General Description
The MAX9039–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 that sink and source 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
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 accura-
cy and 100ppm/°C tempco. The voltage references
feature a proprietary curvature-correction circuit and
laser-trimmed thin-film resistors. These series-mode ref-
erences can sink or source up to 500µA of load current.
Applications
Features
♦Comparator + Precision Reference in UCSP/SOT23
♦2.5V to 5.5V Single-Supply Operation
(MAX9039–MAX9043)
♦Low Supply Current (MAX9039/MAX9040/
MAX9041/MAX9050/MAX9051)
40µA Quiescent
50µA with 100kHz Switching
♦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
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
________________________________________________________________ Maxim Integrated Products 1
19-1569; Rev 6; 3/09
Ordering Information
UCSP is a trademark of Maxim Integrated Products, Inc.
*UCSP reliability is integrally linked to the user’s assembly
methods, circuit board material, and environment. Refer to the
UCSP Reliability section of this data sheet for more information.
Typical Operating Circuit and Functional Diagrams appear
at end of data sheet.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
TOP VIEW (BUMPS ON BOTTOM) TOP VIEW
V
EE
REFIN+
15VCC
OUT
MAX9040
MAX9050
SOT23
2
34
IN-
V
CC
REF
VEE
IN+
MAX9039
B3
OUT
B1
A3
A2
A1
B2
UCSP
Pin Configurations
Pin Configurations continued at end of data sheet.
PIN-
PACKAGE
6 UCSP
5 SOT23
6 SOT23
6 SOT23
8 SO
8 SO
5 SOT23-40°C to +85°C
MAX9040AEUK-T ADNW
-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
TEMP RANGEPART
MAX9039BEBT-T*
MAX9040BEUK-T
MAX9041AEUT-T
MAX9041BEUT-T
MAX9041AESA
MAX9041BESA
TOP
MARK
AAZ
ADNX
AAHF
AAHH
—
—
Precision Battery
Management
Window Comparators
IR Receivers
Level Translators
Digital Line Receivers
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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)
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.
Supply Voltage (VCC to VEE) ....................................-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 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.
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
MAX9040–MAX9043
2.5 5.5
Supply Voltage Range (Note 3) VCC MAX9050–MAX9053
2.7 5.5
V
VCC = 2.7V
47 67
MAX9040/MAX9041/
MAX9050/MAX9051 VCC = 5V
52 72
VCC = 2.7V
55 80
Supply Current ICC MAX9042/MAX9043/
MAX9052/MAX9053 VCC = 5V
60 85
µA
COMPARATORS
TA = +25°C
±0.5 ±5.0
Input Offset Voltage (Note 4) VOS
Over entire
common-mode
range TA = -40°C to +85°C
±7.0
mV
Input Hysteresis
VHYST ±3.0
mV
Input Bias Current
(Notes 5, 6, 7) IBSpecified common-mode range
±0.001 ±10.0
nA
Input Offset Current (Note 5) IOS Specified common-mode range
±0.5
pA
TA = +25°C VEE -
0.25
VCC +
0.25
Common-Mode Voltage Range
(Notes 5, 8)
CMVR
TA = -40°C to +85°C
VEE VCC
V
Common-Mode Rejection Ratio
(Note 5)
CMRR
Specified common-mode range
52 80
dB
MAX9040–MAX9043, 2.5V ≤ VCC ≤ 5.5V
55
80
Power-Supply Rejection Ratio PSRR MAX9050–MAX9053, 2.5V ≤ VCC ≤ 5.5V
55
80 dB
Input Capacitance (Note 5) CIN
2.5
pF
VCC = 5V 95
Output Short-Circuit Current ISC VOUT = VEE or VCC VCC = 2.7V 35 mA
VCC = 5V, ISINK = 8mA
0.2 0.55
Output Voltage Low VOL VCC = 2.7V, ISINK = 3.5mA
0.15 0.4
V
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
_______________________________________________________________________________________ 3
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)
