Datasheet

MAX9644/MAX9645/MAX9646
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(V
CC
= 3.3V, V
REF
= 1.8V, R
PULLUP
= 10kΩ to V
PULLUP
= 3.3V for MAX9644/MAX9645, GND = 0, T
A
= +25°C, unless otherwise noted.)
PROPAGATION DELAY AT V
CC
= 3.3V
MAX9644 toc10
100
µ
s/div
0V
0.1V
0.3V
IN+
100mV/div
OUT
2V/div
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX9644 toc11
REFERENCE VOLTAGE (mV)
201.6
202.0
201.8
201.4
201.2
201.0
201.7
201.9
201.5
201.3
201.1
-40 8510 60-15 35
V
CC
= 3.3V
POWER-SUPPLY REJECTION
FOR NO FALSE TRIGGERING
MAX9644 toc14
FREQUENCY (Hz)
TRIP POINT (mV)
100k100
200
206
194
202
196
204
198
10 10k1k 1M
V
CC
= 3.3V + 100mV
P-P
UPPER TRIP POINT
LOWER TRIP POINT
POWER-UP/POWER-DOWN RESPONSE
MAX9644 toc12
1ms/div
0V
0V
V
CC
2V/div
OUT
2V/div
V
IN
= 0.3V
V
CC
= 3.3V
OUTPUT RESPONSE TO
SUPPLY VOLTAGE TRANSIENT
MAX9644 toc13
1ms/div
0V
0V
0V
3V
3.2V
V
CC
200mV/div
OUT
2V/div
OUT
2V/div
OUT
2V/div
V
IN
= V
TH
+ 20mV
V
IN
= V
TH
+ 10mV
V
IN
= V
TH
+ 1mV