General Description
The MAX9030/MAX9031/MAX9032/MAX9034 single/
dual/quad comparators are optimized for single-supply
applications from +2.5V to +5.5V but can also be oper-
ated from dual supplies. These comparators have a
188ns propagation delay and consume 35µA of supply
current per comparator over the -40°C to +125°C oper-
ating temperature range. The combination of low-
power, single-supply operation down to +2.5V, and
ultra-small footprint makes these devices ideal for
portable applications.
The MAX9030 is a low-cost single comparator with
shutdown. The MAX9031, MAX9032, and MAX9034 are
low-cost single, dual, and quad comparators without
shutdown, respectively. The comparators’ 4mV of built-
in hysteresis provides noise immunity and prevents
oscillations even with a slow-moving input signal. The
input common-mode range extends from the negative
supply to within 1.1V of the positive supply. The design
of the comparator output stage substantially reduces
switching current during output transitions, virtually
eliminating power-supply glitches.
The MAX9030 single comparator with shutdown is avail-
able in the space-saving 6-pin SC70 and SOT23 pack-
ages. The MAX9031 single comparator is available in tiny
5-pin SC70 and SOT23 packages. The MAX9032 dual
comparator is available in 8-pin SOT23 and µMAX®
packages, and the MAX9034 quad comparator is avail-
able in a 14-pin TSSOP package.
________________________Applications
Features
Low-Cost Solution Available in Space-Saving
SC70 Packages (MAX9030/MAX9031)
+2.5 to +5.5V Single-Supply Voltage Range
Comparator Output Swings Rail-to-Rail
Internal 4mV Comparator Hysteresis
188ns Propagation Delay
Low 35µA Supply Current
No Phase Reversal for Overdriven Inputs
Space-Saving Packages
5-Pin SC70 (MAX9031)
6-Pin SC70 (MAX9030)
8-Pin SOT23 (MAX9032)
14-Pin TSSOP (MAX9034)
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
________________________________________________________________
Maxim Integrated Products
1
TOP VIEW
VSS
OUTIN-
15VDD
IN+
MAX9031
SC70/SOT23
2
34
INB-
INB+VSS
1
2
8
7
VDD
OUTBINA-
INA+
OUTA
SOT23/µMAX/SO
3
4
6
5
MAX9032
14
13
12
11
10
9
8
1
2
3
4
5
6
7
OUTD
IND-
IND+
VSS
VDD
INA+
INA-
OUTA
MAX9034
INC+
INC-
OUTCOUTB
INB-
INB+
TSSOP/SO
VSS
OUTIN-
1 6 VDD
5
IN+
MAX9030
SC70/SOT23
2
34
SHDN
Pin Configurations
19-1767; Rev 1; 5/10
Ordering Information
+
Denotes a lead-free(Pb)/RoHS-compliant package.
T = Tape and reel.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Battery-Powered
Portable Systems
Mobile Communications
Sensor Signal Detection
Photodiode Preamps
Digital Line Receivers
Keyless Entry Systems
Threshold Detectors/
Discriminators
Typical Application Circuit appears at end of data sheet.
PART TEMP. RANGE PIN-PACKAGE
M A X9 0 3 0 AX T+ T -40°C to +125°C 6 SC70
MAX9030AUT+ T -40°C to +125°C 6 SOT23
MAX9031AXK+ T -40°C to +125°C 5 SC70
MAX9031AUK+ T -40°C to +125°C 5 SOT23
M A X 9 0 3 2 A KA + T -40°C to +125°C 8 SOT23
MAX9032AUA+ -40°C to +125°C 8 µMAX
MAX9032ASA+ -40°C to +125°C 8 SO
M A X9 0 3 4 AUD+ -40°C to +125°C 14 TSSOP
MAX9034AS D + -40°C to +125°C 14 SO
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VSS = 0, VCM = 0, VSHDN = +5V (Note 1), TA= -40°C to +125°C, 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 (VDD to VSS) ....................................-0.3V to +6V
Voltage Inputs (IN+, IN- to VSS). ................-0.3V to (VDD + 0.3V)
Differential Input Voltage (IN+ to IN-) .................................+6.6V
Output Short-Circuit
Duration ...............................................2s to Either VDD or VSS
Current into Any Pin ............................................................20mA
Continuous Power Dissipation (TA= +70°C) ...............................