ELECTRICAL CHARACTERISTICS—B Grade (1% 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
SYMBOL
CONDITIONS
MIN
TYP
MAX
VCC = 5V, ISOURCE = 8mA
4.45 4.85
Output Voltage High VOH VCC = 2.7V, ISOURCE = 3.5mA
2.3 2.55
V
CL = 15pF
40
CL = 50pF
50
Output Rise/Fall Times tR/tF
CL = 200pF
80
ns
50mV overdrive
450
Output Propagation Delay
(Note 9)
tPD+/
tPD-
CL = 15pF,
VCC = 2.7V 100mV overdrive
400
ns
Power-Up Time tPU Time to VOUT
valid logic state
20
µs
VOLTAGE REFERENCE
MAX9040–MAX9043
2.040 2.048 2.056
Output Voltage VREF TA = +25°C MAX9050–MAX9053
2.490 2.500 2.510
V
µMAX/SO 6
30
Output Voltage Temperature
Coefficient (Note 10)
TCVREF
SOT23 6
50
2.5V ≤ VCC ≤ 5.5V, MAX9040–MAX9043
+50 +200
Line Regulation
ΔVREF/
ΔVCC 2.7V ≤ VCC ≤ 5.5V, MAX9050–MAX9053
+50 +200
Sourcing. 0µA ≤ IREF ≤ 500µA 2 4
Load Regulation
ΔVREF/
ΔIREF Sinking, -500µA ≤ IREF ≤ 0µA
3.5
6
Output Short-Circuit Current ISC VREF = VEE or VCC 4mA
Thermal Hysteresis (Note 11)
THYST 130
Long-Term Stability 1000h at TA = +25°C
50
f = 0.1Hz to 10Hz
40
Noise Voltage EOUT f = 10Hz to 10kHz
105
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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX9039–MAX9043 2.5 5.5
Supply Voltage Range (Note 3) VCC MAX9050–MAX5053 2.7 5.5 V
VCC = 2.7V 40
MAX9039/MAX9040/
MAX9041/MAX9050/
MAX9051 VCC = 5.0V 45 100
VCC = 2.7V 55
Supply Current ICC
MAX9042/MAX9043/
MAX9052/MAX5053 VCC = 5.0V 60 130
µA
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—B Grade (1% 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
CONDITIONS
MIN
TYP
MAX
UNITS
COMPARATOR
Input Offset Voltage (Note 4) VOS Over entire common-mode range ±1
±9.0
mV
Input Hysteresis
VHYST ±3.0
mV
Input Bias Current (Notes 5, 6, 7)
IBSpecified common-mode range
±0.001 ±25.0
nA
Input Offset Current (Note 5) IOS Specified common-mode range
±0.5
pA
Common-Mode Voltage Range
(Notes 5, 8)
CMVR VEE VCC
V
Common-Mode Rejection Ratio
(Note 5)
CMRR
Specified common-mode range 52 80 dB
MAX9039–MAX9043, 2.5V ≤ VCC ≤ 5.5V 55 80
Power-Supply Rejection Ratio PSRR MAX9050–MAX9053, 2.7V ≤ VCC ≤ 5.5V 55 80 dB
Input Capacitance (Note 5) CIN 2.5 pF
VCC = 5V 95
Output Short-Circuit Current ISC VOUT = VEE or VCC VCC = 2.7V 35 mA
VCC = 5V, ISINK = 8mA 0.2
0.55
Output Voltage Low VOL VCC = 2.7V, ISINK = 3.5mA
0.15
V
VCC = 5V, ISOURCE = 8mA
4.45 4.85
Output Voltage High VOH VCC = 2.7V, ISOURCE = 3.5mA
2.55
V
CL = 15pF 40
CL = 50pF 50Output Rise/Fall Times tR/tF
CL = 200pF 80
ns
50mV overdrive
450
Output Propagation Delay
(Note 9)
tPD+/tPD-
CL = 15pF,
VCC = 2.7V 100mV overdrive
400
ns
Power-Up Time tPU Time to VOUT valid logic state 20 µs
VOLTAGE REFERENCE
MAX9039
1.218 1.230 1.242
MAX9040–MAX9043 2.028 2.048 2.068
Output Voltage VREF TA = +25°C
MAX9050–MAX9053 2.475 2.500 2.525
V
Output Voltage Temperature
Coefficient (Note 10)
TCVREF
20
100
ppm/°C
MAX9039–MAX9043 +50 +200
Line Regulation
ΔVREF/
ΔVCC 2.5V ≤ VCC ≤ 5.5V
MAX9050–MAX9053 +50 +200
µV/V
Sourcing: 0µA ≤ IREF ≤ 500µA 2 4
Load Regulation
ΔVREF/
ΔIREF Sinking: -500µA ≤ IREF ≤ 0µA 3.5 6
µV/µA
Output Short-Circuit Current ISC VREF = VEE or VCC 4mA
Thermal Hysteresis (Note 11)
THYST 130
ppm
Long-Term Stability 1000h at TA = +25°C
100
ppm
f = 0.1Hz to 10Hz 40
µVP-P
Noise Voltage EOUT f = 10Hz to 10kHz
105
µVRMS
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS—B Grade (1% 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)
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.
