1
2.500
Uncommitted
MAX9042
2
2.048
REF/Uncommitted
MAX9043
2
2.048
Uncommitted/Uncommitted
MAX9052
2
2.500
REF/Uncommitted
MAX9053
2
2.500
Uncommitted/Uncommitted
www.analog.com
IN- CONNECTIONS
Analog Devices │ 12
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Pin Configurations (continued)
TOP VIEW
OUT 1
VEE 2
+
MAX9041
MAX9051
IN+ 3
6
VCC
5
REF
4
IN-
REF 1
IN- 2
IN+
3
MAX9041
MAX9051
VEE 4
8
N.C.
OUTA 1
7
VCC
REF 2
6
OUT
5
N.C.
3
VEE 4
SO
SOT23
VCC
7
OUTB
OUTA 1
6
INB-
5
INB+
10
VCC
9
N.C.
8
OUTB
REF
2
INA-
3
INA+
4
7
INB-
VEE
5
6
INB+
MAX9043
MAX9053
µMAX
µMAX/SO
Ordering Information (continued)
Typical Operating Circuit
TEMP RANGE
PINPACKAGE
MAX9042AEUA
-40°C to +85°C
8 µMAX
—
MAX9042BEUA
-40°C to +85°C
8 µMAX
—
MAX9042AESA
-40°C to +85°C
8 SO
—
MAX9042BESA
-40°C to +85°C
8 SO
—
MAX9043AEUB
-40°C to +85°C
10 µMAX
—
MAX9043BEUB
-40°C to +85°C
10 µMAX
—
MAX9050AEUK+T
-40°C to +85°C
5 SOT23
ADNW
MAX9050BEUK+T
-40°C to +85°C
5 SOT23
ADNY
MAX9051AEUT+T
-40°C to +85°C
6 SOT23
AAHG
MAX9051BEUT+T
-40°C to +85°C
6 SOT23
AAHI
MAX9051AESA
-40°C to +85°C
8 SO
—
MAX9051BESA
-40°C to +85°C
8 SO
—
MAX9052AEUA
-40°C to +85°C
8 µMAX
AAHG
MAX9052BEUA
-40°C to +85°C
8 µMAX
AAHI
MAX9052AESA
-40°C to +85°C
8 SO
—
MAX9052BESA
-40°C to +85°C
8 SO
—
MAX9053AEUB
-40°C to +85°C
10 µMAX
—
MAX9053BEUB
-40°C to +85°C
10 µMAX
—
PART
INA+
MAX9042
MAX9052
8
TOP
MARK
VCC
VIN
VPU*
VCC
0.1µF
IN+
RPU*
OUT
INREF
MAX9038/MAX9039
MAX9041/MAX9043
MAX9051/MAX9053
1.23V/2.048V/
2.500V
VEE
*MAX9038 ONLY
Chip Information
PROCESS: CMOS
+Denotes lead(Pb)-free/RoHS-compliant package.
www.analog.com
Analog Devices │ 13
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE
PACKAGE CODE
OUTLINE NO.
LAND
PATTERN NO.
6 UCSP
B6-3
21-0097
—
5 SOT23
—
21-0057
90-0174
6 SOT23
—
21-0058
90-0175
8 SO
—
21-0041
90-0096
8 FMAX
—
21-0036
90-0092
10 FMAX
—
21-0061
90-0330
www.analog.com
Analog Devices │ 14
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
0
10/99
Initial release
—
1
1/00
Corrections to initial release
—
2
4/00
Adding new part
—
3
4/00
Increase in Max Supply Current specifications
—
4
10/02
Adding UCSP package for MAX9039
—
5
10/07
Adding input current ratings in Absolute Maximum Ratings, style changes
—
6
3/09
Update Chip Information, Package Information, correct MAX9053 part number, style
changes
7
3/13
Updated the General Description, Electrical Characteristics, and the Package
Information
8
9/13
Added the MAX9038 and lead-free information to the data sheet.
9
11/15
Added MAX9039BEBT+T10 to Ordering Information
1
10
1/17
Removed MAX9039BEBT+T10 from Ordering Information table
1
11
4/19
Updated General Description, Absolute Maximum Ratings, Electrical Characteristics,
and Ordering Information
12
10/21
Updated Ordering Information
1, 2, 10, 12–19
1, 3–5, 13
1–15
1–3, 13
1
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is
assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that
may result from its use.Specifications subject to change without notice. No license is granted by implicationor
otherwise under any patent or patent rights of Analog Devices. Trademarks andregistered trademarks are the
property of their respective owners.
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