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19-1767; Rev 0; 10/00
Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators
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 operated from dual supplies. These comparators have a 188ns propagation delay and consume 35A of supply current per comparator over the -40C to +125C operating temperature range. The combination of lowpower, 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 builtin 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 available in the space-saving 6-pin SC70 and SOT23 packages. 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 MAX packages, and the MAX9034 quad comparator is available in a 14-pin TSSOP package.
Features
o Low-Cost Solution Available in Space-Saving SC70 Packages (MAX9030/MAX9031) o +2.5 to +5.5V Single-Supply Voltage Range o Comparator Output Swings Rail-to-Rail(R) o Internal 4mV Comparator Hysteresis o 188ns Propagation Delay o Low 35A Supply Current o No Phase Reversal for Overdriven Inputs o Space-Saving Packages 5-Pin SC70 (MAX9031) 6-Pin SC70 (MAX9030) 8-Pin SOT23 (MAX9032) 14-Pin TSSOP (MAX9034)
MAX9030/MAX9031/MAX9032/MAX9034
Ordering Information
PART MA X9 03 0AX T- T MAX9030AUT-T MAX9031AXK-T MAX9031AUK-T MAX9 03 2AKA-T MAX9032AUA* MAX9032ASA MA X9 03 4AUD MAX9034AS D TEMP. RANGE -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C PIN-PACKAGE 6 SC70 6 SOT23 5 SC70 5 SOT23 8 SOT23 8 MAX 8 SO 14 TSSOP 14 SO
________________________Applications
Battery-Powered Portable Systems Mobile Communications Sensor Signal Detection Photodiode Preamps Digital Line Receivers Keyless Entry Systems Threshold Detectors/ Discriminators
*Future product-contact factory for availability. Typical Application Circuit appears at end of data sheet.
Pin Configurations
TOP VIEW
IN+ 1 6 VDD IN+ 1 5 VDD OUTA 1 INA- 2 8 7 VDD OUTB INBVDD 4 IN- 3 4 OUT IN- 3 4 OUT VSS 4 5 INB+ INB+ 5 INB- 6 OUTA 1 INAINA+ 6 2 3 14 OUTD 13 IND12 IND+
VSS 2
MAX9030
5
SHDN
VSS 2
MAX9031
MAX9032
INA+ 3
MAX9034
11 VSS 10 INC+ 9 8 INCOUTC
SC70-6/SOT23-6
SC70-5/SOT23-5
SOT23-8/MAX-8/ SO-8
OUTB 7
TSSOP-14/SO-14
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. ________________________________________________________________ Maxim Integrated Products 1
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.
Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators MAX9030/MAX9031/MAX9032/MAX9034
ABSOLUTE MAXIMUM RATINGS
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 = +70C) ............................... 5-Pin SC70 (derate 3.1mW/C above +70C) ...............247mW 5-Pin SOT23 (derate 7.1mW/C above +70C).............571mW 6-Pin SC70 (derate 3.1mW/C above +70C) ...............245mW 6-Pin SOT23 (derate 8.7mW/C above +70C).............696mW 8-Pin SOT23 (derate 9.1mW/C above +70C).............727mW 8-Pin MAX (derate 4.5mW/C above +70C) ..............362mW 8-Pin SO (derate 5.88mW/C above +70C).................471mW 14-Pin TSSOP (derate 9.1mW/C above +70C) ..........727mW 14-Pin SO (derate 8.33mW/C above +70C)...............667mW Operating Temperature Range Automotive Application...................................-40C to +125C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) ................................ +300C
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
(VDD = +5V, VSS = 0, VCM = 0, V SHDN = +5V (Note 1), TA = -40C to +125C, unless otherwise noted. Typical values are at TA = +25C.) (Note 2)
PARAMETER Operating Voltage Range Supply Current per Comparator Supply Current in Shutdown Shutdown Input Bias Current Shutdown Logic High Shutdown Logic Low Input Offset Voltage Input Offset Voltage Temperature Coefficient Hysteresis Input Bias Current Input Offset Current Common-Mode Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio IBIAS IOS VCM CMRR PSRR Guaranteed by CMRR test VSS VCM (VDD - 1.1V), VDD = +5.5V VDD = +2.5V to +5.5V VSS 72 72 100 100 VOS TCVOS (Note 4) SYMBOL VDD IDD V S HDN = 0 (Note 1) V S HDN = 0 to VDD (Note 1) (Note 1) (Note 1) (Note 3) 1 1 4 8 2 80 60 VDD - 1.1 0.7 x VDD 0.3 x VDD 5 CONDITIONS Guaranteed by PSRR test MIN 2.5 35 0.05 0.1 TYP MAX 5.5 55 1 2.5 UNITS V A A A V V mV V/C mV nA nA V dB dB
2
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Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +5V, VSS = 0, VCM = 0, V SHDN = +5V (Note 1), TA = -40C to +125C, unless otherwise noted. Typical values are at TA = +25C.) (Note 2)
PARAMETER SYMBOL CONDITIONS VOH = VDD - VOUT, (VIN+ - VIN-) 20mV VOL = VOUT - VSS, (VIN- - VIN+) 20mV ISOURCE = 10A ISOURCE = 4mA ISINK = 10A ISINK = 4mA MIN TYP 2 165 2 165 45 V SHDN (0.3 x VDD), VOUT = 0 to VDD (Note 1) tPD+, tPD tR , t F RL = 10k, CL = 15pF (Note 5) (Note 1) (Note 1) RL = 10k, CL = 15pF CL No sustained oscillations VOD = 10mV VOD = 100mV 0.01 228 188 20 40 400 200 150 3.5 400 mA A ns ns ns ns ns pF 400 mV MAX UNITS
MAX9030/MAX9031/MAX9032/MAX9034
Output Voltage-Swing
VOL, VOH
Output Short-Circuit Current Shutdown Mode Output Leakage Propagation Delay Rise/Fall-Time Shutdown Delay Time ON/OFF Shutdown Delay Time OFF/ON Power-On Time Maximum Capacitive Load
ISC
VDD = +5V, RL = 10k, CL = 15pF (Note 6)
Note 1: Note 2: Note 3: Note 4: Note 5: Note 6:
MAX9030 only. All devices are production tested at +25C. All temperature limits are guaranteed by design. Comparator Input Offset is defined as the center of the hysteresis zone. Hysteresis is defined as the difference of the trip points required to change comparator output states. VOD is the overdrive that is beyond the offset and hysteresis-determined trip points. Rise and fall times are measured between 10% and 90% at OUT.
