MAX4490AXK+T ,Low-Cost, High-Slew-Rate, Rail-to-Rail I/O Op Amps in SC70FeaturesThe MAX4490/MAX4491/MAX4492 single/dual/quad,♦ 2.7V to 5.5V Single-Supply Operation®low-cos ..
MAX4490AXK-T ,Low-Cost / High-Slew-Rate / Rail-to-Rail I/O Op Amps in SC70ApplicationsMAX4491AKA-T -40°C to +125°C 8 SOT23-8 AADBSensor AmplifiersMAX4492AUD -40°C to +125°C ..
MAX4491AKA ,Low-Cost, High-Slew-Rate, Rail-to-Rail I/O Op Amps in SC70ApplicationsMAX4491AUA -40°C to +125°C 8 µMAX —Sensor AmplifiersMAX4492AUD -40°C to +125°C 14 TSSOP ..
MAX4491AKA+T ,Low-Cost, High-Slew-Rate, Rail-to-Rail I/O Op Amps in SC70ApplicationsPIN- TOPPART TEMP RANGEBattery-Powered InstrumentsPACKAGE MARKPortable EquipmentMAX4490 ..
MAX4491AKA+T ,Low-Cost, High-Slew-Rate, Rail-to-Rail I/O Op Amps in SC70MAX4490/MAX4491/MAX449219-1525; Rev 2; 4/01Low-Cost, High-Slew-Rate, Rail-to-Rail I/O Op Amps in SC ..
MAX4491AKA-T ,Low-Cost / High-Slew-Rate / Rail-to-Rail I/O Op Amps in SC70FeaturesThe MAX4490/MAX4491/MAX4492 single/dual/quad,' +2.7V to +5.5V Single-Supply Operation®low-c ..
MAX8516EUB ,1.425V to 3.6V Input, 1A, 0.2V Dropout LDO Regulatorsfeatures a 150ms power-on reset output.Typical Operating Circuit®The parts are packaged in a 10-pin ..
MAX8516EUB+ ,1.425V to 3.6V Input, 1A, 0.2V Dropout LDO RegulatorsFeaturesThe MAX8516/MAX8517/MAX8518 low-dropout linear ● 1.425V to 3.6V Input Voltage Rangeregulato ..
MAX8516EUB+ ,1.425V to 3.6V Input, 1A, 0.2V Dropout LDO RegulatorsApplicationsMAX8516MAX8517● Servers ● Post RegulatorsMAX8518● Storage ● NotebooksPOWER-ON RESET4.7µ ..
MAX8516EUB+ ,1.425V to 3.6V Input, 1A, 0.2V Dropout LDO RegulatorsApplicationsMAX8516MAX8517● Servers ● Post RegulatorsMAX8518● Storage ● NotebooksPOWER-ON RESET4.7µ ..
MAX8516EUB+T ,1.425V to 3.6V Input, 1A, 0.2V Dropout LDO RegulatorsElectrical Characteristics(Circuit of Figure 1. V = +1.8V, V = +1.5V, EN = IN, I = 1mA, T = -40°C t ..
MAX8517EUB+ ,1.425V to 3.6V Input, 1A, 0.2V Dropout LDO Regulatorsfeatures a power-OK (POK) output that /V Denotes an automotive qualified part. transitions high whe ..
MAX4490AUK-MAX4490AUK+T-MAX4490AXK-MAX4490AXK+T-MAX4491AKA-MAX4491AKA+T-MAX4491AUA-MAX4492AUD+-MAX4492AUD+T
Low-Cost, High-Slew-Rate, Rail-to-Rail I/O Op Amps in SC70
VSS
OUTIN-VDDIN+
SOT23-5/SC70-5TOP VIEW
- +
MAX4490
General DescriptionThe MAX4490/MAX4491/MAX4492 single/dual/quad,
low-cost CMOS op amps feature Rail-to-Rail®input and
output capability from either a single 2.7V to 5.5V sup-
ply or dual ±1.35V to ±2.75V supplies. These amplifiers
exhibit a high slew rate of 10V/µs and a gain-bandwidth
product of 10MHz. They can drive 2kΩresistive loads
to within 55mV of either supply rail and remain unity-
gain stable with capacitive loads up to 300pF.
The MAX4490 is offered in the ultra-small, 5-pin SC70
package, which is 50% smaller than the standard 5-pin
SOT23 package. Specifications for all parts are guaran-
teed over the automotive (-40°C to +125°C) tempera-
ture range.