Typical Operating Characteristics
(VCC = 5V, VEE = 0V, VCM = 0V, IOUT = 0A, IREF = 0A, TA= +25°C, unless otherwise noted.)
0
10
30
20
50
40
60
-40 0-20 20 40 60 80
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
SUPPLY CURRENT vs. TEMPERATURE
MAX9039/43/50-53 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
VCC = 5.0V
VIN+ > VIN-
VCC = 2.7V
0
10
30
20
50
40
60
-40 0-20 20 40 60 80
MAX9042/MAX9043/MAX9052/MAX9053
SUPPLY CURRENT vs. TEMPERATURE
MAX9039/43/50-53 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
VCC = 5.0V
VIN+ > VIN-
VCC = 2.7V
0.01 0.1 1 10 100 1000
200
150
100
50
0
MAX9039/MAX9040/MAX9041/MAX9050/MAX9051
SUPPLY CURRENT vs. SWITCHING FREQUENCY
MAX9039/43/50-53 toc03
SWITCHING FREQUENCY (kHz)
SUPPLY CURRENT (μA)
VCC = 5.0V
VCC = 2.7V
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
6 _______________________________________________________________________________________
10,000
1000
100
10
1
0.1
0.01 1 100.1
OUTPUT HIGH VOLTAGE
vs. OUTPUT SOURCE CURRENT
MAX9039/43/50-53 toc06
OUTPUT SOURCE CURRENT (mA)
OUTPUT HIGH VOLTAGE (VCC - VOH) (mV)
VCC = 5.0V
VIN+ > VIN-
VCC = 2.7V
0
40
20
60
100
80
120
-40 0-20 20406080
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
MAX9039/43/50-53 toc07
TEMPERATURE (°C)
OUTPUT SINK CURRENT (mA)
VCC = 5.0V
VIN+ > VIN-
OUT SHORTED TO VEE
VCC = 2.7V
0
20
60
40
80
100
-40 -20 0 20 40 60 80
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
MAX9039/43/50-53 toc08
TEMPERATURE (°C)
OUTPUT SOURCE CURRENT (mA)
VCC = 5.0V
VIN- > VIN+
OUT SHORTED TO VCC
VCC = 2.7V
350
400
450
500
550
600
0 400200 600 800100 500300 700 900 1000
PROPAGATION DELAY
vs. CAPACITIVE LOAD (VCC = 2.7V)
MAX9039/43/50-53 toc09
CAPACITIVE LOAD (pF)
tPD (ns)
tPD+ TO VOUT = 50%
OF FINAL VALUE
tPD- TO VOUT = 50%
OF FINAL VALUE
tPD+ TO VOUT = 10%
OF FINAL VALUE
tPD- TO VOUT = 10%
OF FINAL VALUE
VOD = 50mV
300
400
350
500
450
600
550
650
0 400200 600 800100 500300 700 900 1000
PROPAGATION DELAY
vs. CAPACITIVE LOAD (VCC = 5V)
MAX9039/43/50-53 toc10
CAPACITIVE LOAD (pF)
tPD (ns)
tPD+ TO VOUT = 50%
OF FINAL VALUE
tPD- TO VOUT = 50%
OF FINAL VALUE
tPD+ TO VOUT = 10%
OF FINAL VALUE
tPD- TO VOUT = 10%
OF FINAL VALUE
VOD = 50mV
350
300
450
400
600
550
500
650
-40 0-20 20 40 60 80
PROPAGATION DELAY
vs. TEMPERATURE
MAX9039/43/50-53 toc10a
TEMPERATURE (°C)
tPD (ns)
tPD+ TO VOUT = 50%
OF FINAL VALUE
tPD- TO VOUT = 50%
OF FINAL VALUE
tPD+ TO VOUT = 10%
OF FINAL VALUE
tPD- TO VOUT = 10%
OF FINAL VALUE
VOD = 50mV
200
400
300
600
500
800
700
900
08040 120 16020 10060 140 180 200
PROPAGATION DELAY
vs. INPUT OVERDRIVE
MAX9039/43/50-53 toc10b
INPUT OVERDRIVE (mV)
tPD (ns)
tPD+, VCC = 5.0V
tPD-, VCC = 2.7V
tPD-, VCC = 5.0V
tPD+, VCC = 2.7V
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, IOUT = 0A, IREF = 0A, TA= +25°C, unless otherwise noted.)