5-Pin SC70 (derate 3.1mW/°C above +70°C)...............247mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW
6-Pin SC70 (derate 3.1mW/°C above +70°C)...............245mW
6-Pin SOT23 (derate 8.7mW/°C above +70°C).............696mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C).............727mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) ..........727mW
14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW
Operating Temperature Range
Automotive Application...................................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range VDD Guaranteed by PSRR test 2.5 5.5 V
S upp l y C ur rent p er C om par ator IDD 35 55 µA
Supply Current in Shutdown V
S HDN = 0 (Note 1) 0.05 1 µA
Shutdown Input Bias Current V
S HDN = 0 to VDD (Note 1) 0.1 2.5 µA
Shutdown Logic High (Note 1) 0.7 × V
D D V
Shutdown Logic Low (Note 1) 0.3 × V
D D V
Input Offset Voltage VOS (Note 3) ±1±5mV
Input Offset Voltage
Temperature Coefficient TCVOS ±1 µV/°C
Hysteresis (Note 4) 4 mV
Input Bias Current IBIAS 880nA
Input Offset Current IOS ±2±60 nA
Common-Mode Voltage Range VCM Guaranteed by CMRR test VSS VDD - 1.1 V
C om m on- M od e Rej ecti on Rati o CMRR V
S S
≤ V
C M
≤ ( V
D D
- 1.1V ) , V
D D
= + 5.5V 72 100 d B
Power-Supply Rejection Ratio PSRR VDD = +2.5V to +5.5V 72 100 dB
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +5V, VSS = 0, VCM = 0, VSHDN = +5V (Note 1), TA= -40°C to +125°C, unless otherwise noted. Typical values are at
TA= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ISOURCE = 10µA 2
VOH = VDD - VOUT,
(VIN+ - VIN-) ≥ 20mV ISOURCE = 4mA 165 400
ISINK = 10µA 2
Output Voltage-Swing VOL, VOH VOL = VOUT - VSS,
(VIN- - VIN+) ≥ 20mV ISINK = 4mA 165 400
mV
Output Short-Circuit Current ISC 45 m A
Shutdown Mode Output
Leakage
V SHDN ≤ (0.3 × VDD), VOUT = 0 to VDD
(Note 1) ±0.01 ±3.5 µA
VOD = 10mV 228
Propagation Delay tP D +, tP D - RL = 10kΩ,
CL = 15pF (Note 5) VOD = 100mV 188 ns
Rise/Fall-Time tR, tFVDD = +5V, RL = 10kΩ, CL = 15pF (Note 6) 20 ns
Shutdown Delay Time ON/OFF (Note 1) 40 ns
Shutdown Delay Time OFF/ON (Note 1) 400 ns
Power-On Time RL = 10kΩ, CL = 15pF 200 ns
Maximum Capacitive Load CLNo sustained oscillations 150 pF
Note 1: MAX9030 only.
Note 2: All devices are production tested at +25°C. All temperature limits are guaranteed by design.
Note 3: Comparator Input Offset is defined as the center of the hysteresis zone.
Note 4: Hysteresis is defined as the difference of the trip points required to change comparator output states.
Note 5: VOD is the overdrive that is beyond the offset and hysteresis-determined trip points.
Note 6: Rise and fall times are measured between 10% and 90% at OUT.
Typical Operating Characteristics
(VDD = +5V, VSS = 0, VCM = 0, RL= 10kΩ, CL= 15pF, VOD= 100mV, TA= +25°C, unless otherwise noted.)
28
32
30
36
34
38
40
2.5 3.5 4.03.0 4.5 5.0 5.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9030/1/2/4 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
32
34
33
36
35
37
38
-50 25 50-25 0 75 100 125
SUPPLY CURRENT
vs. TEMPERATURE
MAX9030/1/2/4 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
1000
10
10
100
OUTPUT TRANSITION FREQUENCY (Hz)
SUPPLY CURRENT (µA)
SUPPLY CURRENT
vs. OUTPUT TRANSITION FREQUENCY
100 1k 10k 100k 1M
MAX9030/1/2/4 toc03
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = 0, RL= 10kΩ, CL= 15pF, VOD = 100mV, TA= +25°C, unless otherwise noted.)
