MAX9021AXK+T ,Micropower, Ultra-Small, Single/Dual/Quad Single-Supply Comparatorsapplications. ♦ No Phase Reversal for Overdriven InputsThe MAX9021/MAX9022/MAX9024 have 4mV of buil ..
MAX9021AXK-T ,Micropower / Ultra-Small / Single/Dual/Quad / Single-Supply Comparatorsapplications from 2.5V to5.5V, but can also operate from dual supplies. These 3µs Propagation Dela ..
MAX9022AKA+T ,Micropower, Ultra-Small, Single/Dual/Quad Single-Supply ComparatorsFeaturesThe MAX9021/MAX9022/MAX9024 single/dual/quad♦ Low-Cost Solution Available in Space-Saving c ..
MAX9024ASD ,Micropower / Ultra-Small / Single/Dual/Quad / Single-Supply ComparatorsApplicationsMAX9022AUA -40°C to +125°C 8 µMAXBattery-Powered Digital Line ReceiversMAX9022ASA -40°C ..
MAX9024AUD ,Micropower / Ultra-Small / Single/Dual/Quad / Single-Supply Comparatorsapplications. No Phase Reversal for Overdriven InputsThe MAX9021/MAX9022/MAX9024 have 4mV of buil ..
MAX9025EBT+T ,UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without ReferenceElectrical Characteristics-MAX9025/MAX9026 (with REF) (continued)(V = +5V, V = 0V, V = V , T = -40° ..
MB88101A ,A/D Converter (With 4-channel Input at 12-bit Resolution)FEATURES• 4-channel analog input• One analog input channel selectable for conversion by external co ..
MB88101A ,A/D Converter (With 4-channel Input at 12-bit Resolution)FUJITSU SEMICONDUCTORDS04-13105-2EDATA SHEETLinear IC ConverterCMOSA/D Converter(With 4-channel I ..
MB88101APF ,A/D Converter (With 4-channel Input at 12-bit Resolution)FEATURES• 4-channel analog input• One analog input channel selectable for conversion by external co ..
MB88141 ,D/A Converter for Digital Tuning (With Built-in OP Amp and I/O Expander)FUJITSU SEMICONDUCTORDS04-13211-3EDATA SHEETGeneral Purpose Linear IC’s General Purpose ConvertersC ..
MB88141A ,D/A Converter for Digital Tuning (Compatible with I 2 C Bus)FUJITSU SEMICONDUCTORDS04-13213-1EDATA SHEETLinear IC ConverterCMOSD/A Converter for Digital Tuning ..
MB88141APF ,D/A Converter for Digital Tuning (Compatible with I2C Bus)FUJITSU SEMICONDUCTORDS04-13213-1EDATA SHEETLinear IC ConverterCMOSD/A Converter for Digital Tuning ..
MAX9021AUK+T-MAX9021AXK+T-MAX9022AKA+T
Micropower, Ultra-Small, Single/Dual/Quad Single-Supply Comparators
General DescriptionThe MAX9021/MAX9022/MAX9024 single/dual/quad
comparators are optimized for low-power consumption
while still providing a fast output response. They are
designed for single-supply applications from 2.5V to
5.5V, but can also operate from dual supplies. These
comparators have a 3µs propagation delay and con-
sume 2.8µA of supply current per comparator over the
-40°C to +125°C operating 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 MAX9021/MAX9022/MAX9024 have 4mV of built-in
hysteresis to provide noise immunity and prevent oscil-
lations 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 switch-
ing current during output transitions, eliminating power-
supply glitches.
The MAX9021 single comparator is available in tiny 5-
pin SC70 and SOT23 packages. The MAX9022 dual
comparator is available in 8-pin SOT23, µMAX®, and
SO packages, and the MAX9024 quad comparator is
available in 14-pin TSSOP and SO packages.
FeaturesLow-Cost Solution Available in Space-Saving
SC70 Packages (Half the Size of SOT23)Low 2.8µA Supply Current3µs Propagation DelayInternal 4mV Comparator HysteresisComparator Output Swings Rail-to-Rail2.5 to 5.5V Single-Supply Voltage RangeNo Phase Reversal for Overdriven InputsSpace-Saving Packages
5-Pin SC70 (MAX9021)
8-Pin SOT23 (MAX9022)
8-Pin µMAX (MAX9022)
14-Pin TSSOP (MAX9024)
MAX9021/MAX9022/MAX9024
Micropower, Ultra-Small, Single/Dual/Quad,
Single-Supply ComparatorsTOP VIEW
VSS
OUTIN-VDDIN+
MAX9021
SC70/SOT23INB-
INB+VSS
VDD
OUTBINA-
INA+
OUTA
S0T23/μMAX/SOMAX9022
OUTD
IND-
IND+
VSSVDD
INA+
INA-
OUTA
MAX9024
INC+
INC-
OUTCOUTB
INB-
INB+
TSSOP/SO
Pin Configurations19-1842; Rev 2; 1/07
Ordering InformationBattery-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.
