Datasheet

MAX5723/MAX5724/MAX5725
Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and SPI Interface
15Maxim Integrated
Typical Operating Characteristics (continued)
(MAX5725, 12-bit performance, T
A
= +25°C, unless otherwise noted.)
WATCHDOG TIMER PERIOD HISTOGRAM
MAX5723 toc38
FREQUENCY (Hz)
PERCENT OF POPULATION (%)
4
6
8
10
12
14
0
2
988 990 992 994
996
998
1000 1002
1004
1006
1008
1010
1012 1014
WATCHDOG TIMER FREQUENCY
vs. SUPPLY VOLTAGE
MAX5723 toc39
SUPPLY VOLTAGE (V)
WATCHDOG TIMER FREQUENCY (Hz)
5.14.74.33.93.53.1
980
985
990
995
1000
1005
975
2.7 5.5
WATCHDOG TIMER FREQUENCY
vs. TEMPERATURE
MAX5723 toc40
TEMPERATURE (°C)
WATCHDOG TIMER FREQUENCY (Hz)
1109565 80-10 5 20 35 50-25
920
930
940
950
960
970
980
990
1000
1010
910
-40 125
V
DD
= 3V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX5723 toc37
INPUT LOGIC VOLTAGE (V)
SUPPLY CURRENT (µA)
4321
500
1000
1500
2000
2500
3000
3500
0
05
SCLK, CSB, DIN,
CLR, AND LDAC
SWEPT FROM 0V
TO V
DDIO
AND
V
DDIO
TO 0V
V
DD
= 3V
V
DDIO
= 5V
V
DDIO
= 3V
V
DDIO
= 1.8V
V
REF
DRIFT vs. TEMPERATURE
MAX5723 toc35
TEMPERATURE DRIFT (ppm/°C)
PERCENT OF POPULATION (%)
4.34.14.03.93.73.63.43.33.23.02.9
5
10
15
20
25
0
2.8 4.4
REFERENCE LOAD REGULATION
MAX5723 toc36
REFERENCE OUTPUT CURRENT (µA)
DV
REF
(mV)
45040035030025020015010050
-0.8
-0.6
-0.4
-0.2
0
-1.0
0 500
V
REF
= 2.048V, 2.5V, AND 4.096V
V
DD
= 5V
INTERNAL REFERENCE