MAX9021 Maxim, MAX9021 Datasheet

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MAX9021

Manufacturer Part Number
MAX9021
Description
The MAX9021/MAX9022/MAX9024 single/dual/quad comparators are optimized for low-power consumption while still providing a fast output response
Manufacturer
Maxim
Datasheet

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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 con-
sume 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 oscil-
lations 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 switch-
ing current during output transitions, eliminating power-
supply 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
SO packages, and the MAX9024 quad comparator is
available in 14-pin TSSOP and SO packages.
19-1842; Rev 2; 1/07
µMAX is a registered trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Battery-Powered
Portable Systems
Mobile Communications
Sensor-Signal Detection
Photodiode Preamps
TOP VIEW
Micropower, Ultra-Small, Single/Dual/Quad,
V
IN+
IN-
________________________________________________________________ Maxim Integrated Products
SS
1
2
3
SC70/SOT23
General Description
MAX9021
Digital Line Receivers
Keyless Entry Systems
Threshold Detectors/
Discriminators
Applications
4
5
V
OUT
DD
OUTA
INA+
INA-
V
SS
®
1
2
4
3
S0T23/µMAX/SO
, and
Single-Supply Comparators
MAX9022
♦ Low-Cost Solution Available in Space-Saving
♦ 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
Typical Application Circuit appears at end of data sheet.
MAX9021AXK-T -40°C to +125°C
MAX9021AUK-T -40°C to +125°C
MAX9022AKA-T -40°C to +125°C
MAX9022AUA
MAX9022ASA
MAX9024AUD
MAX9024ASD
SC70 Packages (Half the Size of SOT23)
7
6
5
8
5-Pin SC70 (MAX9021)
8-Pin SOT23 (MAX9022)
8-Pin µMAX (MAX9022)
14-Pin TSSOP (MAX9024)
PA RT
V
OUTB
INB-
INB+
DD
OUTA
OUTB
INA+
INB+
INA-
INB-
V
DD
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
1
2
3
4
5
6
7
TEMP RANGE
Ordering Information
TSSOP/SO
MAX9024
Pin Configurations
PIN-
PACKAGE
14
13
12
11
10
5 SC70-5
5 SOT23-5
8 SOT23-8
8 µMAX
8 SO
14 TSSOP
14 SO
9
8
OUTD
IND-
IND+
V
INC+
INC-
OUTC
SS
Features
PKG
CODE
X5-1
U5-1
K8-5
U8-1
S8-2
U14-1
S14-2
1

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MAX9021 Summary of contents

Page 1

... The design of the comparator-output stage substantially reduces switch- ing current during output transitions, eliminating power- supply 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 SO packages, and the MAX9024 quad comparator is available in 14-pin TSSOP and SO packages ...

Page 2

... SOT23 (derate 9.1mW/°C above +70°C).............727mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...

Page 3

Micropower, Ultra-Small, Single/Dual/Quad 5V 10kΩ SUPPLY CURRENT vs. SUPPLY VOLTAGE 3.0 2.9 2.8 2.7 2 SUPPLY VOLTAGE (V) INPUT OFFSET VOLTAGE ...

Page 4

Micropower, Ultra-Small, Single/Dual/Quad, Single-Supply Comparators ( 10kΩ PROPAGATION DELAY vs. TEMPERATURE -50 -25 ...

Page 5

... Detailed Description The MAX9021/MAX9022/MAX9024 are single/dual/ quad, low-cost, low-power comparators that consume only 2.8µA and provide a propagation delay, t cally 3µs. They have an operating-supply voltage from 2.5V to 5.5V when operating from a single supply and from ±1.25V to ±2.75V when operating from dual power supplies ...

Page 6

... Even severe phase distortion is eliminated from the digital output signal. Be sure to choose R1 and C1 so that: = 2.475V. TL where f CAR digital data stream IN+ OUT 10kΩ IN- MAX9021 0.1µ Board Layout and Bypassing Biasing for Data Recovery π f >> R1C1) CAR is the fundamental carrier frequency of the ...

Page 7

... MAX9021 R2 (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) _______________________________________________________________________________________ Single-Supply Comparators MAX9021 TRANSISTOR COUNT: 106 MAX9022 TRANSISTOR COUNT: 212 MAX9024 TRANSISTOR COUNT: 424 0.1µF OUT RL Chip Information ...

Page 8

... Revision History Pages changed at Rev Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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