PA RT TEMP RANGEPIN-
PACKAGE
PKG
CODE
MAX9021AXK-T-40°C to +125°C5 SC70-5X5-1
MAX9021AUK-T-40°C to +125°C5 SOT23-5U5-1
MAX9022AKA-T-40°C to +125°C8 SOT23-8K8-5
MAX9022AUA-40°C to +125°C8 µMAXU8-1
MAX9022ASA-40°C to +125°C8 SOS8-2
MAX9024AUD-40°C to +125°C14 TSSOPU14-1
MAX9024ASD-40°C to +125°C14 SOS14-2
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Applications
MAX9021/MAX9022/MAX9024
Micropower, Ultra-Small, Single/Dual/Quad,
Single-Supply Comparators
ABSOLUTE MAXIMUM RATINGSStresses 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 (VDDto 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
Current into Input Pins......................................................±20mA
Output Short-Circuit Duration..................2s to Either VDDor 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
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 8.3mW/°C above +70.......................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
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOperating Voltage RangeVDDGuaranteed by PSRR test2.55.5Vup p l y C ur r ent P er C om p ar ator IDD2.85µA
Input Offset VoltageVOS(Note 2)±1±8mV
Input Offset Voltage
Temperature CoefficientTCVOS±1µV/°C
Hysteresis(Note 3)4mV
Input Bias CurrentIBIAS380nA
Input Offset CurrentIOS±2±60nA
Common-Mode Voltage RangeVCMGuaranteed by CMRR testVSSVDD - 1.1Vom m on- M od e Rej ecti on Rati oCMRRV S S ≤ V C M ≤ ( V D D - 1.1V ) , V D D = 5.5V 70100d B
Power-Supply Rejection RatioPSRRVDD = 2.5V to 5.5V6080dB
ISOURCE = 10µA2VOH = VDD - VOUT,
(VIN+ - VIN-) ≥ 20mVISOURCE = 4mA160400
ISINK = 10µA2Output-Voltage SwingVOL, VOH
VOL = VOUT - VSS,
(VIN- - VIN+) ≥ 20mVISINK = 4mA180400
Output Short-Circuit CurrentISC50m A
VOD = 10mV8Propagation Delaytpd+, tpd-RL = 10kΩ,
CL = 15pF (Note 4)VOD = 100mV3
Rise and Fall TimetR, tFRL = 10kΩ, CL = 15pF (Note 5)20ns
Power-On TimeRL = 10kΩ, CL = 15pF150ns
Maximum Capacitive LoadCLNo sustained oscillations150pF
Note 1:All devices are production tested at 25°C. All temperature limits are guaranteed by design.
Note 2:Comparator Input Offset is defined as the center of the hysteresis zone.
Note 3:Hysteresis is defined as the difference of the trip points required to change comparator output states.
Note 4:VODis the overdrive voltage beyond the offset and hysteresis-determined trip points.
Note 5:Rise and fall times are measured between 10% and 90% at OUT.
ELECTRICAL CHARACTERISTICS(VDD= 5V, VSS= 0, VCM= 0, TA= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
MAX9021/MAX9022/MAX9024
Micropower, Ultra-Small, Single/Dual/Quad,
Single-Supply Comparators
Typical Operating Characteristics(VDD= 5V, VSS= 0, VCM= 0, RL= 10kΩ, CL= 15pF, VOD= 100mV, TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9021/2/4 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
SUPPLY CURRENT vs. TEMPERATURE
MAX9021/2/4 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (
SUPPLY CURRENT
vs. OUTPUT TRANSITION FREQUENCY
MAX9021/2/4 toc03
OUTPUT TRANSITION FREQUENCY (kHz)
SUPPLY CURRENT (
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9021/2/4 toc04
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (mV)
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
MAX9021/2/4 toc05
SOURCE CURRENT (mA)
- V
OUT
) (mV)
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
MAX9021/2/4 toc06
SINK CURRENT (mA)
OUTPUT LOW VOLTAGE (mV)
OUTPUT SHORT-CIRCUIT CURRENT
vs. TEMPERATURE
MAX9021/2/4 toc07
TEMPERATURE (°C)
OUTPUT SHORT-CIRCUIT CURRENT (mA)
SOURCE CURRENT
SINK CURRENT
PROPAGATION DELAY vs. CAPACITIVE LOAD
(VDD = 2.7V)MAX9021/2/4 toc08
CAPACITIVE LOAD (pF)
PROPAGATION DELAY (
tPD-
tPD+
PROPAGATION DELAY vs. CAPACITIVE LOAD
(VDD = 5V)
MAX9021/2/4 toc09
CAPACITIVE LOAD (pF)
PROPAGATION DELAY (tPD-500100015002000
tPD+
MAX9021/MAX9022/MAX9024
Micropower, Ultra-Small, Single/Dual/Quad,
Single-Supply Comparators
Typical Operating Characteristics (continued)(VDD= 5V, VSS= 0, VCM= 0, RL= 10kΩ, CL= 15pF, VOD= 100mV, TA= +25°C, unless otherwise noted.)
