1. Products
  2. Amplifiers
  3. Operational Amplifiers (Op Amps)
  4. Low Power Op Amps (≤ 1mA/amp)
  5. MAX4491


Features and Benefits

  • +2.7V to +5.5V Single-Supply Operation
  • 10V/µs Slew Rate
  • Rail-to-Rail Input Common-Mode Voltage Range
  • Rail-to-Rail Output Voltage Swing
  • 10MHz Gain-Bandwidth Product
  • Unity-Gain Stable with Capacitive Loads Up to 300pF
  • 50pA Input Bias Current
  • Ultra-Small, 5-Pin SC70 Package (MAX4490)

Product Details

The 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 supply 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 2kΩ resistive 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 guaranteed over the automotive (-40°C to +125°C) temperature range.


  • Audio Signal Conditioning
  • Automotive Sensors
  • Base Station/Wireless Infrastructure
  • Battery-Powered Applications
  • Cellular Handsets
  • Computers: Desktops, Workstations, and Servers
  • Computers: Motherboards
  • Computers: Notebook
  • GPS Solutions
  • High-Side/Low-Side Current Sensors
  • Low-Power, Low-Voltage Applications
  • Portable Equipment
  • RF Power Amplifier Control
  • Sensor Amplifiers

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

MAX4491 Companion Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX4491AKA+ Material Declaration Reliability Data 8-SOT_23-N/A
MAX4491AKA+T Material Declaration Reliability Data 8-SOT_23-N/A
MAX4491AUA+ Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
MAX4491AUA+T Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
Wafer Fabrication Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help