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MAX973CSA+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
General Description
The MAX971–MAX974 and MAX981–MAX984 single/
dual/quad low-voltage comparators feature the lowest
power consumption available. These micropower
devices draw less than 4µA supply current over
temperature (MAX971/MAX972/MAX981/MAX982), and
include an internal 1.182V ±1% (MAX971/MAX973/
MAX974) or ±2% (MAX981–MAX984) 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
±1.25V to ±5.5V dual supplies), and each comparator’s
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–MAX974 and MAX981–MAX984’s 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–MAX924 (1% reference)
and the MAX931–MAX934 (2% reference).
Features
♦ Available in Ultra-Small Packages:
UCSP™ (MAX972)
µMAX (MAX9_1/MAX9_2/MAX9_3)
♦ Ultra-Low Quiescent Current (4µA, max)
Over Extended Temp Range (MAX971/MAX981)
♦ Power Supplies:
Single 2.5V to 11V
Dual ±1.25V to ±5.5V
♦ Input Voltage Range Includes Negative Supply
♦ Internal Bandgap Reference
1.182V ±1% (MAX97_)
1.182V ±2% (MAX98_)
♦ 12µs Propagation Delay (10mV Overdrive)
♦ Output Has Separate GND Pin (MAX9_1/MAX9_4)
Applications
MAX971–MAX974/MAX981–MAX984
Ultra-Low-Power, Open-Drain,
Single/Dual-Supply Comparators
________________________________________________________________________________________ 1
MAX971
MAX981
OUT
IN+
HYST
REF
V-
GND
V+
21
4
5
6
8
3
7
IN-
THRESHOLD DETECTOR
V
IN
Typical Operating Circuit
19-0450; Rev 3; 2/03
Ordering Information continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
PART
INTERNAL
PRECISION
REFERENCE
INTERNAL
HYSTERESIS
PACKAGE
MAX971 1% Yes
8-Pin
DIP/SO/µMAX
MAX972 None No
8-Pin UCSP/
DIP/SO/µMAX
MAX973 1% Yes
8-Pin
DIP/SO/µMAX
MAX974
1% No 16-Pin DIP/SO
MAX981 2% Yes
8-Pin
DIP/SO/µMAX
MAX982 2% Yes
8-Pin
DIP/SO/µMAX
MAX983 2% Yes
8-Pin
DIP/SO/µMAX
MAX984 2% No 16-Pin DIP/SO
COMPARATORS
PER
PACKAGE
1
2
2
4
1
2
2
4
Ordering Information
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.
PART TEMP RANGE PIN-PACKAGE
MAX971CPA 0°C to +70°C 8 Plastic Dip
MAX971CSA 0°C to +70°C 8 SO
MAX971CUA 0°C to +70°C 8 µMAX
Battery-Powered
Systems
Threshold Detectors
Window Comparators
Level Translators
Oscillator Circuits
MAX971–MAX974/MAX981–MAX984
Ultra-Low-Power, Open-Drain,
Single/Dual-Supply Comparators
2 _______________________________________________________________________________________
V+ to V-, V+ to GND, GND to V-................................-0.3V, +12V
Inputs
Current: IN_+, IN_-, HYST..............................................20mA
Voltage: IN_+, IN_-, HYST ...............(V+ + 0.3V) to (V- - 0.3V)
Outputs
Current: REF...................................................................20mA
OUT_ ................................................................50mA
Voltage: REF ....................................(V+ + 0.3V) to (V- - 0.3V)
OUT_ (MAX9_1/9_4)..................12V to (GND - 0.3V)
(MAX9_2/9_3).......................12V to (V- - 0.3V)
OUT_ Short-Circuit Duration ..................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Bump UCSP (derate 4.7mW/°C above +70°C) ........379mW
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW
16-Pin SO (derate 8.70mW/°C above +70°C) ................696mW
Operating Temperature Ranges
MAX97_C_ _/MAX98_C_ _..................................0°C to +70°C
MAX97_E_ _/MAX98_E_ _ ...............................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Bump Temperature (soldering)
Reflow ..........................................................................+235°C
ELECTRICAL CHARACTERISTICS—5V OPERATION
(V+ = 5V, V- = GND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
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.