250
0.01 0.1 1 10 100 1000
200
150
100
50
0
MAX9042/MAX9043/MAX9052/MAX9053
SUPPLY CURRENT vs. SWITCHING FREQUENCY
MAX9039/43/50-53 toc04
SWITCHING FREQUENCY (kHz)
SUPPLY CURRENT (μA)
VCC = 5.0V
VCC = 2.7V
10,000
1000
100
10
1
0.1
0.01 1 100.1
OUTPUT LOW VOLTAGE
vs. OUTPUT SINK CURRENT
MAX9039/43/50-53 toc05
OUTPUT SINK CURRENT (mA)
VOL (mV)
VCC = 5.0V
VIN+ < VIN-
VCC = 2.7V
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
_______________________________________________________________________________________ 7
B
C
A
100ns/div
SWITCHING CURRENT (OUT FALLING EDGE)
MAX9039/43/50-53 toc14
A = IN+, 100mV/div
B = OUT, 5V/div
C = ICC, 1mA/div
B
A
5μs/div
POWER-UP DELAY (OUT)
MAX9039/43/50-53 toc15
A = VCC, 2V/div
B = OUT, 1V/div
B
C
A
100μs/div
POWER-UP DELAY (REF)
MAX9039/43/50-53 toc16
A = VCC, 2V/div
B = REF, 1V/div
C = REF, 50mV/div, 2.048V OFFSET
0
0.001
0.002
0.003
02.01.50.5 1.0 2.5 3.0 3.5 4.0 4.5 5.0
INPUT BIAS CURRENT
vs. INPUT VOLTAGE
MAX9039/43/50-53 tco17
VIN+ (V)
INPUT BIAS CURRENT (nA)
VIN- = 2.0V
IB+
IB-
-1.00
-0.50
-0.75
0
-0.25
0.75
0.50
0.25
1.00
-40 0-20 20406080
MAX904_/MAX905_
REFERENCE OUTPUT VOLTAGE
TEMPERATURE DRIFT
MAX9039/43/50-53 toc18
TEMPERATURE (°C)
OUTPUT VOLTAGE CHANGE (mV)
THREE TYPICAL PARTS
NORMALIZED TO +25°C
MAX9039
REFERENCE OUTPUT VOLTAGE
TEMPERATURE DRIFT
MAX9039/43/50-53 toc19
TEMPERATURE (°C)
OUTPUT VOLTAGE CHANGE (mV)
8060
40
20
0-20
-2
-1
0
1
-3
-40
THREE TYPICAL PARTS
NORMALIZED TO +25°C
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, IOUT = 0A, IREF = 0A, TA= +25°C, unless otherwise noted.)
