MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
General Description
Features
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
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.
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
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.
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
Level Translators
Digital Line Receivers
Window Comparators
IR Receivers
Typical Operating Circuit and Functional Diagrams appear
at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
TOP
MARK
TEMP RANGE
MAX9038BABT+T
-40°C to +125°C
6 UCSP
MAX9039BEBT+T
-40°C to +85°C
6 UCSP
AAZ
MAX9040AEUK+T
-40°C to +85°C
5 SOT23
ADNW
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
—
ADW
+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)
TOP VIEW
Applications
Precision Battery
Management
PINPACKAGE
PART
+
IN+
B1
A1
VEE
OUT 1
MAX9038
MAX9039
IN-
B2
A2
OUT
VEE 2
REF
B3
A3
VCC
IN+ 3
UCSP
5
VCC
4
REF
MAX9040
MAX9050
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 (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 ...........................-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 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 = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 2)
PARAMETER
Supply Voltage Range (Note 3)
SYMBOL
VCC
CONDITIONS
ICC
TYP
MAX
2.5
5.5
MAX9050–MAX9053
2.7
5.5
MAX9040/MAX9041/
MAX9050/MAX9051
Supply Current
MIN
MAX9040–MAX9043
MAX9042/MAX9043/
MAX9052/MAX9053
VCC = 2.7V
47
67
VCC = 5V
52
72
VCC = 2.7V
55
80
VCC = 5V
60
85
±0.5
±5.0
UNITS
V
µA
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)
VOS
TA = +25°C
mV
TA = -40°C to +85°C
±7.0
VHYST
±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
Input Capacitance (Note 5)
Over entire
common-mode
range
ISC
Output Voltage Low
VOL
±10.0
VCC +
0.25
TA = -40°C to +85°C
VEE
VCC
Specified common-mode range
52
80
MAX9040–MAX9043, 2.5V ≤ VCC ≤ 5.5V
55
80
MAX9050–MAX9053, 2.5V ≤ VCC ≤ 5.5V
55
80
VOUT = VEE or VCC
95
VCC = 2.7V
35
V
dB
dB
2.5
VCC = 5V
nA
pA
VEE 0.25
TA = +25°C
CIN
Output Short-Circuit Current
mV
pF
mA
VCC = 5V, ISINK = 8mA
0.2
0.55
VCC = 2.7V, ISINK = 3.5mA
0.15
0.4
V
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)
(VCC = +5V, VEE = 0V, VCM = 0V, IOUT = 0A, IREF = 0A, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
Output Voltage High
VOH
Output Rise/Fall Times
tR/tF
Output Propagation Delay
(Note 9)
tPD+/
tPD-
CONDITIONS
MIN
4.45
4.85
VCC = 2.7V, ISOURCE = 3.5mA
2.3
2.55
CL = 15pF
40
CL = 50pF
50
CL = 200pF
Power-Up Time
tPU
TYP
VCC = 5V, ISOURCE = 8mA
MAX
UNITS
V
ns
80
CL = 15pF,
VCC = 2.7V
50mV overdrive
450
100mV overdrive
400
Time to VOUT valid logic state
ns
20
µs
VOLTAGE REFERENCE
Output Voltage
VREF
MAX9040–MAX9043
2.040
2.048
2.056
MAX9050–MAX9053
2.490
2.500
2.510
µMAX/SO
6
30
SOT23
6
50
TA = +25°C
Output Voltage Temperature
Coefficient (Note 10)
