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MAX9021, MAX9022, MAX9024

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

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Active: In Production.

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.
 

Data Sheet

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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
   

Key Specifications:

Comparators
Part Number Comp-
arators
tPD
(ns)
Input Range VSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Comp.
(µA)
VOS
(mV)
VOS
(mV)
Logic Out Oper. Temp.
(°C)
Package/Pins Smallest Available Pckg.
(mm2)
Budgetary Price
typ min max max typ max max w/pins See Notes
MAX9021  1 3000 to Neg. Rail 2.5 5.5 5 1 8 Push-Pull -40 to +125
SC70/5
SOT/5
5.3 $0.42 @1k
MAX9022  2
µMAX/8
SOIC(N)/8
SOT/8
9 $0.48 @1k
MAX9024  4
SOIC(N)/14
TSSOP/14
33.4 $0.69 @1k
See All Comparators (80)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

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

More Information

Topmark Coding MAX9021
Topmark Coding MAX9022
New Product Press Release 2000-12-27 ]

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Document Ref.: 19-1842 Rev 2; 2007-01-18
This page last modified: 2007-06-14




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