Typical Operating Characteristics
(VDD = +5V, VSS = 0, VCM = 0, RL = 10k, CL = 15pF, VOD= 100mV, TA = +25C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX9030/1/2/4 toc01
SUPPLY CURRENT vs. TEMPERATURE
MAX9030/1/2/4 toc02
SUPPLY CURRENT vs. OUTPUT TRANSITION FREQUENCY
MAX9030/1/2/4 toc03
40 38 SUPPLY CURRENT (A) 36 34 32 30 28 2.5 3.0 3.5 4.0 4.5 5.0
38 37 SUPPLY CURRENT (A) 36 35 34 33 32
1000
SUPPLY CURRENT (A)
100
5.5
-50
-25
0
25
50
75
100
125
10 10 100 1k 10k 100k 1M OUTPUT TRANSITION FREQUENCY (Hz)
SUPPLY VOLTAGE (V)
TEMPERATURE (C)
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3
Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators MAX9030/MAX9031/MAX9032/MAX9034
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = 0, RL = 10k, CL = 15pF, VOD = 100mV, TA = +25C, unless otherwise noted.)
INPUT OFFSET VOLTAGE vs. TEMPERATURE
MAX9030/1/2/4 toc04
OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT
MAX9030/1/2/4 toc05
OUTPUT LOW VOLTAGE vs. SINK CURRENT
160 OUTPUT LOW VOLTAGE (mV) 140 120 100 80 60 40 20 0
MAX9030/1/2/4 toc06
0.5 0.4 INPUT OFFSET VOLTAGE (mV) 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 -50 -25 0 25 50 75 100
180 160 VDD - VOUT OUTPUT HIGH VOLTAGE (mV) 140 120 100 80 60 40 20 0
180
125
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 SOURCE CURRENT (mA)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 SINK CURRENT (mA)
TEMPERATURE (C)
OUTPUT SHORT-CIRCUIT (SINK) CURRENT vs. TEMPERATURE
MAX9030/1/2/4 toc07
OUTPUT SHORT-CIRCUIT (SOURCE) CURRENT vs. TEMPERATURE
MAX9030/1/2/4 toc08
PROPAGATION DELAY vs. CAPACITIVE LOAD (VDD = 2.7V)
280 PROPAGATION DELAY (ns) 260 240 220 200 180 160 140 120
MAX9030/1/2/4 toc09
60 SHORT-CIRCUIT SINK CURRENT (mA) 55 50 45 40 35 30 -50 -25 0 25 50 75 100
60 SHORT-CIRCUIT SOURCE CURRENT (mA) 55 50 45 40 35 30
300
100 -50 -25 0 25 50 75 100 125 0 25 50 75 100 125 150 TEMPERATURE (C) CAPACITIVE LOAD (pF)
125
TEMPERATURE (C)
PROPAGATION DELAY vs. CAPACITIVE LOAD (VDD = +5V)
MAX9030/1/2/4 toc10
PROPAGATION DELAY vs. TEMPERATURE
MAX9030/1/2/4 toc11
PROPAGATION DELAY vs. INPUT OVERDRIVE VOLTAGE
275 PROPAGATION DELAY (ns) 250 225 200 175 150 125 100 75 50 tPD+ tPDMAX9030/1/2/4 toc12
300 280 PROPAGATION DELAY (ns) 260 240 220 200 180 160 140 120 100 0 25 50 75 100 125 tPD+ tPD-
300 280 PROPAGATION DELAY (ns) 260 240 220 200 180 160 140 120 100 tPD+ tPD-
300
150
-50
-25
0
25
50
75
100
125
0
20
40
60
80
100
120
140
CAPACITIVE LOAD (pF)
TEMPERATURE (C)
INPUT OVERDRIVE VOLTAGE (mV)
4
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Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = 0, RL = 10k, CL = 15pF, VOD = 100mV, TA = +25C, unless otherwise noted.)