TCVREF
Line Regulation
ΔVREF/
ΔVCC
2.5V ≤ VCC ≤ 5.5V, MAX9040–MAX9043
+50
+200
2.7V ≤ VCC ≤ 5.5V, MAX9050–MAX9053
+50
+200
Load Regulation
ΔVREF/
ΔIREF
Sourcing. 0µA ≤ IREF ≤ 500µA
2
4
Sinking, -500µA ≤ IREF ≤ 0µA
3.5
6
Output Short-Circuit Current
ISC
Thermal Hysteresis (Note 11)
THYST
Long-Term Stability
Noise Voltage
Ripple Rejection
VREF = VEE or VCC
1000h at TA = +25°C
EOUT
ΔVREF/
ΔVCC
Turn-On Settling Time
tR(VREF)
Capacitive-Load Stability Range
(Note 7)
CL(VREF)
V
ppm/°C
µV/V
µV/µA
4
mA
130
ppm
50
ppm
f = 0.1Hz to 10Hz
40
µVP-P
f = 10Hz to 10kHz
105
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 = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
Supply Voltage Range (Note 3)
VCC
Supply Current
ICC
CONDITIONS
TYP
MAX
MAX9038–MAX9043
2.5
5.5
MAX9050–MAX5053
MAX9038/MAX9039/
MAX9040/MAX9041/
MAX9050/MAX9051
2.7
5.5
MAX9042/MAX9043/
MAX9052/MAX5053
Maxim Integrated
MIN
VCC = 2.7V
40
VCC = 5.0V
45
VCC = 2.7V
55
VCC = 5.0V
60
100
UNITS
V
µA
130
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 = TMIN to TMAX, 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
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
ISC
Output Voltage Low
VOL
Output Voltage High (Except
MAX9038)
VOH
Output Leakage
Output Rise Time
Output Propagation Delay
(Note 9)
Output Rising Propagation
Delay (Note 9)
Power-Up Time
VEE
52
80
MAX9038–MAX9043, 2.5V ≤ VCC ≤ 5.5V
55
80
MAX9050–MAX9053, 2.7V ≤ VCC ≤ 5.5V
55
80
VOUT = VEE or VCC
95
VCC = 2.7V
35
VCC = 5V, ISINK = 8mA
0.2
VCC = 2.7V, ISINK = 3.5mA
0.15
VCC = 5V, ISOURCE = 8mA
4.45
VCC = 2.7V, ISOURCE = 3.5mA
tR
tPD+/tPD-
tPD+
tPU
dB
mA
0.55
50
CL = 200pF
80
RPU = 10kΩ, CL = 15pF, MAX9038
400
RPU = 10kΩ, CL = 50pF, MAX9038
1180
RPU = 10kΩ, CL = 200pF, MAX9038
5580
50mV overdrive
450
100mV overdrive
400
RPU = 10kΩ, CL = 15pF, MAX9038
500
RPU = 10kΩ, CL = 50pF, MAX9038
1540
RPU = 10kΩ, CL = 200pF, MAX9038
3350
Time to VOUT valid logic state
V
V
0.5
40
CL = 15pF,
VCC = 2.7V
pF
2.55
CL = 50pF
V
dB
4.85
CL = 15pF
nA
pA
2.5
VCC = 5V
MAX9038
tR/tF
mV
±25.0
VCC
Specified common-mode range
CIN
Output Short-Circuit Current
Output Rise/Fall Times
±3.0
IB
Common-Mode Voltage Range
(Notes 5, 8)
Input Capacitance (Note 5)
Over entire common-mode range
µA
ns
ns
ns
ns
20
µs
VOLTAGE REFERENCE
Output Voltage
Output Voltage Temperature
Coefficient (Note 10)
4
VREF
TCVREF
TA = +25°C
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
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)
(VCC = 5V, VEE = 0V, VCM = 0V, VPU = 1.8V, RPU = 10kΩ, IOUT = 0A, IREF = 0A, TA = TMIN to TMAX, 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
CONDITIONS
2.5V ≤ VCC ≤ 5.5V
MIN
TYP
MAX9038–MAX9043
+50
+200
MAX9050–MAX9053
+50
+200
Sourcing: 0µA ≤ IREF ≤ 500µA
2
4
Sinking: -500µA ≤ IREF ≤ 0µA
3.5
6
VREF = VEE or VCC
Long-Term Stability
UNIT
MAX
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.)