B
A
100ns/div
PROPAGATION DELAY (tPD+)
MAX9039/43/50-53 toc11
A = IN+, 50mV/div
B = OUT, 2V/div
B
A
100ns/div
PROPAGATION DELAY (tPD-)
MAX9039/43/50-53 toc12
A = IN+, 50mV/div
B = OUT, 2V/div
B
C
A
100ns/div
SWITCHING CURRENT (OUT RISING EDGE)
MAX9039/43/50-53 toc13
A = IN+, 100mV/div
B = OUT, 5V/div
C = ICC, 1mA/div
-1500
-500
-1000
500
0
1500
1000
2000
-500 -100-300 100 300 500
LOAD REGULATION
MAX9039/43/50-53 toc21
LOAD CURRENT (μA)
REFERENCE OUTPUT VOLTAGE CHANGE (μV)
TA = +25°C
TA = +85°C
TA = -40°C
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
8 _______________________________________________________________________________________
Pin Description
-200
-100
-150
0
-50
100
50
150
2.5 3.5 4.03.0 4.5 5.0 5.5
LINE REGULATION
MAX9039/43/50-53 toc20
INPUT VOLTAGE (V)
REFERENCE OUTPUT VOLTAGE CHANGE (μV)
TA = +25°C
TA = +85°C
TA = -40°C
Typical Operating Characteristics (continued)
(VCC = 5V, VEE = 0V, VCM = 0V, IOUT = 0A, IREF = 0A, TA= +25°C, unless otherwise noted.)
FUNCTION
MAX9042
MAX9052
MAX9039 MAX9043
MAX9053
Comparator Output
Negative Supply Voltage
Comparator Noninverting Input
Reference Voltage Output
Comparator A Output
No Connection. Not internally connected.
Comparator Inverting Input
Positive Supply Voltage
Comparator A Inverting Input
Comparator B Output
Comparator B Inverting Input
Comparator B Noninverting Input
Comparator A Noninverting Input
NAME
SO
6
4
3
1
—
5, 8
2
7
—
—
—
—
—
SO/µMAX
—
4
—
2
1
—
—
8
—
7
6
5
3
OUT
VEE
IN+
REF
OUTA
N.C.
IN-
VCC
INA-
OUTB
INB-
INB+
INA+
SOT23 µMAX
A2 1 —
A1 2 5
UCSP
B1 3 —
B3 5 2
— — 1
— — 9
B2 4 —
A3 610
— — 3
— — 8
— — 7
— — 6
— — 4
MAX9041
MAX9051
PIN
MAX9040
MAX9050
1
2
SOT23
3
4
—
—
—
5
—
—
—
—
—
Detailed Description
The MAX9039–MAX9043 and MAX9050–MAX9053 fea-
ture single/dual, low-power, low-voltage comparators
and a precision voltage reference. They operate from a
single 2.5V to 5.5V (MAX9039/MAX904_) or 2.7V to
5.5V (MAX905_) supply. The single comparators with
reference, (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 mini-
mizes 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 curvature-
correction 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 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 lim-
its. Input bias current is typically 1.0pA if the input volt-
age 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 volt-
age 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-mag-
nitude more current during switching than during
steady-state operation. However, with this family of com-
parators, 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 compara-
tor switching currents. Another advantage realized in
high-speed, battery-powered applications is a substan-
tial increase in battery life.
Applications Information
Additional Hysteresis
These comparators have ±3mV internal hysteresis.
Additional hysteresis can be generated with two resis-
tors using positive feedback (Figure 1). Use the follow-
ing procedure to calculate resistor values:
1) Calculate the trip points of the comparator using
these formulas:
and
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:
VV R
RR
TL REF
=−
+
⎛
⎝
⎜⎞
⎠
⎟
12
12
VV
VVR
RR
TH REF
CC REF
=+ −
()
+
⎛
⎝
⎜
⎜
⎜
⎞
⎠
⎟
⎟
⎟
2
12
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
_______________________________________________________________________________________ 9
MAX9039–MAX9043
MAX9050–MAX9053
OUT
IN+
IN-
R2
R1
VIN
VREF
VCC
VEE
VCC
Figure 1. Additional Hysteresis
VVVVR
RR
HYS TH TL CC
=−= +
⎛
⎝
⎜⎞
⎠
⎟
2
12
MAX9039–MAX9043/MAX9050–MAX9053
3) In this example, let VCC = 5V and VREF = 2.5V:
and
4) Select R2. In this example, we will choose 1kΩ.
