MAX4289EUT+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX4289EUT+T ,1.0V Micropower, SOT23, Operational AmplifierApplications♦ Available in a Tiny 6-Pin SOT23 (3mm ✕ 3mm)Single-Cell Systems Strain GaugesPortable ..
MAX428ACSA ,Single/Dual/Quad High-Speed / Fast-Settling / High Output Current Operational AmplifierELECTRICAL CHARACTERISTICS—MAX408 (V = ±5V, T = +25°C, unless otherwise noted.)S AMAX408C MAX408ACP ..
MAX428ACSA ,Single/Dual/Quad High-Speed / Fast-Settling / High Output Current Operational AmplifierELECTRICAL CHARACTERISTICS—MAX408 (V = ±5V, T = +25°C, unless otherwise noted.)S AMAX408C MAX408ACP ..
MAX428CPA ,Single/Dual/Quad High-Speed / Fast-Settling / High Output Current Operational AmplifierApplications Ordering InformationVideo AmplifiersPART TEMP. RANGE PIN-PACKAGETest EquipmentMAX408AC ..
MAX428CPA ,Single/Dual/Quad High-Speed / Fast-Settling / High Output Current Operational AmplifierFeaturesThe MAX408/428/448 are high speed general purpose' Fast Settling Time: ±0.1% In 150nsmonol ..
MAX428CSA ,Single/Dual/Quad High-Speed / Fast-Settling / High Output Current Operational AmplifierApplications Ordering InformationVideo AmplifiersPART TEMP. RANGE PIN-PACKAGETest EquipmentMAX408AC ..
MAX811SEUS ,4-Pin µP Voltage Monitors with Manual Reset InputElectrical Characteristics(V = 5V for L/M versions, V = 3.3V for T/S versions, V = 3V for R version ..
MAX811SEUS/T ,Microprocessor voltage monitor with manual reset input. Reset threshold voltage 2.93VGeneral Description ________
MAX811SEUS+ ,4-Pin µP Voltage Monitors with Manual Reset InputApplicationsSelect the letter corresponding to the desired nominal resetthreshold voltage, and inse ..
MAX811SEUS+T ,4-Pin µP Voltage Monitors with Manual Reset Input4-Pin µP Voltage Monitors MAX811/MAX812with Manual Reset Input
MAX811SEUS+T ,4-Pin µP Voltage Monitors with Manual Reset InputGeneral Description Benefits and
MAX811SEUS-T ,Microprocessor voltage monitor with manual reset input. Reset threshold voltage 2.93VGeneral Description ________

MAX4289EUT+T
1.0V Micropower, SOT23, Operational Amplifier
General Description
The MAX4289 micropower, operational amplifier is opti-
mized for ultra-low supply voltage operation. The ampli-
fier consumes only 9µA of quiescent supply current and
is fully specified for operation from a single 1.0V to 5.5V
power supply. This ultra-low voltage operation together
with the low quiescent current consumption make the
MAX4289 ideal for use in battery-powered systems
operated from as little as a single alkaline cell. The
MAX4289 also features a wide input common-mode
range that includes the ground, and an output voltage
swing that is virtually Rail-to-Rail®, allowing almost all of
the power supply to be used for signal voltage.
The low input offset voltage and low input bias current
specifications along with the high open-loop gain make
the MAX4289 well-suited to applications requiring a
high degree of precision.
The MAX4289 is available in a tiny 6-pin SOT23 pack-
age. All specifications are guaranteed over the extend-
ed temperature range of -40°C to +85°C.
Applications
FeaturesUltra-Low Voltage Operation: Guaranteed
Specifications from 1.0V to 5.5VInput Common-Mode Range: 0 to (VCC- 0.2V)Ultra-Low Power Consumption: 9µA Supply
Current (typ)Optimized for Operation from Single-Cell
Battery-Powered SystemsCompatible with 3.0V and 5.0V Single-Supply
SystemsLow Offset Voltage: 0.2mV Low Input Bias Current: 5nA High Open-Loop Voltage Gain: 90dB Rail-to-Rail Output Stage Drives 5kΩLoadNo Output Phase Reversal for Overdriven InputsAvailable in a Tiny 6-Pin SOT23 (3mm ✕3mm)
MAX4289
1.0V Micropower, SOT23, Operational Amplifier
GND
IN-IN+VCCOUT
MAX4289
SOT23-6
TOP VIEW
OUT
N.C.GND
N.C.
VCCIN-
IN+
N.C.
SO-8
MAX42895N.C.