MAX9042/MAX9043/MAX9052/MAX9053
SUPPLY CURRENT vs. TEMPERATURE
VCC = 2.7V
30
20
VIN+ > VIN-
VCC = 5.0V
50
SUPPLY CURRENT (µA)
SUPPLY CURRENT (µA)
50
40
60
VCC = 2.7V
40
200
30
20
MAX9038 toc03
VCC = 5.0V
SUPPLY CURRENT (µA)
VIN+ > VIN-
MAX9038 toc01
60
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
SUPPLY CURRENT vs. SWITCHING FREQUENCY
MAX9038 toc02
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
SUPPLY CURRENT vs. TEMPERATURE
150
100
VCC = 5.0V
50
VCC = 2.7V
10
10
0
0
-40
-20
0
20
40
TEMPERATURE (°C)
Maxim Integrated
60
80
0
-40
-20
0
20
40
TEMPERATURE (°C)
60
80
0.01
0.1
1
10
100
1000
SWITCHING FREQUENCY (kHz)
5
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VPU = 1.8V, RPU = 10kΩ, VCM = 0V, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
MAX9042/MAX9043/MAX9052/MAX9053
SUPPLY CURRENT vs. SWITCHING FREQUENCY
VCC = 5V
40
VCC = 2.7V
VCC = 2.7V
150
100
50
1
VCC = 2.7V
10
0
100
0.1
0.01
1M
10k
0.1
1
10
100
1000
0.01
SWITCHING FREQUENCY (kHz)
FREQUENCY (Hz)
MAX9038
OUTPUT LOW VOLTAGE
vs. OUTPUT SINK CURRENT
MAX9038 toc05a
200
150
100
50
VIN+ > VIN1000
VCC = 2.7V
100
VCC = 5.0V
10
1
0.1
15
10
5
OUTPUT SINK CURRENT (mA)
0
0.01
20
100
VCC = 5.0V
80
60
40
VCC = 2.7V
20
0
10
100
VIN- > VIN+
OUT SHORTED TO VCC
OUTPUT SINK CURRENT (mA)
VIN+ > VINOUT SHORTED TO VEE
1
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
MAX9038 toc07
120
0.1
OUTPUT SOURCE CURRENT (mA)
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
OUTPUT SOURCE CURRENT (mA)
10
10,000
OUTPUT HIGH VOLTAGE (VCC - VOH) (mV)
SUPPLY CURRENT (µA)
250
80
VCC = 5.0V
60
40
VCC = 2.7V
20
0
-40
-20
0
20
40
TEMPERATURE (°C)
6
1
OUTPUT HIGH VOLTAGE
vs. OUTPUT SOURCE CURRENT
300
0
0.1
OUTPUT SINK CURRENT (mA)
MAX9038 toc08
1
VCC = 5.0V
10
VCC = 5.0V
20
0
100
MAX9038 toc06
30
VIN+ < VIN-
1000
VOL (mV)
50
200
SUPPLY CURRENT (μA)
60
10,000
MAX9038 toc04
70
SUPPLY CURRENT (µA)
250
MAX9038 toc03a
80
OUTPUT LOW VOLTAGE
vs. OUTPUT SINK CURRENT
MAX9038 toc05
MAX9038
SUPPLY CURRENT
vs. SWITCHING FREQUENCY
60
80
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
Maxim Integrated
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VPU = 1.8V, RPU = 10kΩ, VCM = 0V, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
PROPAGATION DELAY
vs. CAPACITIVE LOAD (VCC = 2.7V)
120
VOD = 50mV
550
VCC = 5V
tPD (ns)
100
80
500
tPD- TO VOUT = 50%
OF FINAL VALUE
tPD+ TO VOUT = 10%
OF FINAL VALUE
VCC = 2.7V
40
400
20
100
0 100 200 300 400 500 600 700 800 900 1000
CAPACITIVE LOAD (pF)
TEMPERATURE (°C)
CAPACITIVE LOAD (pF)
PROPAGATION DELAY
vs. TEMPERATURE
PROPAGATION DELAY
vs. INPUT OVERDRIVE
VOD = 50mV
tPD+ TO VOUT = 50%
OF FINAL VALUE
800
550
700
500
tPD (ns)
tPD+ TO VOUT = 10%
OF FINAL VALUE
450
tPD- TO VOUT = 50%
OF FINAL VALUE
400
350
tPD+, VCC = 2.7V
-20
0
20
40
60
tPD-, VCC = 5.0V
300
tPD-, VCC = 2.7V
200
80
0
20 40 60 80 100 120 140 160 180 200
TEMPERATURE (°C)
INPUT OVERDRIVE (mV)
PROPAGATION DELAY (tPD+)
PROPAGATION DELAY (tPD-)
MAX9038 toc11
-40
tPD+, VCC = 5.0V
500
400
