Owner's manual

MAX921–MAX924
Ultra Low-Power,
Single/Dual-Supply Comparators
4 _______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(V+ = 5V, V- = GND, T
A
= +25°C, unless otherwise noted).
0.0
020
OUTPUT VOLTAGE LOW
vs. LOAD CURRENT
0.5
2.5
MAX921/4-TOC1
LOAD CURRENT (mA)
V
OL
(V)
12
1.5
1.0
48 16
2.0
V+ = 5V
V+ = 3V
1.5
010 30 50
OUTPUT VOLTAGE HIGH vs.
LOAD CURRENT
2.5
4.5
MAX921/924-TOC2
LOAD CURRENT (mA)
V
OH
(V)
20 40
3.5
5.0
2.0
4.0
3.0
V+ = 5V
V+ = 3V
1.155
0 5 15 25
REFERENCE OUTPUT VOLTAGE vs.
OUTPUT LOAD CURRENT
1.165
1.185
MAX921/924-TOC3
OUTPUT LOAD CURRENT (µA)
REFERENCE OUTPUT VOLTAGE (V)
10 20
1.175
1.190
1.160
1.180
1.170
V+ = 5V 
OR
V+ = 3V
30
SINK
SOURCE
ELECTRICAL CHARACTERISTICS: 3V OPERATION (continued)
(V+ = 3V, V- = GND = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Voltage Noise
C/E temp. ranges: I
OUT
= 10mA;
M temp. range: I
OUT
= 6mA
MIN TYP MAX UNITS
100Hz to 100kHz 100 µV
RMS
Input Common-Mode Voltage Range VV- V+ – 1.3
MAX922/
MAX923
T
A
= +25°C, 100pF load
C/E temp. ranges: I
OUT
= 0.8mA;
M temp. range: I
OUT
= 0.6mA
C/E temp. ranges: I
OUT
= 0.8mA;
M temp. range: I
OUT
= 0.6mA
CONDITIONS
Common-Mode Rejection Ratio 0.2 1 mV/V
Power-Supply Rejection Ratio
V- to (V+ – 1.3V)
V+ = 2.5V to 11V
100Hz to 100kHz
0.1 1 mV/V
Voltage Noise
MAX921, MAX923
Overdrive = 10mV
Overdrive = 100mV
20 µV
RMS
Hysteresis Input Voltage Range REF- 0.05V REF V
14
µsResponse Time
5
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
µA
C/E temp. ranges 6
Source Current
M temp. range 4
T
A
= +25°C
GND + 0.4
Output Low Voltage
815
MAX921/
MAX924
µA
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
REFERENCE