ApplicationsBattery-Powered Instruments
Portable Equipment
Audio Signal Conditioning
Low-Power/Low-Voltage Applications
Sensor Amplifiers
RF Power Amplifier Control
High-Side/Low-Side Current Sensors
Features2.7V to 5.5V Single-Supply Operation10V/µs Slew RateRail-to-Rail Input Common-Mode Voltage RangeRail-to-Rail Output Voltage Swing10MHz Gain-Bandwidth ProductUnity-Gain Stable with Capacitive Loads
Up to 300pF50pA Input Bias CurrentUltra-Small, 5-Pin SC70 Package (MAX4490)
MAX4490/MAX4491/MAX4492
Low-Cost, High-Slew-Rate,
Rail-to-Rail I/O Op Amps in SC7019-1525; Rev 2; 4/01
PART
MAX4490AXK-TMAX4490AUK-T
MAX4491AKA-T-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
TEMP RANGEPIN-
PACKAGE5 SC70-5
5 SOT23-5
8 SOT23-5
Capacitive-Load Stability
Ordering InformationRail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4492AUD-40°C to +125°C14 TSSOP
MAX4492ASD-40°C to +125°C14 SO
TOP
MARKAAB
ADKQ
AADB
100100k10k1k
RESISTIVE LOAD (Ω)
CAPACITIVE LOAD (pF)
UNSTABLE
STABLE
Pin Configurations/
Functional DiagramsPin Configurations continued at end of data sheet.
MAX4491AUA-40°C to +125°C8 µMAX—
MAX4490/MAX4491/MAX4492
Low-Cost, High-Slew-Rate,
Rail-to-Rail I/O Op Amps in SC70
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VDD= 5V, VSS= 0, VCM= 0, VOUT= VDD/2, RL= 100kΩconnected to VDD/2, TA= TMINto TMAX, unless otherwise noted. Typical
values are at TA= +25°C.) (Note 1)
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 (VDDto VSS)....................................................6V
All Other Pins...................................(VSS- 0.3V) to (VDD+ 0.3V)
Output Short-Circuit Duration.................................................10s
Continuous Power Dissipation (TA= +70°C)
5-Pin SC70 (derate 2.5mW/°C above +70°C)............200mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C)..........571mW
8-Pin SOT23 (derate 5.26mW/°C above +70°C)........421 mW
8-Pin µMAX (derate 4.1mW/°C above +70°C)...........330mW
14-Pin TSSOP (derate 8.3mW/°C above +70°C).......667mW
14-Pin SO (derate 8.3mW/°C above +70°C)..............667mW
Operating Temperature Range........................-40°C to +125°C
Junction Temperature.....................................................+150°C
Storage Temperature Range............................-65°C to +150°C
Lead Temperature (soldering, 10s)................................+300°C
AV(CL)= 1, no sustained oscillations= 10kHz= +25°C= 10kHz
Measured from 10% to 90% of 4VP-Pstep
(Note 2)= 10pF= 10pF= 100kΩ
2.7V ≤VDD≤5.5V= 10pF
VSS≤VCM≤VDD
Inferred from CMRR test= TMINto TMAX
(Note 3)
(Note 3)
Sourcing or sinking= 2kΩ
CONDITIONS300Capacitive-Load Drive
fA√Hz1inCurrent-Noise Density
nV/√Hz12enVoltage-Noise Density
V/µs10SRSlew Rate10Gain Margin
degrees60Phase Margin5CINInput Capacitance
MHz10GBWPGain-Bandwidth Product±50IOUT(SC)Output Short-Circuit Current85±1.5±10VOSInput Offset Voltage0.82IS2.75.5VDDSupply Voltage Range
Supply Current (per amplifier)110AVLarge-Signal Voltage Gain65100PSRRPower-Supply Rejection Ratio5475CMRRCommon-Mode Rejection RatioVSSVDDVCMInput Common-Mode Range±0.05±2.5IBInput Bias Current±0.05±2.5IOSInput Offset Current1000RINInput Resistance
UNITSMINTYPMAXSYMBOLPARAMETER
Note 1:All units production tested at TA= +25°C. Limits over temperature guaranteed by design.
Note 2:Guaranteed by the Power-Supply Rejection Ratio (PSRR) test.
Note 3:Input Offset Voltage, Input Bias Current, and Input Offset Current are all tested and guaranteed at both ends of the common-
mode range.
