BB844 ,VaractordiodesBB844Silicon Variable Capacitance Diode
BB844
Varactordiodes
BB844
Silicon Variable Capacitance Diode For FM radio tuner with extended frequency band
77MHz to 108MHz Designed for application requiring back-to-back
diode configuration for optimum signal distortion
and detuning High tuning ratio at low supply voltage (car radio) Monolitic chip (common cathode) for perfect
dual diode tracking Good C- V linearity High figure of merit
BB844
Maximum Ratings at TA = 25°C, unless otherwise specified
BB844
Electrical Characteristics at TA = 25°C, unless otherwise specified
DC Characteristics
AC Characteristics1For details please refer to Application Note 047.
BB844
Diode capacitance CT = (VR)
f = 1MHz
10 2
10
20
30
40
50
60
70
90
Capacitance ratio CTref/CT = (VR)
f = 1MHz
0.5
1.5
2.5
3.5
Tref
Temperature coefficient of the diode
capacitance TCc = (VR)
0.0002
0.00025
0.0003
0.00035
0.0004
0.00045
0.0005
0.0006
:
www.ic-phoenix.com
.
