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MAX4040EUK+N/AN/a2500avaiSingle/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps
MAX4040ESA+ |MAX4040ESAMAXIMN/a5avaiSingle/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps
MAX4040EUKMAXIMN/a574avaiSingle/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps
MAX4041ESA+ |MAX4041ESAMAXIMN/a25avaiSingle/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps
MAX4042ESA+ |MAX4042ESAMAXIMN/a520avaiSingle/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps
MAX4042EUA+MAXIMN/a2500avaiSingle/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps


MAX4040EUK+ ,Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op AmpsELECTRICAL CHARACTERISTICS—T = +25°C (continued)A(V = +5.0V, V = 0V, V = 0V, V = V / 2, SHDN = V , ..
MAX4040EUK-T ,Single/Dual/Quad / Low-Cost / SOT23 / Micropower Rail-to-Rail I/O Op Ampsapplications.Ordering InformationThe MAX4040 is offered in a space-saving 5-pin SOT23PIN- SOT packa ..
MAX4040EUK-T ,Single/Dual/Quad / Low-Cost / SOT23 / Micropower Rail-to-Rail I/O Op Ampsapplications.Ordering InformationThe MAX4040 is offered in a space-saving 5-pin SOT23PIN- SOT packa ..
MAX4041ESA ,Single/Dual/Quad / Low-Cost / SOT23 / Micropower Rail-to-Rail I/O Op AmpsFeaturesThe MAX4040–MAX4044 family of micropower op amps' Single-Supply Operation Down to +2.4Voper ..
MAX4041ESA+ ,Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op AmpsMAX4040–MAX404419-1377; Rev 1; 9/05Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O O ..
MAX4041EUA ,Single/Dual/Quad / Low-Cost / SOT23 / Micropower Rail-to-Rail I/O Op AmpsMAX4040–MAX404419-1377; Rev 0; 5/98Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O O ..
MAX7545AKCWP ,CMOS 12-BIT BUFFERED MULTIPLYING DACsApplications Motion Control Systems Automatic Test Equipment pp Controlled Systems Progra ..
MAX7545ALP ,CMOS 12-BIT BUFFERED MULTIPLYING DACsfeatures a 100ns max write pulse width (150ns for MAX7645) which allows inter- facing to a wide r ..
MAX754CPE ,CCFL Backlight and LCD Contrast ControllersMAX753/MAX75419-0197; Rev 1; 1/95CCFL Backlight andLCD Contrast Controllers_______________
MAX754CSE ,CCFL Backlight and LCD Contrast ControllersBlock Diagram located at end of data sheet.____ Maxim Integrated Products 1 for or literature.CCF ..
MAX754ESE ,CCFL Backlight and LCD Contrast ControllersGeneral Description ________
MAX755CPA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM RegulatorsApplications Board-Level DC-DC Conversion Battery-Powered Equipment Computer Peripherals Ty ..


MAX4040ESA+-MAX4040EUK-MAX4040EUK+-MAX4041ESA+-MAX4042ESA+-MAX4042EUA+
Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps
________________General Description
The MAX4040–MAX4044 family of micropower op amps
operates from a single +2.4V to +5.5V supply or dual
±1.2V to ±2.75V supplies and have rail-to-rail input and
output capabilities. These amplifiers provide a 90kHz
gain-bandwidth product while using only 10µA of supply
current per amplifier. The MAX4041/MAX4043 have a
low-power shutdown mode that reduces supply current
to less than 1µA and forces the output into a high-imped-
ance state. The combination of low-voltage operation,
rail-to-rail inputs and outputs, and ultra-low power con-
sumption makes these devices ideal for any
portable/battery-powered system.
These amplifiers have outputs that typically swing to
within 10mV of the rails with a 100kΩload. Rail-to-rail
input and output characteristics allow the full power-
supply voltage to be used for signal range. The combi-
nation of low input offset voltage, low input bias current,
and high open-loop gain makes them suitable for low-
power/low-voltage precision applications.
The MAX4040 is offered in a space-saving 5-pin SOT23
package. All specifications are guaranteed over the
-40°C to +85°C extended temperature range.
________________________Applications