(VSS + 0.25V) ≤VOUT(VDD - 0.25V)= 100kΩ= 2kΩ55200mV1.5VOHOutput-Voltage Swing HighSpecified as
VDD- VOH= 100kΩ= 2kΩ35150mV1.5VOLOutput-Voltage Swing LowSpecified as
VOL- VSS
(Note 3)
MAX4490/MAX4491/MAX4492
Low-Cost, High-Slew-Rate,
Rail-to-Rail I/O Op Amps in SC70SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
MAX4490 toc 01
TEMPERATURE (°C)
SUPPLY CURRENT (
VDD = 5V
VDD = 2.7V
SUPPLY CURRENT PER AMPLIFIER
vs. SUPPLY VOLTAGE
MAX4490
toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4490 toc03
TEMPERATURE (°C)
OFFSET VOLTAGE (mV)
OUTPUT SWING HIGH
vs. TEMPERATURE
MAX4490 toc04
TEMPERATURE (°C)
- V
OUT
(mV)
VDD = 5V
RL = 2kΩ
VDD = 2.7V
RL = 2kΩ
VDD = 5V OR 2.7V
RL = 100kΩ
OUTPUT SWING LOW
vs. TEMPERATURE
MAX4490 toc05
TEMPERATURE (°C)
OUT
- V
(mV)
VDD = 5V
RL = 2kΩ
VDD = 2.7V
RL = 2kΩ
VDD = 5V OR 2.7V
RL = 100kΩ
1001k10k100k1M10M
OP AMP GAIN AND PHASE
vs. FREQUENCY FREQUENCY (Hz)
GAIN (dB)
PHASE (DEGREES)
MAX4490 toc06
GAIN
PHASE
AV = 1000
CL = 10pF
1001k10k100k1M10M
GAIN AND PHASE
vs. FREQUENCY (WITH CLOAD)MAX4490 toc07
FREQUENCY (Hz)
GAIN (dB)
AV = 1000
CLOAD = 200pF
PHASE (DEGREES)
GAIN
PHASE
LARGE-SIGNAL GAIN
vs. TEMPERATURE
MAX4490 toc08
TEMPERATURE (°C)
LARGE-SIGNAL GAIN (dB)
VDD = 5V
-201k10k100100k1M10M
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCYMAX4490 toc09
FREQUENCY (Hz)
PSSR (dB)
AV = 1
Typical Operating Characteristics(VDD= 5V, VSS= 0, VCM= VDD/2, RL= 100kΩto VDD/2, TA= +25°C, unless otherwise noted.)
MAX4490/MAX4491/MAX4492
Low-Cost, High-Slew-Rate,
Rail-to-Rail I/O Op Amps in SC70
Typical Operating Characteristics (continued)(VDD= 5V, VSS= 0, VCM= VDD/2, RL= 100kΩto VDD/2, TA= +25°C, unless otherwise noted.)
10010k100100k1M10M
OUTPUT IMPEDANCE vs. FREQUENCYMAX4490 toc10
FREQUENCY (Hz)
OUTPUT IMPEDANCE (
AV = 1
0.0401001k10k100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCYMAX4490 toc11
FREQUENCY (Hz)
THD + NOISE (%)0.015
AV = 1V/V
2Vp-p SIGNAL
500kHz LOWPASS FILTER
RL = 2kΩ
RL = 10kΩ
LARGE-SIGNAL TRANSIENT RESPONSE
(NONINVERTING)AV = 1
OUT
40μs/div
V/div
V/div
MAX4490toc12
LARGE-SIGNAL TRANSIENT RESPONSE
(INVERTING)AV = -1
OUT
2V/div
2V/div
40μs/div
MAX4490toc13
SMALL-SIGNAL TRANSIENT RESPONSE
(NONINVERTING)AV = 1
40μs/div
OUT
50mV/div
50mV/div
MAX4490toc14
SMALL-SIGNAL TRANSIENT RESPONSE
(INVERTING)AV = -1
OUT
40μs/div
MAX4490toc15
50mV/div
50mV/div
POWER-UP TRANSIENT RESPONSEAV = 1, VIN CONNECTED TO VDD/2, RL = 2kΩ
VDD
OUT
2V/div
1V/div
MAX4490toc16
4μs/div0
SLEW RATE vs. SUPPLY VOLTAGE
MAX4490 toc17
SUPPLY VOLTAGE (V)
SLEW RATE (V/
AV = 1
10% TO 90% STEP
MAX4491/MAX4492
CROSSTALK vs. FREQUENCY
MAX4492toc18
FREQUENCY (MHz)
CROSSTALK (dB)
MAX4490/MAX4491/MAX4492
Low-Cost, High-Slew-Rate,
Rail-to-Rail I/O Op Amps in SC70
NAMEFUNCTION
MAX4490IN+Noninverting Input
PINVSSNegative Supply Input. Connect to ground for single-supply operation.IN-Inverting InputINA-Inverting Input to Amplifier AINA+Noninverting Input to Amplifier AVDDPositive Supply InputOUTAmplifier OutputINC+, IND+Noninverting Inputs to Amplifiers C and DOUTBAmplifier B OutputINB-Inverting Input to Amplifier BINB+Noninverting Input to Amplifier BOUTAAmplifier A Output
Pin Description
MAX449210, 12
MAX4491—9, 13INC-, IND-Inverting Inputs to Amplifiers C and D—8, 14OUTC, OUTDAmplifiers C and D Outputs
Detailed Description
Rail-to-Rail Input StageThe MAX4490/MAX4491/MAX4492 CMOS operational
amplifiers have parallel-connected N- and P-channel
differential input stages that combine to accept a com-
mon-mode range extending to both supply rails. The N-
channel stage is active for common-mode input
voltages typically greater than (VSS+ 1.2V), and the P-
channel stage is active for common-mode input volt-
ages typically less than (VDD- 1.2V).