tPD- TO VOUT = 10%
OF FINAL VALUE
300
600
MAX9038 toc12
tPD (ns)
MAX9038 toc10b
900
MAX9038 toc10a
650
600
tPD- TO VOUT = 50%
OF FINAL VALUE
tPD- TO VOUT = 10%
OF FINAL VALUE
300
0 100 200 300 400 500 600 700 800 900 1000
150
450
350
350
50
0
500
400
tPD- TO VOUT = 10%
OF FINAL VALUE
tPD+ TO VOUT = 50%
OF FINAL VALUE
tPD+ TO VOUT = 10%
OF FINAL VALUE
550
450
60
0
tPD+ TO VOUT = 50%
OF FINAL VALUE
VOD = 50mV
600
tPD (ns)
140
650
MAX9038 toc09
600
MAX9038 toc08a
SHORT-CIRCUIT TEMPERATURE (mA)
160
PROPAGATION DELAY
vs. CAPACITIVE LOAD (VCC = 5V)
MAX9038 toc10
MAX9038
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
A
A
B
B
100ns/div
A = IN+, 50mV/div
B = OUT, 2V/div
Maxim Integrated
100ns/div
A = IN+, 50mV/div
B = OUT, 2V/div
7
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VPU = 1.8V, RPU = 10kΩ, VCM = 0V, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
SWITCHING CURRENT (OUT RISING EDGE)
A
MAX9038 toc15
A
POWER-UP DELAY (OUT)
MAX9038 toc14
MAX9038 toc13
SWITCHING CURRENT (OUT FALLING EDGE)
A
B
B
C
B
C
100ns/div
100ns/div
A = IN+, 100mV/div
B = OUT, 5V/div
C = ICC, 1mA/div
5μs/div
A = IN+, 100mV/div
B = OUT, 5V/div
C = ICC, 1mA/div
A = VCC, 2V/div
B = OUT, 1V/div
INPUT BIAS CURRENT (nA)
MAX9038 toc16
0.003
A
B
C
MAX9038 tco17
INPUT BIAS CURRENT
vs. INPUT VOLTAGE
POWER-UP DELAY (REF)
VIN- = 2.0V
IB+
0.002
IB0.001
0
100μs/div
A = VCC, 2V/div
B = REF, 1V/div
C = REF, 50mV/div, 2.048V OFFSET
0
VIN+ (V)
MAX9039
REFERENCE OUTPUT VOLTAGE
TEMPERATURE DRIFT
0.50
0.25
0
-0.25
-0.50
1
MAX9038 toc19
THREE TYPICAL PARTS
NORMALIZED TO +25°C
OUTPUT VOLTAGE CHANGE (mV)
OUTPUT VOLTAGE CHANGE (mV)
0.75
MAX9038 toc18
MAX904_/MAX905_
REFERENCE OUTPUT VOLTAGE
TEMPERATURE DRIFT
1.00
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
THREE TYPICAL PARTS
NORMALIZED TO +25°C
0
-1
-2
-0.75
-1.00
-3
-40
-20
0
20
40
TEMPERATURE (°C)
8
60
80
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
Maxim Integrated
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VPU = 1.8V, RPU = 10kΩ, VCM = 0V, IOUT = 0A, IREF = 0A, TA = +25°C, unless otherwise noted.)
LOAD REGULATION
50
0
TA = +25°C
-50
TA = -40°C
-100
TA = +85°C
-150
2000
MAX9038 toc21
100
REFERENCE OUTPUT VOLTAGE CHANGE (μV)
MAX9038 toc20
REFERENCE OUTPUT VOLTAGE CHANGE (μV)
LINE REGULATION
150
TA = +85°C
1500
TA = +25°C
1000
500
TA = -40°C
0
-500
-1000
-200
-1500
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-500
INPUT VOLTAGE (V)
-300
-100
100
300
500
LOAD CURRENT (μA)
Pin Description
PIN
MAX9038
MAX9039
MAX9040
MAX9050
MAX9042
MAX9052
MAX9043
MAX9053
UCSP
SOT23
SOT23
SO
SO/µMAX
µMAX
A2
1
1
6
—
—
OUT
Comparator Output
A1
2
2
4
4
5
VEE
Negative Supply Voltage
B1
3
3
3
—
—
IN+
Comparator Noninverting Input
B3
4
5
1
2
2
REF
Reference Voltage Output
A3
5
6
7
8
10
VCC
Positive Supply Voltage
B2
—
4
2
—
—
IN-
Comparator Inverting Input
—
—
—
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-
Maxim Integrated
MAX9041
MAX9051
NAME
FUNCTION
No Connection. Not internally connected.