5) Select VHYS. In this example, we will choose 50mV.
6) Solve for R1:
where R1 ≈ 100kΩ, VTH = 2.525V, and VTL = 2.475V.
Board Layout and Bypassing
Power-supply bypass capacitors are not typically need-
ed, 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 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 experi-
ence step changes, an output capacitor will reduce the
amount of overshoot (or undershoot) and assist the cir-
cuit’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 dig-
ital output signal. Be sure to choose R1 and C1 so that:
where fCAR is the fundamental carrier frequency of the
digital data stream.
UCSP Package Consideration
For general UCSP package information and PC layout
considerations, please refer to Maxim Application
Note,"Wafer-Level Chip-Scale Package."
UCSP Reliability
The chip-scale package (UCSP) represents a unique
packaging form factor that may not perform equally to a
packaged product through traditional mechanical relia-
bility tests. UCSP reliability is integrally linked to the
user’s assembly methods, circuit board material, and
usage environment. The user should closely review
these areas when considering use of a UCSP.
Performance through Operating Life Test and Moisture
Resistance remains uncompromised as it is primarily
determined by the wafer-fabrication process.
Mechanical stress performance is a greater considera-
tion for a UCSP. UCSPs are attached through direct
solder contact to the user’s PC board, foregoing the
inherent stress relief of a packaged product lead frame.
Solder joint contact integrity must be considered.
Information on Maxim’s qualification plan, test data,
and recommendations are detailed in the UCSP appli-
cation note, which can be found on Maxim’s website at
www.maxim-ic.com.
Chip Information
PROCESS: BiPOLAR
f1
2R1C1
CAR >> π
0 050 5 1000
1 1000
.=+
⎛
⎝
⎜⎞
⎠
⎟
R
VVR
RR
HYS CC
=+
⎛
⎝
⎜⎞
⎠
⎟
2
12
VR
RR
TL =−
+
⎛
⎝
⎜⎞
⎠
⎟
25 1 2
12
.
VR
RR
TH =+ +
⎛
⎝
⎜⎞
⎠
⎟
25 25 2
12
..
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
10 ______________________________________________________________________________________
MAX9039–MAX9043
MAX9050–MAX9053
OUT
IN+
IN-
10kΩ
0.1μF
VCC
VIN
VEE
VCC
Figure 2. Time Averaging of the Input Signal for Data Recovery
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
______________________________________________________________________________________ 11
Functional Diagrams
MAX9040
MAX9050
OUT
1
5
3
6 (A2)
7 (A3)
3 (B1)
IN+ REF
VEE 2
VCC REF
MAX9039
MAX9041
MAX9051
OUT
IN+
( ) MAX9039 UCSP BUMPS.
IN-
REF
VEE 4 (A1)
8
7
6
5
10
8
7
6
1 (B3)
2 (B2)
VCC
REF
MAX9042
MAX9052
OUTA
1
2
3
4
1
2
3
4
5
OUTB
INA+ INB-
INB+
REF
VEE
VCC
REF
MAX9043
MAX9053
OUTA
OUTB
INA+
INA- INB-
INB+
REF
VEE
VCC
REF
4
Selector Guide
REF2.0481MAX9040
REF/Uncommitted
REF/Uncommitted2.500
Uncommitted/Uncommitted
2
2.5002
MAX9052
2.048
MAX9053
Uncommitted/Uncommitted
2
2.0482
MAX9042
MAX9043
REF2.500
Uncommitted
1
2.5001
MAX9050
MAX9051
Uncommitted1.230
VREF
(V)
COMPARATORS
PER PACKAGE
Uncommitted
1
2.0481
MAX9039
MAX9041
PART IN- CONNECTIONS
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
12 ______________________________________________________________________________________
MAX9039
MAX9041/MAX9043
MAX9051/MAX9053
1.23V/2.048V/2.500V
OUT
IN+
IN-
REF
VIN VCC
0.1μF
VEE
VCC
Typical Operating Circuit
Ordering Information (continued)
Pin Configurations (continued)
VEE
IN-IN+
16VCC
5REF
OUT
MAX9041
MAX9051
SOT23
2
34
OUT
N.C.VEE
1
2
8
7
N.C.
