Hyperabrupt Tuning Varactors
SMV1232–SMV1237
Typical Capacitance Values
SMV1232
V
R
(V)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
C
T
(pF)
4.15
3.22
2.67
2.28
1.97
1.72
1.51
1.35
1.22
1.13
1.05
0.99
0.94
0.90
0.86
0.84
0.81
0.78
0.76
0.75
0.74
0.73
0.73
0.72
SMV1233
C
T
(pF)
5.08
3.95
3.28
2.80
2.41
2.09
1.82
1.62
1.45
1.33
1.24
1.16
1.10
1.05
1.01
0.98
0.96
0.92
0.90
0.88
0.87
0.86
0.85
0.84
SMV1234
C
T
(pF)
9.63
7.53
6.28
5.39
4.68
4.09
3.58
3.15
2.81
2.54
2.32
2.15
2.02
1.90
1.80
1.72
1.65
1.55
1.47
1.42
1.38
1.35
1.33
1.32
SMV1235
C
T
(pF)
18.22
14.12
11.67
9.91
8.52
7.36
6.40
5.62
4.99
4.50
4.11
3.80
3.55
3.34
3.17
3.03
2.91
2.73
2.61
2.53
2.47
2.43
2.40
2.38
SMV1236
C
T
(pF)
26.75
20.61
17.02
14.38
12.29
10.56
9.16
8.04
7.19
6.53
6.01
5.61
5.28
5.02
4.81
4.64
4.49
4.28
4.13
4.02
3.95
3.89
3.84
3.80
SMV1237
C
T
(pF)
71.82
56.10
46.89
40.33
35.13
30.71
26.87
23.57
20.83
18.62
16.87
15.48
14.36
13.46
12.72
12.11
11.61
10.87
10.38
10.06
9.84
9.68
9.56
9.47
SPICE Model
PORT
P_anode
port = 1
IND
L
S
L = L
S
DIODEM
Diode_Model
I
S
= 1.00e-14
R
S
= 0
N=1
T
T
= 0
C
JO
= C
JO
M=M
E
G
= 1.11
X
TI
= 3
K
F
=0
A
F
=1
F
C
= 0.5
B
V
= 0
I
BV
= 1e-3
I
SR
= 0
N
R
= 2
I
KF
= 0
N
BV
= 1
I
BVL
= 0
N
BVL
= 1
T
BV1
= 0
T
NOM
= 27
F
FE
= 1
Part
Number
SMV1232
SMV1233
SMV1234
SMV1235
SMV1236
SMV1237
C
JO
(pF)
4.20
4.12
8.75
16.13
21.63
66.16
V
J
(V)
1.7
1.7
2.3
8.0
8.0
10.0
M
0.9
0.9
1.1
4.0
4.2
5.3
C
P
(pF)
0.0
0.7
1.2
2.0
3.2
9.0
R
S
Ω
(Ω)
1.50
1.20
0.80
0.60
0.50
0.25
RES
R
S
R = R
S
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
CAP
C
P
C = C
P
1. Values extracted from measured performance.
2. For package inductance (L
S
) refer to package type.
3. For more details refer to the “Varactor SPICE Models for RF VCO
Applications” Application Note.
PORT
P_Cathode
port = 2
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 6/99A
3
ALPHA [ ALPHA INDUSTRIES ]