Battery-Powered Strain Gauges
SystemsSensor Amplifiers
Portable/Battery-PoweredCellular Phones
Electronic EquipmentNotebook Computers
Digital ScalesPDAs
____________________________Features
Single-Supply Operation Down to +2.4VUltra-Low Power Consumption:
10µA Supply Current per Amplifier
1µA Shutdown Mode (MAX4041/MAX4043)
Rail-to-Rail Input Common-Mode RangeOutputs Swing Rail-to-RailNo Phase Reversal for Overdriven Inputs200µV Input Offset VoltageUnity-Gain Stable for Capacitive Loads up to 200pF90kHz Gain-Bandwidth ProductAvailable in Space-Saving 5-Pin SOT23 and
8-Pin µMAX®Packages
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower Rail-to-Rail I/O Op Amps

VEE
IN-IN+VCCOUT
MAX4040
SOT23-5

TOP VIEW
19-1377; Rev 1; 9/05
PART
MAX4040EUK-T

MAX4040EUA
MAX4040ESA-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGEPIN-
PACKAGE

5 SOT23-5
8 µMAX
8 SO
Ordering Information

Pin Configurations continued at end of data sheet.
NO. OF
AMPSPIN-PACKAGE

MAX404015-pin SOT23,
8-pin µMAX/SO
PART

MAX404118-pin µMAX/SO
SHUTDOWN

Yes
MAX4044414-pin SO—
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX4042EUA

MAX4042ESA-40°C to +85°C
-40°C to +85°C8 µMAX
8 SO
MAX4044ESD
-40°C to +85°C14 SO
SOT
TOP MARK

ACGF
Pin ConfigurationsSelector Guide

MAX404228-pin µMAX/SO—
MAX4043210-pin µMAX/
14-pin SOYes
MAX4041ESA

MAX4041EUA-40°C to +85°C
-40°C to +85°C8 SO
8 µMAX
MAX4043EUB

MAX4043ESD-40°C to +85°C
-40°C to +85°C10 µMAX
14 SO
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—TA= +25°C

(VCC= +5.0V, VEE= 0V, VCM= 0V, VOUT= VCC/ 2, SHDN= VCC, RL= 100kΩtied to VCC/ 2, unless otherwise noted.)
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 (VCCto VEE)..................................................+6V
All Other Pins...................................(VCC+ 0.3V) to (VEE- 0.3V)
Output Short-Circuit Duration to VCCor VEE..............Continuous
Continuous Power Dissipation (TA= +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW
8-Pin µMAX (derate 4.1mW/°C above +70°C)..............330mW
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
10-Pin µMAX (derate 5.6mW/°C above +70°C)...........444mW
14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10s).................................+300°C20VCC= 5.0V
(Note 1)Input Offset CurrentIOS±0.5±3.0nA
(Note 1)
VIN+- VIN-< 1.0VDifferential Input
ResistanceRIN(DIFF)45MΩ
VIN+- VIN-> 2.5V
SHDN= VEE, MAX4041
and MAX4043 only
Large-Signal
Voltage Gain
Shutdown Supply
Current per AmplifierICC(SHDN)1.0
Supply-Voltage RangeVCC2.45.5VInferred from PSRR test
Output Voltage
Swing High
4.4kΩ
VOH
Inferred from the CMRR test
AVOLdB
PARAMETERSYMBOLMINTYPMAXUNITS

Supply Current
per AmplifierICC10µA
VCC= 2.4VSpecified as VCC- VOH
Power-Supply
Rejection RatioPSRRdB
(VEE+ 0.2V) ≤VOUT≤(VCC- 0.2V)9085
Output Voltage
Swing Low
Input Common-Mode
Voltage Range= 100kΩ= 25kΩ= 100kΩ= 25kΩ
VCMVEEVCCV
2.4V ≤VCC≤5.5V7585
VCC= 2.4V
VOLmV10Specified as VEE- VOL
Input Bias CurrentIB±2±10nA60= 100kΩ= 25kΩ
Output Short-Circuit
CurrentIOUT(SC)mA0.7Sourcing
Channel-to-Channel
Isolation
Sinking
CONDITIONS
Specified at DC, MAX4042/MAX4043/MAX4044 only
VCC= 5.0V
±0.20±2.0
VOSInput Offset VoltagemV±0.25±2.5
VEE≤VCM≤VCC7094dBCMRRCommon-Mode
Rejection Ratio
MAX404_EU_
All other packages94
VEE≤VCM≤VCC
MAX4044ESD
MAX404_EU_
All other packagesmV±0.20±1.50
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps
ELECTRICAL CHARACTERISTICS—TA= +25°C (continued)