ABSOLUTE MAXIMUM RATINGS
PARAMETER CONDITIONS MIN TYP MAX UNITS
POWER REQUIREMENTS
Supply Voltage Range (Note 2) 2.5 11 V
Output Voltage Range 0 11 V
T
A
= +25°C 2.5 3.2
MAX9_1,
HYST = REF
C/E temp ranges 4
T
A
= +25°C 2.5 3.2
MAX972
C/E temp ranges 4
T
A
= +25°C 3.1 4.5
MAX982/
MAX9_3,
HYST = REF
C/E temp ranges 6
T
A
= +25°C 5.5 6.5
Supply Current
IN+ = IN- +
100mV
MAX9_4
C/E temp ranges 8.5
µA
COMPARATOR
Input Offset Voltage V
CM
= 2.5V ±10 mV
Input Leakage Current (IN-, IN+) IN+ = IN- = 2.5V C/E temp ranges ±0.01 ±5 nA
Input Leakage Current (HYST) MAX9_1/MAX982/MAX9_3 ±0.02 nA
Input Common-Mode Voltage
Range
V- V+ - 1.3 V
Common-Mode Rejection Ratio V- to (V+ - 1.3V) 0.1 1.0 mV/V
Power-Supply Rejection Ratio V+ = 2.5V to 11V 0.1 1.0 mV/V
Voltage Noise 100Hz to 100kHz 20 µV
RMS
Hysteresis Input Voltage Range MAX9_1/MAX982/MAX9_3 REF - 0.05 REF V
Overdrive = 10mV 12
Response Time (High-to-Low
Transition)
T
A
= +25°C, 100pF load,
1MΩ pullup to V+
Overdrive = 100mV 4
µs
Response Time (Low-to-High
Transition) (Note 3)
T
A
= +25°C, 100pF load, 1MΩ pullup to V+ 300 µs
MAX971–MAX974/MAX981–MAX984
Ultra-Low-Power, Open-Drain,
Single/Dual-Supply Comparators
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—5V OPERATION (continued)
(V+ = 5V, V- = GND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
ELECTRICAL CHARACTERISTICS—3V OPERATION
(V+ = 3V, V- = GND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
MAX9_2/MAX9_3, I
OUT
= 1.8mA V- + 0.4
Output Low Voltage
MAX9_1/MAX9_4, I
OUT
= 1.8mA
GND
+ 0.4
V
Output Leakage Current V
OUT
= 11V 100 nA
REFERENCE (MAX9_1/MAX982/MAX9_3/MAX9_4 ONLY)
C temp range 1% 1.170 1.182 1.194
MAX971/MAX973/
MAX974
E temp range 2% 1.158 1.206
C temp range 2% 1.158 1.182 1.206
Reference Voltage
MAX981–MAX984
E temp range 3% 1.147 1.217
V
T
A
= +25°C1525
Source Current
C/E temp ranges 6
µA
T
A
= +25°C815
Sink Current
C/E temp ranges 4
µA
Voltage Noise 100Hz to 100kHz 100 µV
RMS
PARAMETER CONDITIONS MIN TYP MAX UNITS
POWER REQUIREMENTS
T
A
= +25°C 2.4 3.0
MAX9_1
C/E temp ranges 3.8
T
A
= +25°C 2.4 3.0
MAX972
C/E temp ranges 3.8
T
A
= +25°C 3.4 4.3
MAX982/
MAX9_3
C/E temp ranges 5.8
T
A
= +25°C 5.2 6.2
Supply Current
HYST = REF,
IN+ = (IN- +
100mV)
MAX9_4
C/E temp ranges 8.0
µA
COMPARATOR
Input Offset Voltage V
CM
= 1.5V ±10 mV
Input Leakage Current (IN-, IN+) IN+ = IN- = 1.5V C/E temp ranges ±0.01 ±5 nA
Input Leakage Current (HYST) MAX9_1/MAX982/MAX9_3 ±0.02 nA
Input Common-Mode Voltage
Range
V- V+ - 1.3 V
Common-Mode Rejection Ratio V- to (V+ - 1.3V) 0.2 1 mV/V
Power-Supply Rejection Ratio V+ = 2.5V to 11V 0.1 1 mV/V
Voltage Noise 100Hz to 100kHz 20 µV
RMS
Hysteresis Input Voltage Range MAX9_1/MAX982/MAX9_3 REF - 0.05 REF V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

MAX973CSA+T

Mfr. #:
Buy MAX973CSA+T
Manufacturer:
Maxim Integrated
Description:
Analog Comparators Dual Comparator / Reference
Lifecycle:
New from this manufacturer.
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