Rail-to-Rail Output StageThe MAX4490/MAX4491/MAX4492 CMOS operational
amplifiers feature class-AB push-pull output stages that
can drive a 100kΩload to within 1.5mV of either supply
rail. Short-circuit output current is typically ±50mA.
Figures 1a and 1b show the typical temperature depen-
dence of output source and sink currents, respectively,
for three fixed values of (VDD- VOH) and (VOL- VSS).
For example, at VDD= 5.0V, the load currents that main-
tain (VDD- VOH) = 100mV and (VOL- VSS) = 100mV at= +25°C are 2.2mA and 3.3mA, respectively, when
the load is connected to VDD/2. Consistent resistive-
drive capability is (2.5 - 0.1) / 2.2 = 1.1kΩ. For the same
application, resistive-drive capability is 2.2kΩwhen the
load is connected to VDDor VSS.
Applications Information
Power-Supply ConsiderationsThe MAX4490/MAX4491/MAX4492 operate from a sin-
gle 2.7V to 5.5V supply or from dual ±1.35V to ±2.75V
supplies with typically 800µA supply current per ampli-
fier. A high power-supply rejection ratio of 100dB
allows for extended operation from a decaying battery
voltage, thereby simplifying designs for portable appli-
cations. For single-supply operation, bypass the power
supply with a 0.1µF ceramic capacitor placed close to
the VDDpin. For dual-supply operation, bypass each
supply to ground.
Input CapacitanceOne consequence of the parallel-connected differential
input stages for rail-to-rail operation is a relatively large
input capacitance CIN(typically 5pF). This introduces a
pole at frequency (2πR′CIN)-1, where R′is the parallel
combination of the gain-setting resistors for the invert-
ing or noninverting amplifier configuration (Figure 2). If
the pole frequency is less than or comparable to the
unity-gain bandwidth (10MHz), the phase margin will
be reduced, and the amplifier will exhibit degraded
AC performance through either ringing in the step
response or sustained oscillations. The pole frequency is
10MHz when R′= 3.2kΩ. To maximize stability, R′<3kΩ
is recommended.
Applications that require rail-to-rail operation with mini-
mal loading (for small VDD- VOHand VOL- VSS) will
typically require R′values >3kΩ. To improve step
response under these conditions, connect a small
capacitor Cfbetween the inverting input and output.
Choose Cfas follows: = 5(R / Rf) [pf]
where Rfis the feedback resistor and R is the gain-set-
ting resistor (Figure 2).
Figure 3 shows the step response for a noninverting
amplifier subject to R′= 4kΩwith and without the Cf
feedback capacitor.
MAX4490/MAX4491/MAX4492
Low-Cost, High-Slew-Rate,
Rail-to-Rail I/O Op Amps in SC70Figure 1a. Output Source Current vs. Temperature
Figure 1b. Output Sink Current vs. Temperature
TEMPERATURE (°C)
OUTPUT SOURCE CURRENT (mA)
VDD - VOH = 200mV
VDD - VOH = 100mV
VDD - VOH = 50mV
VDD = 5V
VDD = 2.7V
TEMPERATURE (°C)
OUTPUT SINK CURRENT (mA)
VDD - VOH = 200mV
VDD - VOH = 100mV
VDD - VOH = 50mV
VDD = 5V
VDD = 2.7V
Figure 2. Inverting and Noninverting Amplifier with Feedback
Compensation
MAX4490
VIN
VOUT
R′ = R || Rf
RfCf = RCIN
MAX4490
VIN
VOUT
R′ = R || Rf
RfCf = RCIN
INVERTING
NONINVERTING
