MAX4289:1.0V Micropower, SOT23, Operational Amplifier

Industry's First +1V Micropower SOT23 Op Amp

The MAX4289 micropower, operational amplifier is optimized for ultra-low supply voltage operation. The amplifier 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 package. All specifications are guaranteed over the extended temperature range of -40°C to +85°C.

Key Features
  • Ultra-Low Voltage Operation: Guaranteed Specifications from 1.0V to 5.5V
  • Input Common-Mode Range: 0 to (VCC - 0.2V)
  • Ultra-Low Power Consumption: 9µA Supply Current (typ)
  • Optimized for Operation from Single-Cell Battery-Powered Systems
  • Compatible with 3.0V and 5.0V Single-Supply Systems
  • Low Offset Voltage: 0.2mV
  • Low Input Bias Current: 5nA
  • High Open-Loop Voltage Gain: 90dB
  • Rail-to-Rail Output Stage Drives 5kΩ Load
  • No Output Phase Reversal for Overdriven Inputs
  • Available in a Tiny 6-Pin SOT23 (3mm x 3mm)
MAX4289: Pin Configurations
MAX4289: Pin Configurations
  • Air Battery
  • Battery-Powered Instrumentation
  • Cellular Handsets
  • Cellular Phones
  • Digital Cameras (DIGICAMs)
  • Glucose Meters
  • GPS Solutions
  • Hearing Aids Using Zinc
  • IP Camera
  • MP3 and Portable Media Players
  • Notebook Computers
  • Portable Communication Devices
  • Portable Electronic Equipment
  • Sensor Amplifiers
  • Single-Cell Systems
  • Strain Gauges
titleDownload file
MAX4289 Data SheetMAX4289.pdf
Part NumberAmps.Rail to RailVSUPPLY (Total)
ICC per Amp.
Unity Gain BW
minmaxtypmaxtyptypmaxtypSee Notes
MAX42891Output Only15.5920008575150.017SOIC(N)/8
$1.07 @1k
Related Products
  • MAX9101:+1.0V Micropower SOT23 Comparators
  • MAX4291:Ultra-Small, +1.8V, µPower, Rail-to-Rail I/O Op Amps
  • MAX406:Single, Dual, Quad, 1.2µA Max, Single-Supply Op Amps
  • MAX4040:Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4289ESANo Longer AvailableMAX4289ESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX4289ESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX4289ESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX4289ESA-TNo Longer AvailableMAX4289ESA+TN.SO;8 pin-40°C to +85°CSee data sheet
MAX4289EUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX4289EUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX4289EUT-TNo Longer AvailableMAX4289EUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX4289.pdf MAX4289
MAX4289.pdf MAX4289