(VCC= +5.0V, VEE= 0V, VCM= 0V, VOUT= VCC/ 2, SHDN= VCC, RL= 100kΩtied to VCC/ 2, unless otherwise noted.)
MAX4040–MAX4044
PARAMETERSYMBOLMINTYPMAXUNITSCONDITIONS

Supply Current
per AmplifierICC28
Supply-Voltage RangeVCC2.45.5VInferred from PSRR test
(Note 1)Input Offset CurrentIOS±8nA
Input Voltage Noise Densityen70nV/√Hz
Input Current Noise Densityin0.05pA/√Hz
Capacitive-Load Stability200pF
Power-Up TimetON200µs
Input CapacitanceCIN3pF
f = 1kHz
f = 1kHz
AVCL= +1V/V, no sustained oscillations
Slew RateSR40V/ms
Total Harmonic DistortionTHD0.05%
Settling Time to 0.01%tS50µs
fIN= 1kHz, VOUT= 2Vp-p, AV= +1V/V= +1V/V, VOUT= 2VSTEP
PARAMETERSYMBOLMINTYPMAXUNITSCONDITIONS

Gain MarginGm18dB
Output Leakage Current in
ShutdownIOUT(SHDN)20100nASHDN= VEE= 0, MAX4041/MAX4043 only
(Note 2)
6.0SHDN= VEE, MAX4041 and MAX4043 onlyShutdown Supply
Current per AmplifierICC(SHDN)µA
Shutdown TimetSHDN50µsMAX4041 and MAX4043 only
Enable Time from ShutdowntEN150µsMAX4041 and MAX4043 only
ELECTRICAL CHARACTERISTICS—TA= TMINto TMAX

(VCC= +5.0V, VEE= 0V, VCM= 0V, VOUT= VCC/ 2, SHDN= VCC, RL= 100kΩtied to VCC/ 2, unless otherwise noted.) (Note 3)
Input Offset Voltage DriftTCVOS2µV/°C
(Note 1)Input Bias CurrentIB±20nA
Phase MarginΦm68degrees
±4.5
SHDNLogic LowVIL0.3 x VCCVMAX4041/MAX4043 only
SHDNLogic HighVIH0.7 x VCCVMAX4041/MAX4043 only
SHDNInput Bias CurrentIIH, IIL40120nAMAX4041/MAX4043 only
Gain Bandwidth ProductGBW90kHz
±5.0VOSInput Offset VoltagemV
±3.5
VEE≤VCM≤VCC
MAX4044ESA
All other packages
MAX404_EU_
SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
MAX4040/44-01
TEMPERATURE (°C)
SUPPLY CURRENT (
VCC = +5.5V
VCC = +2.4V
MAX4041/MAX4043
SHUTDOWN SUPPLY CURRENT
PER AMPLIFIER vs. TEMPERATURE
MAX4040/44-01.5
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (
VCC = +5.5V
SHDN = 0
VCC = +2.4V
__________________________________________Typical Operating Characteristics

(VCC= +5.0V, VEE= 0, VCM= VCC / 2, SHDN= VCC, RL= 100kΩto VCC / 2, TA= +25°C, unless otherwise noted.)
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps

Large-Signal Voltage
Gain
Output Voltage Swing
HighVOH
Inferred from the CMRR test
AVOLdB
PARAMETERSYMBOLMINTYPMAXUNITS

Specified as VCC- VOH, RL= 25kΩ
Common-Mode
Rejection RatioCMRRdB
(VEE+ 0.2V) ≤VOUT≤(VCC- 0.2V), RL= 25kΩ
Output Voltage Swing
Low
Input Common-Mode
Voltage RangeVCMVEEVCCV
VOLmVSpecified as VEE- VOL, RL= 25kΩ75
CONDITIONS
ELECTRICAL CHARACTERISTICS—TA= TMINto TMAX(continued)

(VCC= +5.0V, VEE= 0V, VCM= 0V, VOUT= VCC/ 2, SHDN= VCC, RL= 100kΩtied to VCC/ 2, unless otherwise noted.) (Note 3)
Note 1:
Input bias current and input offset current are tested with VCC= +5.0V and +0.5V ≤VCM≤+4.5V.
Note 2:
Tested for VEE≤VOUT≤VCC. Does not include current through external feedback network.
Note 3:
All devices are 100% tested at TA= +25°C. All temperature limits are guaranteed by design.
Power-Supply
Rejection RatioPSRRdB2.4V ≤VCC≤5.5V70
MAX404_EU_VEE≤VCM≤VCCAll other packages65
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps

OUTPUT SWING HIGH
vs. TEMPERATURE
MAX4040/44-07
TEMPERATURE (°C)
VOLTAGE FROM V
CC
(mV)
VCC = +2.4V, RL = 10kΩ
RL TO VEE
VCC = +5.5V, RL = 20kΩ
VCC = +5.5V, RL = 100kΩ
VCC = +2.4V, RL = 100kΩ
OUTPUT SWING LOW
vs. TEMPERATURE
MAX4040/44-08
TEMPERATURE (°C)
VOLTAGE FROM V
EE
(mV)
VCC = +2.4V, RL = 10kΩ
VCC = +5.5V, RL = 20kΩ
VCC = +5.5V, RL = 100kΩ
VCC = +2.4V, RL = 100kΩ
RL TO VCC
COMMON-MODE REJECTION
vs. TEMPERATURE
MAX4040/44-09
TEMPERATURE (°C)
COMMON-MODE REJECTION (dB)
VCC = +2.4V
VCC = +5.5V
INPUT BIAS CURRENT
vs. TEMPERATURE
MAX4040/44-04
TEMPERATURE (°C)
INPUT BIAS CURRENT (nA)
VCM = 0
VCC = +2.4V
VCC = +5.5V
INPUT BIAS CURRENT vs.
COMMON-MODE VOLTAGE (VCC = 2.4V)
MAX4040/44-5
VCM (V)
IBIAS
(nA)0
VCC = +2.4V
INPUT BIAS CURRENT vs.
COMMON-MODE VOLTAGE (VCC = 5.5V)
MAX4040/44-06
VCM (V)
IBIAS
(nA)0
VCC = +5.5V
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4040/44-03
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (
Typical Operating Characteristics (continued)
(VCC= +5.0V, VEE= 0, VCM= VCC / 2, SHDN= VCC, RL= 100kΩto VCC / 2, TA= +25°C, unless otherwise noted.)
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps

OPEN-LOOP GAIN vs. OUTPUT SWING LOW
(VCC = +2.4V, RL TIED TO VCC)
MAX4040/44-10
∆VOUT (mV)
GAIN (dB)
RL = 100kΩ
RL = 10kΩ
OPEN-LOOP GAIN vs. OUTPUT SWING HIGH
(VCC = +5.5V, RL TIED TO VEE)
MAX4040/44-13
∆VOUT (mV)
GAIN (dB)70
RL = 20kΩ
RL = 100kΩ
OPEN-LOOP GAIN vs. OUTPUT SWING HIGH
(VCC = +2.4V, RL TIED TO VEE)
MAX4040/44-11
∆VOUT (mV)
GAIN (dB)
RL = 100kΩ
RL = 10kΩ
OPEN-LOOP GAIN vs. OUTPUT SWING LOW
(VCC = +5.5V, RL TIED TO VCC)
MAX4040/44-12
∆VOUT (mV)
GAIN (dB)70
RL = 100kΩ
RL = 20kΩ
OPEN-LOOP GAIN
vs. TEMPERATURE
MAX4040/44-14
TEMPERATURE (°C)
GAIN (dB)
VCC = +5.5V, RL = 20kΩ TO VCC
VCC = +5.5V, RL = 20kΩ TO VEE
VCC = +2.4V, RL = 10kΩ TO VEE
VCC = +2.4V, RL = 10kΩ TO VCC
OPEN-LOOP GAIN
vs. TEMPERATURE
MAX4040/44-15
TEMPERATURE (°C)
GAIN (dB)
VCC = +5.5V, RL TO VCC
VCC = +5.5V, RL TO VEE
VCC = +2.4V, RL TO VCC
VCC = +2.4V, RL TO VEE
____________________________________Typical Operating Characteristics (continued)

(VCC= +5.0V, VEE= 0, VCM= VCC / 2, SHDN= VCC, RL= 100kΩto VCC / 2, TA= +25°C, unless otherwise noted.)
-401001k10k100k
GAIN AND PHASE vs. FREQUENCY
(NO LOAD)

MAX4040/44-16
FREQUENCY (Hz)
GAIN (dB)0
PHASE (DEGREES)-36
144AV = +1000V/V
-401001k10k100k
GAIN AND PHASE vs. FREQUENCY
(CL = 100pF)