PROPAGATION DELAY
vs. TEMPERATURE
MAX9021/2/4 toc10
TEMPERATURE (°C)
PROPAGATION DELAY (tPD-
tPD+
PROPAGATION DELAY
vs. INPUT OVERDRIVE VOLTAGE
MAX9021/2/4 toc11
INPUT OVERDRIVE VOLTAGE (mV)
PROPAGATION DELAY (
tPD+
tPD-
PROPAGATION DELAY (tPD+)MAX9021/2/4 toc12
1μs/div
IN+
100mV/div
VOUT
2.5V/div
PROPAGATION DELAY (tPD-)MAX9021/2/4 toc13
1μs/div
IN+
100mV/div
VOUT
2.5V/div
OUTPUT SWITCHING CURRENT, RISINGMAX9021/2/4 toc14
20μs/div
IN+ - IN-
200mV/div
VOUT
5V/div
SWITCHING
CURRENT
400μA/div
OUTPUT SWITCHING CURRENT, FALLINGMAX9021/2/4 toc15
20μs/div
IN+ - IN-
200mV/div
VOUT
5V/div
SWITCHING
CURRENT
400μA/div
10kHz RESPONSE
(VOD = 10mV)MAX9021/2/4 toc16
10μs/div
IN+ - IN-
10mV/div
OUT
2.5V/div
10kHz RESPONSE
(VOD = 100mV)MAX9021/2/4 toc17
10μs/div
IN+ - IN-
100mV/div
OUT
2.5V/div
POWER-UP TIMEMAX9021/2/4 toc18
2μs/div
VDD
2.5V/div
VOUT
2.5V/div
MAX9021/MAX9022/MAX9024
Micropower, Ultra-Small, Single/Dual/Quad,
Single-Supply Comparators
Detailed DescriptionThe MAX9021/MAX9022/MAX9024 are single/dual/
quad, low-cost, low-power comparators that consume
only 2.8µA and provide a propagation delay, tPD, typi-
cally 3µs. 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. Their common-mode input voltage range
extends from the negative supply to within 1.1V of the
positive supply. Internal hysteresis ensures clean out-
put switching, even with slow-moving input signals.
Applications Information
Adding HysteresisHysteresis extends the comparator’s noise margin by
increasing the upper threshold and decreasing the
lower threshold. A voltage-divider from the compara-
tor’s output 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:
1) Find the trip points of the comparator using these for-
mulas:
VTH= VREF+ ((VDD- VREF)R2) / (R1 + R2)
VTL= VREF(1 - (R2 / (R1 + R2))
where VTHis the threshold voltage at which the com-
parator switches its output from high to low as VIN
rises above the trip point. VTLis the threshold volt-
age at which the comparator switches its output from
low to high as VINdrops below the trip point.
Pin Description
PINA X9 0 2 1 M A X9 0 2 2 M A X9 0 2 4
NAMEFUNCTION—IN+Comparator Noninverting Input11VSSNegative Supply Voltage—IN-Comparator Inverting Input—OUTComparator Output4VDDPositive Supply Voltage. Bypass with a 0.1µF capacitor to GND.1OUTAComparator A Output2INA-Comparator A Inverting Input3INA+Comparator A Noninverting Input5INB+Comparator B Noninverting Input6INB-Comparator B Inverting Input7OUTBComparator B Output8OUTCComparator C Output9INC-Comparator C Inverting Input10INC+Comparator C Noninverting Input12IND+Comparator D Noninverting Input13IND-Comparator D Inverting Input14OUTDComparator D Output
