Dual RF LDMOS Bias Controller with
Nonvolatile Memory
Typical Operating Characteristics (continued)
(AV DD = DV DD = 5V, external V REFADC = 2.5V, external V REFDAC = 2.5V, V CS_- = V CS_+ = 32V, C REF = 0.1μF, T A = +25°C, unless oth-
erwise noted.)
INTERNAL REFERENCE VOLTAGE
ADC OFFSET ERROR
2.52
vs. TEMPERATURE
2.0
vs. ANALOG SUPPLY VOLTAGE
4
ADC OFFSET ERROR vs. TEMPERATURE
2.51
2.50
V REFADC
1.5
1.0
3
2
V REFDAC
2.49
2.48
0.5
0
1
0
-50
-25
0
25
50
75
100
125
4.750
4.875
5.000
5.125
5.250
-50
-25
0
25
50
75
100
125
3.0
2.5
TEMPERATURE ( ° C)
ADC GAIN ERROR
vs. ANALOG SUPPLY VOLTAGE
4
3
AV DD (V)
ADC GAIN EROR vs. TEMPERATURE
0.8
0.6
TEMPERATURE ( ° C)
RELATIVE TEMPERATURE
ERROR vs. TEMPERATURE
2.0
1.5
1.0
0.5
0
2
1
0
-1
-2
-3
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
EXTERNAL TEMP
SENSOR
INTERNAL TEMP
SENSOR
4.750
4.875
5.000
5.125
5.250
-50
-25
0
25
50
75
100
125
-40
-11
18
47
76
105
AV DD (V)
TEMPERATURE ( ° C)
TEMPERATURE ( ° C)
12
______________________________________________________________________________________
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