MAX9030/MAX9031/MAX9032/MAX9034
PROPAGATION DELAY
MAX9030/1/2/4 toc13
OUTPUT SWITCHING CURRENT, RISING
MAX9030/1/2/4 toc14
IN+ - IN5V/div
IN+ - IN200mV/div
OUT 5V/div
OUT 2V/div
SWITCHING CURRENT 200A/div TIME (200ns/div) TIME (2s/div)
OUTPUT SWITCHING CURRENT, FALLING
IN+ - IN5V/div
MAX9030/1/2/4 toc15
SINUSOID 1MHz RESPONSE AT 1.25MHz VOD = 100mV
MAX9030/1/2/4 toc16
IN+ - IN100mV/div
OUT 5V/div
SWITCHING CURRENT 50A/div TIME (1s/div)
OUT 2V/div
TIME (100ns/div)
SINUSOID 1MHz RESPONSE AT 1.25MHz VOD = 10mV
MAX9030/1/2/4 toc17
POWER-UP DELAY
MAX9030/1/2/4 toc18
IN+ - IN10mV/div
VDD 2.5V/div
OUT 2V/div OUT
TIME (100ns/div)
TIME (200ns/div)
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5
Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators MAX9030/MAX9031/MAX9032/MAX9034
Pin Description
PIN NAME MAX9030 1 2 3 4 5 6 -- -- -- -- -- -- -- -- -- -- -- -- MAX9031 1 2 3 4 -- 5 -- -- -- -- -- -- -- -- -- -- -- -- MAX9032 -- 4 -- -- -- 8 1 2 3 5 6 7 -- -- -- -- -- -- MAX9034 -- 11 -- -- -- 4 1 2 3 5 6 7 8 9 10 12 13 14 IN+ VSS INOUT SHDN VDD OUTA INAINA+ INB+ INBOUTB OUTC INCINC+ IND+ INDOUTD Comparator Noninverting Input Negative Supply Voltage. Bypass with a 0.1F capacitor. Comparator Inverting Input Comparator Output Shutdown Positive Supply Voltage. Bypass with a 0.1F capacitor. Comparator A Output Comparator A Inverting Input Comparator A Noninverting Input Comparator B Noninverting Input Comparator B Inverting Input Comparator B Output Comparator C Output Comparator C Inverting Input Comparator C Noninverting Input Comparator D Noninverting Input Comparator D Inverting Input Comparator D Output FUNCTION
Detailed Description
The MAX9030/MAX9031/MAX9032/MAX9034 are single/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 35A. 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.
applied to SHDN places the device in the shutdown mode. A minimum logic high voltage of 0.7V V DD applied to SHDN will enable normal operation. To disable 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 voltage is related to the output voltage. These comparators have 4mV internal hysteresis. Additional hysteresis can be generated with two resistors using positive feedback (Figure 1). Use the following procedure to calculate resistor values:
Shutdown Mode
The MAX9030 comparator comes with a power-saving shutdown mode. When in shutdown, the supply current drops from a typical 35A to 0.05A, and the outputs become high impedance. SHDN has a high input impedance and typically draws 0.1A when connected to VSS or VDD. A maximum logic low voltage of 0.3V VDD
6
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Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators MAX9030/MAX9031/MAX9032/MAX9034
R1 VDD VDD VDD IN+ OUT 10k VIN ININMAX9031 VSS VIN IN+ OUT VDD
R2 VREF
MAX9031
VSS
0.1F
Figure 1. Additional Hysteresis
Figure 2. Time Averaging of the Input Signal for Data Recovery
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 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: 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 1k. 5) Select VHYS. In this example, we will choose 50mV. 6) Solve for R1. VHYS = VDD(R2 / (R1 + R2)) 0.050V = 5(1000/(R1 + 1000)) V where R1 100k, VTH = 2.525V, and VTL = 2.475V. The above-described design procedure assumes railto-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 slowmoving 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: CAR >> 1 / (2R1C1) where CAR is the fundamental carrier frequency of the digital data stream.
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7
Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators MAX9030/MAX9031/MAX9032/MAX9034
Typical Application Circuit
VDD VIN R1 VIN IN+ OUT VREF INRL R2 0.1F
Chip Information
TRANSISTOR COUNT/MAX9030/MAX9031: 123 TRANSISTOR COUNT/MAX9032: 184 TRANSISTOR COUNT/MAX9034: 368
VDD
MAX9031
8
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Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators
Package Information
SC70, 5L.EPS
MAX9030/MAX9031/MAX9032/MAX9034
_______________________________________________________________________________________
SC70, 6L.EPS
9
Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators MAX9030/MAX9031/MAX9032/MAX9034
Package Information (continued)
SOT23, 8L.EPS
10
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Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators MAX9030/MAX9031/MAX9032/MAX9034
Package Information (continued)
TSSOP,NO PADS.EPS
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________11 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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