Pin ConfigurationsTypical Operating Characteristic
Ordering Information
19-2023; Rev 0; 1/02
PARTTEMP RANGEPIN-
PACKAGE
TOP
MARK
MAX4289EUT-T-40°C to +85°C6 SOT23-6AARX
MAX4289ESA-40°C to +85°C8 SO—
POWER-SUPPLY REJECTION RATIO
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
PSRR (dB)
TA = +85°C
TA = +25°C
TA = -40°C
Single-Cell Systems
Portable Electronic
Equipment
Battery-Powered
Instrumentation
Hearing Aids Using Zinc
Air Battery
Strain Gauges
Cellular Phones
Notebook Computers
Sensor Amplifiers
Portable Communication
Devices
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4289
1.0V Micropower, SOT23, Operational Amplifier
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= 3V, VCM= 0, VOUT= VCC/2, RLtied to VCC/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.
Power-Supply Voltage (VCCto GND).......................................6V
Input Voltage (IN+ or IN-)...........................(VCC + 0.3V) to -0.3V
Input Current (IN+ or IN-)....................................................20mA
Output Short-Circuit Duration to VCCor GND............Continuous
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C).............696mW
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
TA = +25°C1.05.5Supply Voltage RangeVCCInferred from the
PSRR testsTA = -40°C to +85°C1.25.5V
VCC = 1.0V, TA = +25°C914
VCC = 3.0V1225Quiescent Supply CurrentICC
VCC = 5.5V1840
TA = +25°C±0.2±2.0Input Offset VoltageVOSTA = TMIN to TMAX±6.0mV
Input Bias CurrentIB±5±15nA
Input Offset CurrentIOS±0.5±2.0nA
Differential Input ResistanceRIN50MΩ
VCC = 1.2V0VCC - 0.2Input Common-Mode Voltage
RangeVCMInferred from
CMRR testVCC = 3.0V0VCC - 0.8
VCC = 1.2V, 0 ≤ VCC - 0.2V57
VCC = 1.2V, 0 ≤ VCM ≤ VCC - 0.8V5785Common-Mode Rejection RatioCMRR
VCC = 3.0V, 0 ≤ VCM ≤ VCC - 0.8V57110
1.0V ≤ VCC ≤ 5.5V, TA = +25°C5475Power-Supply Rejection RatioPSRR1.2V ≤ VCC ≤ 5.5V, TA = -40°C to +85°C5875dB
RL = 100kΩ (50mV ≤ VOUT ≤ VCC - 50mV)110Large-Signal Voltage GainAVOLRL = 5kΩ (100mV ≤ VOUT ≤ VCC - 100mV)8090dB
RL = 100kΩ0.210Output Voltage Swing HighVOHSpecified as
|VCC - VOH|RL = 5kΩ740mV
RL = 100kΩ0.410Output Voltage Swing LowVOLSpecified as VOLRL = 5kΩ740mV
MAX4289
1.0V Micropower, SOT23, Operational Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(VCC= 3V, VCM= 0, VOUT= VCC/2, RLtied to VCC/2, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
(Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
VCC = 1.0V0.6Output Short-Circuit CurrentIOUTSourcing/sinking
currentVCC = 3.0V19mA
Power-Up TimetPU300µs
Input CapacitanceCIN3.0pF
Gain-Bandwidth ProductGBW17kHz
Phase MarginθM80d egr ees
Gain MarginGM10dB
Slew RateSR6V/ms
Capacitive-Load StabilityAVCL = +1V/V, no sustained oscillations200pF
Settling Time to 0.1%tSAVCL = +1V/V, no sustained oscillations75µs
Note 1:All specifications are 100% production tested at TA= +25°C. Temperature specification limits are guaranteed by design.
Typical Operating Characteristics
(VCC= 3V, VCM= 0, RLto VCC/2, TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
MAX4289 toc01
SUPPLY CURRENT (
TEMPERATURE (°C)
VCC = 3V
VCC = 1V
INPUT OFFSET VOLTAGE
vs. INPUT COMMON-MODE VOLTAGE
MAX4289 toc02
INPUT COMMON-MODE VOLTAGE (V)
INPUT OFFSET VOLTAGE (mV)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4289 toc03
INPUT OFFSET VOLTAGE (mV)
TEMPERATURE (°C)
MAX4289
1.0V Micropower, SOT23, Operational Amplifierypical Operating Characteristics (continued)
(VCC= 3V, VCM= 0, RLto VCC/2, TA= +25°C, unless otherwise noted.)
