DS1870 Datasheet, PDF (6/28 Pages) Maxim Integrated Products – LDMOS RF Power-Amplifier Bias Controller

LDMOS RF Power-Amplifier Bias
Controller
(V_CC = +5.0V, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
SUPPLY CURRENT vs. SUPPLY VOLTAGE
800
780
760
740
720
700
680
660
640
620
600
4.5 4.7 4.9 5.1 5.3 5.5
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. TEMPERATURE
900
850
800
V_CC = 5.5V
750
700
650
V_CC = 5.0V
600
550
V_CC = 4.5V
500
450
400
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
H_COM CURRENT vs. H_COM VOLTAGE
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
4.5 4.7 4.9 5.1 5.3 5.5
H_COM VOLTAGE (V)
POTENTIOMETER 1 AND 2 OUTPUT VOLTAGE
vs. POSITON
6
5
4
3
H_COM = 5V
2
L1 AND L2
NOT CONNECTED
1
0
0
64
128
192
256
WIPER POSITION (DEC)
POTENTIOMETER 1 INTEGRAL
NONLINEARITY vs. WIPER POSITION
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
64
128
192
256
WIPER POSITION (DEC)
POTENTIOMETER 1 DIFFERENTIAL
NONLINEARITY vs. WIPER POSITION
0.25
0.20
0.15
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
-0.25
0
64
128
192
256
WIPER POSITION (DEC)
POTENTIOMETER 2 INTEGRAL
NONLINEARITY vs. WIPER POSITION
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
64
128
192
256
WIPER POSITION (DEC)
POTENTIOMETER 2 DIFFERENTIAL
NONLINEARITY vs. WIPER POSITION
0.25
0.20
0.15
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
-0.25
0
64
128
192
256
WIPER POSITION (DEC)
POTENTIOMETER 1 AND 2
WIPER RESISTANCE vs. WIPER VOLTAGE
1000
900
800
700
600
500
400
300
200
100
H_COM = 5.0V
0
0
1
2
3
4
5
WIPER VOLTAGE (V)
6 _____________________________________________________________________