Owner's manual

MAX921–MAX924
Ultra Low-Power,
Single/Dual-Supply Comparators
_______________________________________________________________________________________ 3
PARAMETER
Voltage Noise
C/E temp. ranges: I
OUT
= 17mA;
M temp. range: I
OUT
= 10mA
MIN TYP MAX UNITS
100Hz to 100kHz 100 µV
RMS
MAX922/
MAX923
C/E temp. ranges: I
OUT
= 1.8mA;
M temp. range: I
OUT
= 1.2mA
C/E temp. ranges: I
OUT
= 1.8mA;
M temp. range: I
OUT
= 1.2mA
CONDITIONS
C temp. range
VOutput High Voltage
E temp. range
MAX92_
M temp. range
V+ – 0.4
T
A
= +25°C
V- + 0.4
V
15 25
µAC/E temp. ranges 6Source Current
M temp. range 4
T
A
= +25°C
GND + 0.4
Output Low Voltage
815
MAX921/
MAX924
µA
X
C/E temp. ranges 4
Sink Current
1.170 1.182 1.194
V
M temp. range
1.158 1.206Reference Voltage
2
1.147 1.217
ELECTRICAL CHARACTERISTICS: 5V OPERATION (continued)
(V+ = 5V, V- = GND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS: 3V OPERATION
(V+ = 3V, V- = GND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
MAX923
MIN TYP MAX UNITS
MAX924
7.2
5.2 6.2
MAX921
8.0
Supply Current
HYST = REF,
IN+ = (IN- + 100mV)
IN+ = IN- = 1.5V
10.5
µA
2.4 3.0
MAX922
3.8
4.8
2.4 3.0
Input Offset Voltage
CONDITIONS
M temp. range
±10 mV
T
A
= +25°C
C/E temp. ranges
M temp. range
±0.01 ±5
nAInput Leakage Current (IN-, IN+)
±40
Input Leakage Current (HYST)
T
A
= +25°C
C/E temp. ranges
M temp. range
±0.02 nA
T
A
= +25°C
V
CM
= 1.5V
C/E temp. ranges
M temp. range
MAX921, MAX923
C/E temp. ranges
M temp. range
T
A
= +25°C
C/E temp. ranges
3.8
4.8
3.4 4.3
5.8
REFERENCE (MAX921/MAX923/MAX924 ONLY)
POWER REQUIREMENTS
COMPARATOR
Note 1: MAX924 comparators work below 2.5V, see Low-Voltage Operation section for more details.