VCC
IN-
IN+
REF
SO
3
4
6
5
MAX9041
MAX9051 INB-
INB+VEE
1
2
8
7
VCC
OUTBREF
INA+
OUTA
μMAX/SO
3
4
6
5
MAX9042
MAX9052
1
2
3
4
5
10
9
8
7
6
VCC
N.C.
OUTB
INB-INA+
INA-
REF
OUTA
MAX9043
MAX9053
μMAX
INB+VEE
TOP VIEW
PIN-
PACKAGE
8 µMAX
8 SO
8 SO
10 µMAX
10 µMAX
5 SOT23
5 SOT23
6 SOT23
6 SOT23
8 SO
8 µMAX-40°C to +85°CMAX9042BEUA —
-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
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGEPART
MAX9042AEUA
MAX9042AESA
MAX9042BESA
MAX9043AEUB
MAX9043BEUB
MAX9050AEUK-T
MAX9050BEUK-T
MAX9051AEUT-T
MAX9051BEUT-T
MAX9051AESA
TOP
MARK
—
—
—
—
—
ADNW
ADNY
AAHG
AAHI
—
8 SO-40°C to +85°CMAX9051BESA —
8 µMAX
8 µMAX
8 SO-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
MAX9052AEUA
MAX9052BEUA
MAX9052AESA
8 SO-40°C to +85°C
AAHG
AAHI
—
MAX9052BESA —
10 µMAX-40°C to +85°CMAX9053BEUB —
10 µMAX-40°C to +85°C
MAX9053AEUB —
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
______________________________________________________________________________________ 13
6L, UCSP.EPS
G
1
1
21-0097
PACKAGE OUTLINE, 3x2 UCSP
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
6 UCSP B6-3 21-0097
5 SOT23 — 21-0057
6 SOT23 — 21-0058
8 SO — 21-0041
8 µMAX — 21-0036
10 µMAX — 21-0061
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
14 ______________________________________________________________________________________
SOT-23 5L .EPS
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
______________________________________________________________________________________ 15
SOICN .EPS
PACKAGE OUTLINE, .150" SOIC
1
1
21-0041 B
REV.DOCUMENT CONTROL NO.APPROVAL
PROPRIETARY INFORMATION
TITLE:
TOP VIEW
FRONT VIEW
MAX
0.010
0.069
0.019
0.157
0.010
INCHES
0.150
0.007
E
C
DIM
0.014
0.004
B
A1
MIN
0.053A
0.19
3.80 4.00
0.25
MILLIMETERS
0.10
0.35
1.35
MIN
0.49
0.25
MAX
1.75
0.050
0.016L0.40 1.27
0.3940.386D
D
MINDIM
D
INCHES
MAX
9.80 10.00
MILLIMETERS
MIN MAX
16 AC
0.337 0.344 AB8.758.55 14
0.189 0.197 AA5.004.80 8
N MS012
N
SIDE VIEW
H 0.2440.228 5.80 6.20
e 0.050 BSC 1.27 BSC
C
HE
eBA1
A
D
0∞-8∞
L
1
VARIATIONS:
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
16 ______________________________________________________________________________________
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
6LSOT.EPS
PACKAGE OUTLINE, SOT 6L BODY
21-0058
2
1
I
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
______________________________________________________________________________________ 17
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
PACKAGE OUTLINE, SOT 6L BODY
21-0058
2
2
I
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
18 ______________________________________________________________________________________
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
10LUMAX.EPS
α
α
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
______________________________________________________________________________________ 19
8LUMAXD.EPS
α
α
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
MAX9039–MAX9043/MAX9050–MAX9053
Micropower, Single-Supply, UCSP/SOT23
Comparator + Precision Reference ICs
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
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 specs —
4 10/02 Adding UCSP package for MAX9039 —
5 10/07 Adding input current ratings in Abs Max, style changes —
6 3/09 Update Chip Information, Package Info, correct MAX9053 part number, style
changes 1, 2, 10, 12–19