Hyperabrupt Junction Tuning Varactors
SMV1211–SMV1215
Typical Capacitance Values
SMV1211
VR (V) CT (pF)
0.0 162.6
0.5 122.3
1.0
98.6
1.5
80.4
2.0
64.2
2.5
48.2
3.0
34.1
3.5
24.7
4.0
19.4
4.5
16.4
5.0
14.6
5.5
13.3
6.0
12.4
6.5
11.7
7.0
11.2
7.5
10.8
8.0
10.5
SMV1212 SMV1213 SMV1214 SMV1215
CT (pF)
72.4
CT (pF)
30.0
CT (pF)
26.0
CT (pF)
14.8
55.3
22.8
19.6
11.3
44.9
18.1
15.6
9.1
36.9
15.3
12.4
7.5
29.9
12.3
9.6
6.0
22.9
9.2
6.8
4.5
16.3
6.4
4.7
3.1
11.8
4.5
3.5
2.3
9.3
3.5
2.9
1.9
7.9
3.0
2.5
1.7
7.0
2.6
2.3
1.5
6.4
2.4
2.1
1.4
6.0
2.2
2.0
1.3
5.7
2.1
1.9
1.3
5.5
2.0
1.8
1.2
5.3
1.9
1.8
1.2
5.1
1.9
1.7
1.2
SPICE Model
IND
LS
L = LS
RES
RS
R = RS
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
PORT
P_anode
port = 1
CAP
CP
C = CP
PORT
P_Cathode
port = 2
DIODEM
Diode_Model
IS = 1.00e-14
RS = 0
N=1
TT = 0
CJO = CJO
M=M
VJ
EG = 1.11
XTI = 3
KF =0
AF =1
FC = 0.5
BV = 0
IBV = 1e-3
ISR = 0
NR = 2
IKF = 0
NBV = 1
IBVL = 0
NBVL = 1
TBV1 = 0
TNOM = 27
FFE = 1
Part
CJO
VJ
Number (pF)
(V)
M
CP
RS
(pF)
(Ω)
SMV1211 168.00
500
54
0.0
0.4
SMV1212 72.47
110
67
4.5
0.8
SMV1213 28.90
190
105
2.2
1.4
SMV1214 22.74
190
106
1.5
1.7
SMV1215 14.36
190
115
1.1
2.8
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.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
3
Specifications subject to change without notice. 1/01A