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Micropower, Ultra-Small, Single/Dual/Quad Single-Supply Comparators

Product Details

Key Features

Parametric specs for Comparators
tPD (ns) (typ) 3000
VOS (mV) (max) 8
VSUPPLY (Total) (V) (min) 2.5
VSUPPLY (Total) (V) (max) 5.5
# Comparators 4
Input Range to Neg. Rail
ICC per Comp. (µA) (max) 5
Logic Out Push-Pull
Oper. Temp. (°C) -40 to +125
Package/Pins SOIC (N)/14
TSSOP/14
Budgetary
Price (See Notes)
0.68
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Simplified Block Diagram

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Parameters

Parametric specs for Comparators
tPD (ns) (typ) 3000
VOS (mV) (max) 8
VSUPPLY (Total) (V) (min) 2.5
VSUPPLY (Total) (V) (max) 5.5
# Comparators 4
Input Range to Neg. Rail
ICC per Comp. (µA) (max) 5
Logic Out Push-Pull
Oper. Temp. (°C) -40 to +125
Package/Pins SOIC (N)/14
TSSOP/14
Budgetary
Price (See Notes)
0.68

Key Features

  • Low-Cost Solution Available in Space-Saving SC70 Packages (Half the Size of SOT23)
  • Low 2.8µA Supply Current
  • 3µs Propagation Delay
  • Internal 4mV Comparator Hysteresis
  • Comparator Output Swings Rail-to-Rail
  • 2.5 to 5.5V Single-Supply Voltage Range
  • No Phase Reversal for Overdriven Inputs
  • Space-Saving Packages
    • 5-Pin SC70 (MAX9021)
    • 8-Pin SOT23 (MAX9022)
    • 8-Pin µMAX (MAX9022)
    • 14-Pin TSSOP (MAX9024)

Applications/Uses

  • Battery-Powered
  • Digital Line Receivers
  • Keyless Entry Systems
  • Mobile Communications
  • Photodiode Preamps
  • Portable Systems
  • Sensor-Signal Detection
  • Threshold Detectors/Discriminators

Description

The MAX9021/MAX9022/MAX9024 single/dual/quad comparators are optimized for low-power consumption while still providing a fast output response. They are designed for single-supply applications from 2.5V to 5.5V, but can also operate from dual supplies. These comparators have a 3µs propagation delay and consume 2.8µA of supply current per comparator over the -40°C to +125°C operating temperature range. The combination of low-power, single-supply operation down to 2.5V, and ultra-small footprint makes these devices ideal for portable applications.

The MAX9021/MAX9022/MAX9024 have 4mV of built-in hysteresis to provide noise immunity and prevent oscillations even with a slow-moving input signal. The input common-mode range extends from the negative supply to within 1.1V of the positive supply. The design of the comparator-output stage substantially reduces switching current during output transitions, eliminating powersupply glitches.

The MAX9021 single comparator is available in tiny 5-pin SC70 and SOT23 packages. The MAX9022 dual comparator is available in 8-pin SOT23, µMAX®, and SO packages, and the MAX9024 quad comparator is available in 14-pin TSSOP and SO packages.

Simplified Block Diagram

MAX9021, MAX9022, MAX9024: Typical Operating Circuit MAX9021, MAX9022, MAX9024: 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 .