Rainbow Electronics DS1870 - Manual (Page 3)

DS1870
LDMOS RF Power-Amplifier Bias
Controller
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ANALOG VOLTAGE-MONITORING CHARACTERISTICS
(V CC = +4.5 to 5.5V, T A = -40°C to +95°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V D Monitor Factory-
Calibrated FS
Code FFF8h 2.488 2.500 2.513 V
V CC Monitor Factory-
Calibrated FS
Code FFF8h 6.521 6.553 6.587 V
I D1 and I D2 Monitor Factory-
Calibrated FS
Code FFF8h 0.4975 0.5000 0.5025 V
Resolution
(V
CC , V D , I D1 , I D2 )
0.0122 %FS
Accuracy
(V
CC , V D , I D1 , I D2 )
0.25 0.5 %FS
Update Rate for
V
CC , V D , I D1 , I D2
t frame 50 ms
DIGITAL THERMOMETER CHARACTERISTICS
(V CC = +4.5 to 5.5V, T A = -40°C to +95°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Thermometer Error T ERR -40°C to 95°C -3 +3 °C
Update Rate t frame 50 ms
ANALOG POTENTIOMETER CHARACTERISTICS
(V CC = +4.5 to 5.5V, T A = -40°C to +95°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Wiper Resistance +25°C 500 1000 Ω
Potentiometer
End-to-End Resistance
R POT +25°C 10.0 13 16.8 k Ω
Resolution 0.4 %FS
Absolute Linearity (Note 3) -1 +1 LSB
Relative Linearity (Note 4) -0.5 +0.5 LSB
Ratiometric Temperature
Coefficient
5 ppm/°C
End-to-End Temperature
Coefficient
70 ppm/°C
-3dB Cutoff Frequency (Note 5) 1 MHz
Series Resistors from L1, L2 to
GND
R S +25°C 15.1 19.5 25.2 k Ω
V HCOM /V LX 0.5975 0.6 0.6025