Comparator B Output
Comparator A Inverting Input
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, 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, battery-powered 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:
(
and
R1
R2
VREF
VCC
VCC
IN+
OUT
VIN
IN-
MAX9038–MAX9043
MAX9050–MAX9053
VEE
)
⎞
⎛ V
CC − VREF R2
⎟
VTH = VREF + ⎜
⎟⎟
⎜⎜
R1 + R2
⎠
⎝
⎛
R2 ⎞
VTL = VREF ⎜1 −
⎟
⎝ R1 + R2 ⎠
VTH is the threshold voltage at which the comparator
switches its output from high to low as V IN 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 = VTH − VTL = VCC ⎜
⎟
⎝ R1 + R2 ⎠
Figure 1. Additional Hysteresis
10
Maxim Integrated
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Board Layout and Bypassing
VCC
VCC
IN+
VIN
OUT
10kΩ
IN-
0.1μF
MAX9038–MAX9043
MAX9050–MAX9053
VEE
Figure 2. Time Averaging of the Input Signal for Data Recovery
⎛ R2 ⎞
VTH = 2.5 + 2.5 ⎜
⎟
⎝ R1 + R2 ⎠
and
⎛
R2 ⎞
VTL = 2.5 ⎜1 −
⎟
R1 + R2 ⎠
⎝
4) Select R2. In this example, we will choose 1kΩ.
5) Select VHYS. In this example, we will choose 50mV.
6) Solve for R1:
⎛ R2 ⎞
VHYS = VCC ⎜
⎟
⎝ R1 + R2 ⎠
⎛ 1000 ⎞
0.050 = 5 ⎜
⎟
⎝ R1 +1000 ⎠
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
time-averaged version of itself. This self-biases the
threshold to the average input voltage for optimal noise
margin.
Even severe phase distortion is eliminated from the digital output signal. Be sure to choose R1 and C1 so that:
fCAR >>
1
2πR1C1
where fCAR is the fundamental carrier frequency of the
digital data stream.
where R1 ≈ 100kΩ, VTH = 2.525V, and VTL = 2.475V.
Maxim Integrated
11
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Functional Diagrams
1 OUTA
VEE 2
1 OUT
VCC
MAX9042
MAX9052
2 REF
5
VCC
3
IN+
REF
OUTB
8
7
INB- 6
3 INA+
REF
REF 4
MAX9040
MAX9050
6 (A2)
VEE 4 (A1)
OUT
4 VEE
INB+ 5
1 OUTA
VCC
MAX9043
MAX9053
10
REF
2 REF
OUTB
8
REF 1 (B3)
7 (A3) VCC
3 INA-
INB- 7
4 INA+
REF
IN- 2 (B2)
3 (B1) IN+
5 VEE
MAX9038
MAX9039
MAX9041
MAX9051
INB+ 6
( ) MAX9038/MAX9039 UCSP BUMPS.
Selector Guide
12
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
IN- CONNECTIONS
Maxim Integrated
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Pin Configurations (continued)
TOP VIEW
+
OUT 1
VEE 2
MAX9041
MAX9051
6
VCC
5
REF
REF 1
IN- 2
4
IN-
N.C.
OUTA 1
7
VCC
REF 2
3
6
OUT
VEE 4
5
N.C.
IN+
IN+ 3
MAX9041
MAX9051
8
MAX9042
MAX9052
TEMP RANGE
PINPACKAGE
7
OUTB
6
INB-
VEE 4
5
INB+
OUTA 1
TOP
MARK
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+
-40°C to +85°C
5 SOT23
ADNW
MAX9050BEUK+
-40°C to +85°C
5 SOT23
ADNY
MAX9051AEUT+
-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
—
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)
PART
VCC
3
INA+
SO
SOT23
8
Typical Operating Circuit
VCC
VIN
VPU*
VCC
0.1μF
IN+
RPU*
OUT
IN-
MAX9038/MAX9039
MAX9041/MAX9043
MAX9051/MAX9053
REF
1.23V/2.048V/
2.500V
VEE
—
*MAX9038 ONLY
—
Chip Information
PROCESS: CMOS
+Denotes a lead(Pb)-free/RoHS-compliant package.
Maxim Integrated
13
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Package Information (continued)
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.
14
PACKAGE TYPE
PACKAGE CODE
OUTLINE NO.
LAND
PATTERN NO.
6 UCSP
B6-3
21-0097
—
5 SOT23
U5-2
21-0057
90-0174
6 SOT23
U6-2
21-0058
90-0175
8 SO
S8-10F
21-0041
90-0096
8 µMAX
U8-1
21-0036
90-0092
10 µMAX
U10-2
21-0061
90-0330
Maxim Integrated
MAX9038–MAX9043/
MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Revision History
PAGES
CHANGED
REVISION
NUMBER
REVISION
DATE
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
1, 2, 10, 12–19
7
3/13
Updated the General Description, Electrical Characteristics, and the Package
Information
1, 3-5, 13
8
9/13
Added the MAX9038 and lead-free information to the data sheet.
DESCRIPTION
1–15
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 ________________________________ 15
© 2013 Maxim Integrated Products, Inc.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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