Hyperabrupt Tuning Varactors
SMV1247–SMV1255
Typical Capacitance Values
SMV1247
SMV1248
(pF)
SMV1249
(pF)
SMV1251
(pF)
SMV1253
(pF)
SMV1255
(pF)
V
(V)
C
(pF)
C
C
C
C
C
T
R
T
T
T
T
T
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
8.86
6.17
4.37
2.96
1.88
1.22
0.95
0.83
0.77
0.73
0.70
0.68
0.67
0.66
0.65
0.64
0.64
22.62
16.32
12.33
9.12
6.27
3.93
2.57
1.95
1.71
1.59
1.49
1.44
1.40
1.36
1.33
1.31
1.30
37.35
25.88
18.18
12.08
7.27
4.44
3.40
2.96
2.72
2.51
2.38
2.30
2.24
2.19
2.14
2.09
2.03
53.65
38.23
28.09
20.13
13.55
8.60
5.78
4.57
3.95
3.58
3.33
3.16
3.03
2.94
2.88
2.83
2.79
69.32
50.23
37.07
27.57
19.37
12.39
7.77
81.21
58.28
43.27
31.49
21.50
13.40
8.51
5.77
6.51
4.86
5.58
4.34
5.07
4.01
4.76
3.78
4.58
3.62
4.46
3.50
4.39
3.41
4.33
3.34
4.29
3.28
4.26
SPICE Model
Part
Number
C
(pF)
V
M
C
(pF)
R
S
JO
J
P
(V)
13
17
17
17
17
17
17
(Ω)
2.0
1.8
1.5
1.5
1.3
1.2
1.0
PORT
P_anode
port = 1
SMV1247
SMV1248
SMV1249
SMV1250
SMV1251
SMV1253
SMV1255
9.22
10.5
0
21.54
39.00
47.00
60.00
70.00
82.00
14.0
14.0
14.0
14.0
14.0
14.0
0
IND
LS
L = LS
DIODEM
Diode_Model
IS = 1.00e-14
RS = 0
N = 1
TT = 0
CJO = CJO
M = M
EG = 1.11
XTI = 3
KF =0
AF =1
FC = 0.5
BV = 0
IBV = 1e-3
ISR = 0
NR = 2
IKF = 0
0
0
0
0
0
RES
RS
R = RS
1. Values extracted from measured performance.
2. For package inductance (LS) refer to package type.
3. For more details refer to the “Varactor SPICE Models for RF VCO
Applications” Application Note.
CAP
CP
C = CP
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
NBV = 1
IBVL = 0
NBVL = 1
TBV1 = 0
TNOM = 27
FFE = 1
PORT
P_Cathode
port = 2
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
3
Specifications subject to change without notice. 1/00A
ALPHA [ ALPHA INDUSTRIES ]
