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MAX972 Datasheet

  • MAX972

  • " Dual, Ultra-Low- Power, Open- Drain Comparator"

  • 325.37KB

  • Maxim

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19-0450; Rev 3; 2/03
Ultra-Low-Power, Open-Drain,
Single/Dual-Supply Comparators
General Description
The MAX971鈥揗AX974 and MAX981鈥揗AX984 single/
dual/quad low-voltage comparators feature the lowest
power consumption available. These micropower
devices draw less than 4碌A supply current over
temperature (MAX971/MAX972/MAX981/MAX982), and
include an internal 1.182V 卤1% (MAX971/MAX973/
MAX974) or 卤2% (MAX981鈥揗AX984) voltage reference
and programmable hysteresis.
Ideal for 3V or 5V single-supply applications, these
devices operate from a single 2.5V to 11V supply (or
卤1.25V to 卤5.5V dual supplies), and each comparator鈥檚
input voltage ranges from the negative supply rail to within
1.3V of the positive supply.
The single MAX971/MAX981 and the dual MAX973/
MAX982/MAX983 provide a unique, simple method for
adding hysteresis without feedback or complicated
equations, simply by using the HYST pin plus two
resistors.
The MAX971鈥揗AX974 and MAX981鈥揗AX984鈥檚 open-
drain outputs permit wire-ORed configurations. Thanks to
an 11V output range and separate GND pin for the output
transistor (MAX971/MAX974, MAX981/MAX984), these
devices are ideal for level translators and bipolar to single-
ended converters. For similar devices with complementary
output stages, see the MAX921鈥揗AX924 (1% reference)
and the MAX931鈥揗AX934 (2% reference).
COMPARATORS
PER
PACKAGE
INTERNAL
HYSTERESIS
INTERNAL
PRECISION
REFERENCE
Features
o
Available in Ultra-Small Packages:
UCSP鈩?(MAX972)
碌MAX (MAX9_1/MAX9_2/MAX9_3)
o
Ultra-Low Quiescent Current (4碌A, max)
Over Extended Temp Range (MAX971/MAX981)
o
Power Supplies:
Single 2.5V to 11V
Dual 卤1.25V to 卤5.5V
o
Input Voltage Range Includes Negative Supply
o
Internal Bandgap Reference
1.182V 卤1% (MAX97_)
1.182V 卤2% (MAX98_)
o
12碌s Propagation Delay (10mV Overdrive)
o
Output Has Separate GND Pin (MAX9_1/MAX9_4)
MAX971鈥揗AX974/MAX981鈥揗AX984
Applications
Battery-Powered
Systems
Threshold Detectors
Window Comparators
Level Translators
Oscillator Circuits
Ordering Information
PART
MAX971CPA
MAX971CSA
MAX971CUA
TEMP RANGE
0掳C to +70掳C
0掳C to +70掳C
0掳C to +70掳C
PIN-PACKAGE
8 Plastic Dip
8 SO
8 碌MAX
PACKAGE
Ordering Information continued at end of data sheet.
PART
Typical Operating Circuit
V
IN
7
V+
3 IN+
OUT 8
4 IN-
MAX971
MAX972
MAX973
MAX974
MAX981
MAX982
MAX983
MAX984
1%
None
1%
1%
2%
2%
2%
2%
1
2
2
4
1
2
2
4
Yes
No
Yes
No
Yes
Yes
Yes
No
8-Pin
DIP/SO/碌MAX
8-Pin UCSP/
DIP/SO/碌MAX
8-Pin
DIP/SO/碌MAX
16-Pin DIP/SO
8-Pin
DIP/SO/碌MAX
8-Pin
DIP/SO/碌MAX
8-Pin
DIP/SO/碌MAX
16-Pin DIP/SO
5 HYST
6 REF
V-
2
MAX971
MAX981
GND
1
THRESHOLD DETECTOR
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________________________________ 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX972 PDF文件相关型号

MAX973,MAX974ESE,MAX982,MAX983,MAX983CUA,MAX984ESE

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