Dual RF LDMOS Bias Controllers
with I 2 C/SPI Interface
Typical Operating Characteristics (continued)
(GATEV DD = +5.5V for the MAX1385, GATEV DD = +11V for the MAX1386, AV DD = DV DD = +5V, external V REFADC = +2.5V, external
V REFDAC = +2.5V, C REF = 0.1μF, T A = +25°C, unless otherwise noted.)
INTERNAL REFERENCE
vs. TEMPERATURE
ADC OFFSET ERROR vs. TEMPERATURE
2.509
AV DD = 5V
0.100
AV DD = 5V
0.075
2.504
2.499
2.494
0.050
0.025
0
-0.025
-0.050
2.489
-0.075
2.484
-0.100
-40 -25 -10
5
20
35
50
65
80
-40 -25 -10
5
20
35
50
65
80
0.100
TEMPERATURE ( ° C)
ADC OFFSET ERROR vs. AV DD VOLTAGE
0.05
TEMPERATURE ( ° C)
ADC GAIN ERROR vs. TEMPERATURE
0.075
0.050
0.025
0
-0.025
-0.050
-0.075
-0.100
0.04
0.03
0.02
0.01
0
-0.01
-0.02
-0.03
-0.04
-0.05
AV DD = 5V
4.75
4.85
4.95
5.05
5.15
5.25
-40 -25 -10
5
20
35
50
65
80
0
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
AV DD (V)
INTERNAL TEMPERATURE SENSOR
ERROR vs. TEMPERATURE
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
TEMPERATURE ( ° C)
EXTERNAL TEMPERATURE SENSOR
ERROR vs. TEMPERATURE
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
TEMPERATURE ( ° C)
TEMPERATURE ( ° C)
14
______________________________________________________________________________________
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