INPUT BIAS CURENT
vs. TEMPERATURE
MAX4289 toc04
TEMPERATURE (°C)
INPUT BIAS CURRENT (nA)
INPUT BIAS CURRENT
vs. INPUT COMMON-MODE VOLTAGE
MAX4289 toc05
INPUT COMMON-MODE VOLTAGE (V)
INPUT BIAS CURRENT (nA)
OUTPUT SWING HIGH
vs. TEMPERATURE
MAX4289 toc06
TEMPERATURE (°C)
(mV)
RL CONNECTED TO GND
RL = 5kΩ
RL = 100kΩ
OUTPUT SWING LOW
vs. TEMPERATURE
MAX4289 toc07
TEMPERATURE (°C)
(mV)
RL CONNECTED TO VCC
RL = 5kΩ
RL = 100kΩ
OPEN-LOOP GAIN
vs. OUTPUT SWING LOW
MAX4289 toc08
VOUT FROM GND (mV)
GAIN (dB)RL = 5kΩ
RL = 100kΩ
OPEN-LOOP GAIN
vs. OUTPUT SWING HIGH
MAX4289 toc09
VOUT FROM VCC (mV)
GAIN (dB)
RL = 5kΩ
RL = 100kΩ
OPEN-LOOP GAIN vs. TEMPERATURE
MAX4289 toc10
TEMPERATURE (°C)
GAIN (dB)
RL = 5kΩ
RL = 100kΩ
RL CONNECTED TO GND
OPEN-LOOP GAIN vs. TEMPERATURE
MAX4289 toc11
TEMPERATURE (°C)
GAIN (dB)
RL = 5kΩ
RL = 100kΩ
RL CONNECTED TO VCC
GAIN AND PHASE vs. FREQUENCY
(CL = 0)
MAX4289 toc12
FREQUENCY (kHz)
GAIN (dB)20
PHASE (DEGREES)
GAIN
PHASE
MAX4289
1.0V Micropower, SOT23, Operational Amplifier
10μs/div
SMALL-SIGNAL TRANSIENT RESPONSE
50mV/div
OUT
50mV/div
MAX4289 toc13
200μs/div
LARGE-SIGNAL TRANSIENT RESPONSE
1V/div
OUT
1V/div
MAX4289 toc14
MINIMUM-OPERATING VOLTAGE
vs. TEMPERATURE
MAX4289 toc15
TEMPERATURE (°C)
(V)
PSRR > 70dB
OUTPUT SINKING CURRENT
vs. OUTPUT VOLTAGE
MAX4289 toc16
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
VCC = 1V
SINKING CURRENT1.00.51.52.02.53.0
OUTPUT SINKING CURRENT
vs. OUTPUT VOLTAGE
MAX4289 toc17
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
VCC = 3V
SINKING CURRENT
OUTPUT SOURCING CURRENT
vs. OUTPUT VOLTAGE
MAX4289 toc18
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
VCC = 1V
SOURCING CURRENT1.00.51.52.02.53.0
OUTPUT SOURCING CURRENT
vs. OUTPUT VOLTAGE
MAX4289 toc19
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
VCC = 3V
SOURCING CURRENTypical Operating Characteristics (continued)
(VCC= 3V, VCM= 0, RLto VCC/2, TA= +25°C, unless otherwise noted.)
MAX4289
Detailed Description
The MAX4289 consumes ultra-low power (9µA supply
current typically) and has a rail-to-rail output stage that
is specifically designed for low-voltage operation. The
input common-mode voltage range extends from VCC-
0.2V to ground, although full rail-to-rail input range is
possible with degraded performance. The input offset
voltage is typically 200µV. Low-operating supply volt-
age, low supply current, and rail-to-rail outputs make
this operational amplifier an excellent choice for preci-
sion or general-purpose, low-voltage, battery-powered
systems.
Rail-to-Rail Output Stage
The MAX4289 output stage can drive a 5kΩload and
still swing to within 7mV of the rails. Figure 1 shows the
output voltage swing of the MAX4289 configured as a
unity-gain buffer, powered from a single 2V supply volt-
age. The output for this setup typically swings from
+0.4mV to (VCC- 0.2mV) with a 100kΩload.
Applications Information
Power-Supply Considerations
The MAX4289 operates from a single 1.0V to 5.5V supply
and consumes only 9µA of supply current. A high power-
supply rejection ratio of 75dB allows the amplifier to be
powered directly off a decaying battery voltage, simplify-
ing design and extending battery life. The MAX4289 is
ideally suited for single-cell battery-powered systems.
Figures 2 and 3 show the supply current and PSRR as a
function of supply voltage and temperature.
1.0V Micropower, SOT23, Operational Amplifier
Pin Description
PINSOT23NAMEFUNCTION
1, 5, 85N.C.No Connection. Not internally connected.4IN-Inverting Input3IN+Noninverting Input2GNDGround1OUTAmplifier OutputVCCPositive Supply. Bypass with a 0.1µF capacitor to GND.
200μs/div
500mV/div
OUT
500mV/divVIN = 2.0V
fIN = 1kHz
RL = 100kΩ
Figure 1. Rail-to-Rail Input/Output Voltage Range13456
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (TA = +85°C
TA = +25°C
TA = -40°C
Figure 2. ICCvs. VCCOver the Temperature Range

Partno	Mfg	Dc	Qty	Available	Descript
MAX4289EUT+T \|MAX4289EUTT	MAXIM	N/a	10	avai	1.0V Micropower, SOT23, Operational Amplifier