INFINEON BB914 User Manual
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Silicon Variable Capacitance Diode
For FM radio tuner with extended
frequency band
High tuning ratio at low supply voltage (car radio)
Monolitic chip (common cathode)
for perfect dual diode tracking
Good linearity for C- V curve
High figure of merit
BB914
3
BB914...
D2
D1
1
2
Type Package Configuration L
(nH) Marking
S
BB914 SOT23 common cathode 1.8 SM
Maximum Ratings at T
= 25°C, unless otherwise specified
A
Parameter Symbol Value Unit
Diode reverse voltage V
Peak reverse voltage
( R
5k )
V
Forward current I
Operating temperature range T
Storage temperature T
R
RM
F
op
stg
18 V
20
50 mA
-55 ... 125
-55 ... 150
°C
1
Dec-04-2002
Electrical Characteristics at TA = 25°C, unless otherwise specified
BB914...
Parameter
DC Characteristics
Reverse current
V
= 16 V
R
= 16 V, TA = 85 °C
V
R
AC Characteristics
Diode capacitance
V
= 2 V, f = 1 MHz
R
V
= 8 V, f = 1 MHz
R
Capacitance ratio
V
= 2 V, VR = 8 V, f = 1 MHz
R
Capacitance matching1)
V
= 2 V, VR = 8 V, f = 1 MHz
R
Series resistance
V
= 2 V, f = 100 MHz
R
Symbol Values Unit
min. typ. max.
I
R
-
-
-
-
20
nA
200
C
T
C
T2/CT8
C
T/CT
r
S
42.5
17.6
43.75
18.7
45
19.75
2.28 2.34 2.42
- - 1.5 %
- 0.28 -
pF
1
For details please refer to Application Note 047.
2
Dec-04-2002
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