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Single/Dual/Quad, +1.8V/10µA, SOT23, Beyond-the-Rails Op Amps

Product Details

Key Features

Applications/Uses

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 0.09
Input IBIAS (nA) (max) 6
VOS (µV) (max) 1400
VSUPPLY (Total) (V) (min) 1.8
VSUPPLY (Total) (V) (max) 5.5
# Amplifiers 1
Rail to Rail Input/Output
Package/Pins SOT23/5
Budgetary
Price (See Notes)
$1.62 @1k
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Simplified Block Diagram

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Parameters

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 0.09
Input IBIAS (nA) (max) 6
VOS (µV) (max) 1400
VSUPPLY (Total) (V) (min) 1.8
VSUPPLY (Total) (V) (max) 5.5
# Amplifiers 1
Rail to Rail Input/Output
Package/Pins SOT23/5
Budgetary
Price (See Notes)
$1.62 @1k

Key Features

  • Ultra-Low-Voltage Operation:
    • Guaranteed Down to +1.8V
    • Typical Operation to +1.5V
  • Ultra-Low Power Consumption:
    • 10µA Supply Current per Amplifier
    • 1µA Shutdown Mode (MAX4241/MAX4243)
    • Up to 200,000 Hours Operation from Two AA Alkaline Cells
  • Beyond-the-Rails Input Common-Mode Range
  • Outputs Swing Rail-to-Rail
  • No Phase Reversal for Overdriven Inputs
  • 200µV Input Offset Voltage
  • Unity-Gain Stable for Capacitive Loads up to 200pF
  • 90kHz Gain-Bandwidth Product
  • Available in Space-Saving 5-Pin SOT23 and 8-Pin µMAX® Packages

Applications/Uses

  • Cellular Handsets
  • Cellular Phones
  • Digital Cameras (DIGICAMs)
  • Digital Scales
  • GPS Solutions
  • MP3 and Portable Media Players
  • Notebook Computers
  • PDAs
  • Portable/Battery-Powered Electronic Equipment
  • Sensor Amplifiers
  • Strain Gauges
  • Two-Cell Battery Powered Systems

Description

The MAX4240–MAX4244 family of micropower op amps operate from a single +1.8V to +5.5V supply or dual ±0.9V to ±2.75V supplies and have Beyond-the-Rails™ inputs and rail-to-rail output capabilities. These amplifiers provide a 90kHz gain-bandwidth product while using only 10µA of supply current per amplifier. The MAX4241/MAX4243 have a low-power shutdown mode that reduces supply current to less than 1µA and forces the output into a high-impedance state. Although the minimum operating voltage is specified at +1.8V, these devices typically operate down to +1.5V. The combination of ultra-low-voltage operation, Beyond-the-Rails inputs, rail-to-rail outputs, and ultra-low power consumption makes these devices ideal for any portable/two-cell battery-powered system.

These amplifiers have an input common-mode range that extends 200mV beyond each rail, and their outputs typically swing to within 9mV of the rails with a 100kΩ load. Beyond-the-Rails input and rail-to-rail output characteristics allow the full power-supply voltage to be used for signal range. The combination 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 MAX4240 is offered in a space-saving 5-pin SOT23 package. All specifications are guaranteed over the -40°C to +85°C extended temperature range.

Simplified Block Diagram

MAX4240, MAX4241, MAX4242, MAX4243, MAX4244: Pin Configurations MAX4240, MAX4241, MAX4242, MAX4243, MAX4244: Pin Configurations Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .