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Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps with +1.2V Buffered Reference

Low IBIAS +1.4V/800nA, Rail-to-Rail Op Amplifiers with +1.2V Buffered Reference

Product Details

The single MAX4036/MAX4037 and dual MAX4038/MAX4039 operational amplifiers operate from a single +1.4V to +3.6V (without reference) or +1.8V to +3.6V (with reference) supply and consume only 800nA of supply current per amplifier, and 1.1µA for the optional reference. The MAX4036/MAX4038 feature a common-mode input voltage range from 0V to VDD - 0.4V at VDD = 1.4V. The MAX4037/MAX4039 feature a 1.232V voltage reference capable of sourcing 100µA and sinking 20µA.

The MAX4036–MAX4039s' rail-to-rail outputs drive 5kΩ loads to within 25mV of the rails. Ultra-low supply current, low operating voltage, and rail-to-rail outputs make the MAX4036–MAX4039 ideal for use in single-cell lithium-ion (Li+), or two-cell NiCd/NiMH/alkaline battery-powered applications.

The MAX4036 is available in an SC70 package, the MAX4037 in a SOT23 package, and the MAX4038/MAX4039 in UCSP™, µMAX®, and TDFN packages.

Key Features

  • Ultra-Low 800nA per Amplifier Supply Current
  • Ultra-Low 1.4V Supply Voltage Operation (1.8V for MAX4037/MAX4039)
  • Rail-to-Rail Outputs Drive 5kΩ and 5000pF Load
  • 1.232V ±0.5%, 120ppm/°C (max) Reference (MAX4037/MAX4039)
  • No External Reference Bypass Capacitor Required
  • No Phase Reversal for Overdriven Inputs
  • Low 1.0pA (typ) Input Bias Current
  • Low 200µV Input Offset Voltage
  • Unity-Gain Stable
  • Available in Tiny UCSP, SC70, SOT23, TDFN, and µMAX Packages
  • Available in -40°C to +125°C Temperature Range (MAX4036A/MAX4038A)

Applications/Uses

  • Active Badges
  • Battery-Powered/Solar-Powered Systems
  • Cellular Handsets
  • Digital Cameras (DIGICAMs)
  • Electrometer Amplifiers
  • Glucose Meters
  • GPS Solutions
  • IP Camera
  • Micropower Thermostats and Potentiostats
  • MP3 and Portable Media Players
  • Pagers and Cell Phones
  • pH Meters
  • Portable Medical Instrumentation
  • Remote Sensor Amplifiers
Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 0.004
Input IBIAS (nA) (max) 0.01
VOS (µV) (max) 2000
VSUPPLY (Total) (V) (min) 1.4
VSUPPLY (Total) (V) (max) 3.6
# Amplifiers 1
Rail to Rail Output Only
Package/Pins SC70/5
Budgetary
Price (See Notes)
$0.73 @1k
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Simplified Block Diagram

MAX4036, MAX4037, MAX4038, MAX4039: Typical Operating Circuit MAX4036, MAX4037, MAX4038, MAX4039: Typical Operating Circuit Zoom icon

Technical Docs

Design & Development

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Parameters

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 0.004
Input IBIAS (nA) (max) 0.01
VOS (µV) (max) 2000
VSUPPLY (Total) (V) (min) 1.4
VSUPPLY (Total) (V) (max) 3.6
# Amplifiers 1
Rail to Rail Output Only
Package/Pins SC70/5
Budgetary
Price (See Notes)
$0.73 @1k

Key Features

  • Ultra-Low 800nA per Amplifier Supply Current
  • Ultra-Low 1.4V Supply Voltage Operation (1.8V for MAX4037/MAX4039)
  • Rail-to-Rail Outputs Drive 5kΩ and 5000pF Load
  • 1.232V ±0.5%, 120ppm/°C (max) Reference (MAX4037/MAX4039)
  • No External Reference Bypass Capacitor Required
  • No Phase Reversal for Overdriven Inputs
  • Low 1.0pA (typ) Input Bias Current
  • Low 200µV Input Offset Voltage
  • Unity-Gain Stable
  • Available in Tiny UCSP, SC70, SOT23, TDFN, and µMAX Packages
  • Available in -40°C to +125°C Temperature Range (MAX4036A/MAX4038A)

Applications/Uses

  • Active Badges
  • Battery-Powered/Solar-Powered Systems
  • Cellular Handsets
  • Digital Cameras (DIGICAMs)
  • Electrometer Amplifiers
  • Glucose Meters
  • GPS Solutions
  • IP Camera
  • Micropower Thermostats and Potentiostats
  • MP3 and Portable Media Players
  • Pagers and Cell Phones
  • pH Meters
  • Portable Medical Instrumentation
  • Remote Sensor Amplifiers

Description

The single MAX4036/MAX4037 and dual MAX4038/MAX4039 operational amplifiers operate from a single +1.4V to +3.6V (without reference) or +1.8V to +3.6V (with reference) supply and consume only 800nA of supply current per amplifier, and 1.1µA for the optional reference. The MAX4036/MAX4038 feature a common-mode input voltage range from 0V to VDD - 0.4V at VDD = 1.4V. The MAX4037/MAX4039 feature a 1.232V voltage reference capable of sourcing 100µA and sinking 20µA.

The MAX4036–MAX4039s' rail-to-rail outputs drive 5kΩ loads to within 25mV of the rails. Ultra-low supply current, low operating voltage, and rail-to-rail outputs make the MAX4036–MAX4039 ideal for use in single-cell lithium-ion (Li+), or two-cell NiCd/NiMH/alkaline battery-powered applications.

The MAX4036 is available in an SC70 package, the MAX4037 in a SOT23 package, and the MAX4038/MAX4039 in UCSP™, µMAX®, and TDFN packages.

Simplified Block Diagram

MAX4036, MAX4037, MAX4038, MAX4039: Typical Operating Circuit MAX4036, MAX4037, MAX4038, MAX4039: Typical Operating Circuit 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