-0.5
-0.2
-0.3
-0.4
0
-0.1
0.4
0.3
0.2
0.1
0.5
-50 -25 0 25 50 75 100 125
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9030/1/2/4 toc04
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (mV)
0
40
20
100
80
60
140
160
120
180
0 1.5 2.00.5 1.0 2.5 3.0 3.5 4.0 4.5
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
MAX9030/1/2/4 toc05
SOURCE CURRENT (mA)
VDD - VOUT
OUTPUT HIGH VOLTAGE (mV)
0
40
20
100
80
60
140
160
120
180
0 1.5 2.00.5 1.0 2.5 3.0 3.5 4.0 4.5
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
MAX9030/1/2/4 toc06
SINK CURRENT (mA)
OUTPUT LOW VOLTAGE (mV)
30
40
35
50
45
55
60
-50 25 50-25 0 75 100 125
OUTPUT SHORT-CIRCUIT (SINK) CURRENT
vs. TEMPERATURE
MAX9030/1/2/4 toc07
TEMPERATURE (°C)
SHORT-CIRCUIT SINK CURRENT (mA)
30
40
35
50
45
55
60
-50 25 50-25 0 75 100 125
OUTPUT SHORT-CIRCUIT (SOURCE) CURRENT
vs. TEMPERATURE
MAX9030/1/2/4 toc08
TEMPERATURE (°C)
SHORT-CIRCUIT SOURCE CURRENT (mA)
100
160
140
120
180
200
220
240
260
280
300
05025 75 100 125 150
PROPAGATION DELAY vs. CAPACITIVE LOAD
(VDD = 2.7V)
MAX9030/1/2/4 toc09
CAPACITIVE LOAD (pF)
PROPAGATION DELAY (ns)
100
160
140
120
180
200
220
240
260
280
300
05025 75 100 125 150
PROPAGATION DELAY vs. CAPACITIVE LOAD
(VDD = +5V)
MAX9030/1/2/4 toc10
CAPACITIVE LOAD (pF)
PROPAGATION DELAY (ns)
tPD-
tPD+
100
160
140
120
200
180
280
260
240
220
300
-50 -25 0 25 50 75 100 125
PROPAGATION DELAY vs. TEMPERATURE
MAX9030/1/2/4 toc11
TEMPERATURE (°C)
PROPAGATION DELAY (ns)
tPD-
tPD+
50
125
100
75
175
150
275
250
225
200
300
0 20 40 60 80 100 120 140
PROPAGATION DELAY
vs. INPUT OVERDRIVE VOLTAGE
MAX9030/1/2/4 toc12
INPUT OVERDRIVE VOLTAGE (mV)
PROPAGATION DELAY (ns)
tPD-
tPD+
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
_______________________________________________________________________________________
5
TIME (200ns/div)
PROPAGATION DELAY
MAX9030/1/2/4 toc13
OUT
2V/div
IN+ - IN-
200mV/div
TIME (2µs/div)
OUTPUT SWITCHING CURRENT, RISING
MAX9030/1/2/4 toc14
SWITCHING
CURRENT
200µA/div
IN+ - IN-
5V/div
OUT
5V/div
TIME (1µs/div)
OUTPUT SWITCHING CURRENT, FALLING
MAX9030/1/2/4 toc15
SWITCHING
CURRENT
50µA/div
IN+ - IN-
5V/div
OUT
5V/div
TIME (100ns/div)
SINUSOID 1MHz RESPONSE AT 1.25MHz
VOD = 100mV
MAX9030/1/2/4 toc16
IN+ - IN-
100mV/div
OUT
2V/div
TIME (100ns/div)
SINUSOID 1MHz RESPONSE AT 1.25MHz
VOD = 10mV
MAX9030/1/2/4 toc17
IN+ - IN-
10mV/div
OUT
2V/div
TIME (200ns/div)
POWER-UP DELAY
MAX9030/1/2/4 toc18
VDD
OUT
2.5V/div
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = 0, RL= 10kΩ, CL= 15pF, VOD = 100mV, TA= +25°C, unless otherwise noted.)
MAX9030/MAX9031/MAX9032/MAX9034
Detailed Description
The MAX9030/MAX9031/MAX9032/MAX9034 are sin-
gle/dual/quad low-cost comparators. They have an
operating supply voltage from +2.5V to +5.5V when
operating from a single supply and from ±1.25V to
±2.75V when operating from dual power supplies, and
consume only 35µA. Their common-mode input voltage
range extends from the negative supply to within 1.1V
of the positive supply. Internal hysteresis ensures clean
output switching, even with slow-moving input signals.
Shutdown Mode
The MAX9030 comparator comes with a power-saving
shutdown mode. When in shutdown, the supply current
drops from a typical 35µA to 0.05µA, and the outputs
become high impedance. SHDN has a high input imped-
ance and typically draws 0.1µA when connected to VSS
or VDD. A maximum logic low voltage of 0.3V VDD
applied to SHDN places the device in the shutdown
mode. A minimum logic high voltage of 0.7V VDD
applied to SHDN will enable normal operation. To dis-
able shutdown, connect SHDN to VDD.
Applications Information
Adding Hysteresis
Hysteresis extends the comparator’s noise margin by
increasing the upper threshold and decreasing the
lower threshold. A voltage-divider from the output of the
comparator sets the trip voltage. Therefore, the trip volt-
age is related to the output voltage.
These comparators have 4mV 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:
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
6 _______________________________________________________________________________________
Pin Description
PIN
M A X9 0 3 0 M A X9 0 3 1 M A X9 0 3 2 M A X9 0 3 4
NAME FUNCTION
1 1 — — IN+ Comparator Noninverting Input
224 11V
SS N eg ati ve S up p l y V ol tag e. Byp ass w i th a 0.1µF cap aci tor .
3 3 — — IN- Comparator Inverting Input
4 4 — — OUT Comparator Output
5—— —SHDN Shutdown
658 4 V
DD P osi ti ve S up p l y V ol tag e. Byp ass w i th a 0.1µF cap aci tor .
— — 1 1 OUTA Comparator A Output
— — 2 2 INA- Comparator A Inverting Input
— — 3 3 INA+ Comparator A Noninverting Input
— — 5 5 INB+ Comparator B Noninverting Input
— — 6 6 INB- Comparator B Inverting Input
— — 7 7 OUTB Comparator B Output
— — — 8 OUTC Comparator C Output
— — — 9 INC- Comparator C Inverting Input
— — — 10 INC+ Comparator C Noninverting Input
— — — 12 IND+ Comparator D Noninverting Input
— — — 13 IND- Comparator D Inverting Input
— — — 14 OUTD Comparator D Output
1) Find the trip points of the comparator using these
formulas:
VTH = VREF + [((VDD - VREF)R2) / (R1 + R2)
VTL = VREF(1 - (R2 / (R1 + R2))]
where VTH is the threshold voltage at which the com-
parator switches its output from high to low as VIN
rises above the trip point. VTL is the threshold volt-
age at which the comparator switches its output from
low to high as VIN drops below the trip point.
2) The hysteresis band will be:
VHYS = VTH - VTL = VDD(R2 / (R1 + R2))
3) In this example, let VDD = +5V and VREF = +2.5V.
VTH = 2.5V + 2.5(R2 / (R1 + R2))V
and
VTL = 2.5[1 - (R2 / (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.
VHYS = VDD(R2 / (R1 + R2))
0.050V = 5(1000Ω/(R1 + 1000Ω))V
where R1 ≈100kΩ, VTH = 2.525V, and VTL = 2.475V.
The above-described design procedure assumes rail-
to-rail output swing. If the output is significantly loaded,
the results should be corrected.
Board Layout and Bypassing
Use 100nF bypass as a starting point. Minimize signal
trace lengths to reduce stray capacitance. Minimize the
capacitive coupling between IN- and OUT. For slow-
moving input signals (rise-time > 1ms), use a 1nF
capacitor between IN+ and IN-.
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:
ƒCAR >> 1 / (2πR1C1)
where ƒCAR is the fundamental carrier frequency of the
digital data stream.
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
_______________________________________________________________________________________ 7
MAX9031
OUT
IN+
IN-
R2
R1
VIN
VREF
VDD
VSS
VDD
Figure 1. Additional Hysteresis
MAX9031
OUT
IN+
IN-
10kΩ
0.1µF
VDD
VIN
VSS
VDD
Figure 2. Time Averaging of the Input Signal for Data Recovery
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
8 _______________________________________________________________________________________
MAX9031
OUT
IN+
IN-
VIN
VDD
VDD
VIN
VREF
R1
R2
RL
0.1µF
Typical Application Circuit Chip Information
TRANSISTOR COUNT/MAX9030/MAX9031: 123
TRANSISTOR COUNT/MAX9032: 184
TRANSISTOR COUNT/MAX9034: 368
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
_______________________________________________________________________________________ 9
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.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 DOCUMENT NO.
5 SC70 X5+1 21-0076
6 SC70 X6SN+1 21-0077
5 SOT23 U5+2 21-0057
6 SOT23 U6SN+1 21-0058
8 SOT23 K8+5 21-0078
8 SO U8+2 21-0262
14 SO S14+1 21-0041
8 µMAX U8+3 21-0036
14 TSSOP U14+3 21-0066
MAX9030/MAX9031/MAX9032/MAX9034
Low-Cost, Ultra-Small, Single/Dual/Quad
Single-Supply Comparators
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.
10
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7610
© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 10/00 Initial release —
1 5/10 Removed future product reference and added lead-free parts 1