MAX4040/44-17
FREQUENCY (Hz)
GAIN (dB)0
PHASE (DEGREES)-36
144AV = +1000V/V
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps
____________________________________Typical Operating Characteristics (continued)

(VCC= +5.0V, VEE= 0, VCM= VCC / 2, SHDN= VCC, RL= 100kΩto VCC / 2, TA= +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX4040/44-19
FREQUENCY (Hz)
THD + NOISE (%)
RL = 10kΩ
RL = 100kΩ
LOAD RESISTOR vs.
CAPACITIVE LOAD
MAX4040/44-20
CLOAD (pF)
LOAD
(k
10%
OVERSHOOT
REGION OF
MARGINAL STABILITY
REGION OF
STABLE OPERATION
10μs/div
SMALL-SIGNAL TRANSIENT RESPONSE
(NONINVERTING)

MAX4040/44-21
50mV/div
100mV
100mV
OUT
10μs/div
SMALL-SIGNAL TRANSIENT RESPONSE
(INVERTING)

MAX4040/44-22
50mV/div
100mV
100mV
OUT
100μs/div
LARGE-SIGNAL TRANSIENT RESPONSE
(NONINVERTING)

MAX4040/42/44-23
2V/div
4.5V
0.5V
4.5V
0.5V
OUT
100μs/div
LARGE-SIGNAL TRANSIENT RESPONSE
(INVERTING)

MAX4040/42/44-24
2V/div
+2V
-2V
-2V
+2V
OUT
-1101k10k100
MAX4042/MAX4043/MAX4044
CROSSTALK vs. FREQUENCY

MAX4040/44-18
FREQUENCY (Hz)
GAIN (dB)-90
RL = 10kΩ
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps
_______________Detailed Description
Rail-to-Rail Input Stage

The MAX4040–MAX4044 have rail-to-rail inputs and
rail-to-rail output stages that are specifically designed
for low-voltage, single-supply operation. The input
stage consists of separate NPN and PNP differential
stages, which operate together to provide a common-
mode range extending to both supply rails. The
crossover region of these two pairs occurs halfway
between VCCand VEE. The input offset voltage is typi-
cally 200µV. Low operating supply voltage, low supply
current, rail-to-rail common-mode input range, and rail-
to-rail outputs make this family of operational amplifiers
an excellent choice for precision or general-purpose,
low-voltage battery-powered systems.
Since the input stage consists of NPN and PNP pairs,
the input bias current changes polarity as the common-
mode voltage passes through the crossover region.
Match the effective impedance seen by each input to
reduce the offset error caused by input bias currents
flowing through external source impedances (Figures
1a and 1b). The combination of high source impedance
plus input capacitance (amplifier input capacitance
plus stray capacitance) creates a parasitic pole that
produces an underdamped signal response. Reducing
input capacitance or placing a small capacitor across
the feedback resistor improves response in this case.
______________________________________________________________Pin Description
————44411Negative Supply. Tie to ground for
single-supply operation.VEE—
Amplifier Output. High impedance
when in shutdown mode.OUT——————Inverting InputIN-
Noninverting InputIN+108144——5, 7,
8, 10—No Connection. Not internally con-
nected.N.C.—
Positive SupplyVCC——1, 91, 71, 131, 7Outputs for Amplifiers A and B. High
impedance when in shutdown mode.
OUTA,
OUTB
Shutdown Input. Drive high, or tie to
VCCfor normal operation. Drive to VEE
to place device in shutdown mode.
SHDN2, 82, 62, 122, 63, 73, 53, 113, 5Noninverting Inputs to Amplifiers A
and B
INA+,
INB+5, 6
Inverting Inputs to Amplifiers A and BINA-,
INB-6, 9————8, 14Outputs for Amplifiers C and DOUTC,
OUTD
Shutdown Inputs for Amplifiers A
and B. Drive high, or tie to VCCfor
normal operation. Drive to VEEto
place device in shutdown mode.
SHDNA,
SHDNB———9, 13———10, 12Noninverting Inputs to Amplifiers C
and D
INC+,
IND+
Inverting Inputs to Amplifiers C and DINC-,
IND-
1, 5
1, 5, 8
MAX4043MAX4044
PIN
µMAXMAX4042SOMAX4041FUNCTIONNAME
SOT23-5
MAX4040
SO/µMAX
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