ALPHA SMV1247-079

Hyperabrupt Tuning Varactors
SMV1247–SMV1255
Features
■ High Capacitance Ratio,
C0.3 V/C4.7 V = 12 Typ.
■ Multiple Packages SOT-23, SOD-323,
SC-70 and SC-79
■ Designed for High Volume Commercial
Applications
■ SPICE Models are Available
Description
Absolute Maximum Ratings
The SMV1247–SMV1255 series of silicon hyperabrupt
junction varactor diodes are designed for use in VCOs with
low tuning voltage operation. This family of varactors is
characterized for capacitance and resistance over
temperature. SPICE models are provided.
Characteristic
Value
Reverse Voltage (VR)
15 V
Forward Current (IF)
20 mA
Power Dissipation (PD)
250 mW
Storage Temperature (TST)
-55°C to +150°C
Operating Temperature (TOP)
-55°C to +125°C
Single
Single
Single
Common Anode
Common Cathode
Common Anode
SC-79
SOD-323
SOT-23
SOT-23
SOT-23
SC-70
♦ SMV1247-079
Common Cathode
SC-70
♦ SMV1247-074
♦ SMV1248-001
♦ SMV1249-079
♦ SMV1249-011
♦ SMV1249-001
♦ SMV1251-079
♦ SMV1251-011
♦ SMV1251-001
♦ SMV1249-003
♦ SMV1249-073
♦ SMV1251-004
♦ SMV1253-079
♦ SMV1251-074
♦ SMV1253-004
♦ SMV1255-079
♦ SMV1255-011
♦ SMV1255-001
♦ SMV1255-003
♦ SMV1255-004
♦ SMV1255-073
LS = 0.7 nH
LS = 1.5 nH
LS = 1.5 nH
LS = 1.5 nH
LS = 1.5 nH
LS = 1.4 nH
LS = 1.4 nH
♦ Available through distribution.
For other packages or configurations, please contact the factory.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com
Specifications subject to change without notice. 1/00A
1
Hyperabrupt Tuning Varactors
SMV1247–SMV1255
Electrical Specifications at 25°C
CT
@ 0.3 V
(pF)
Part
Number
CT
@ 4.7 V
(pF)
CT
@ 1V
(pF)
CT
@ 3V
(pF)
CT @ 0.3 V
CT @ 4.7 V
(Ratio)
C T @ 1 V RS @ 3 V
CT @ 3 V 500 MHz
Ω)
(Ratio)
(Ω
Q
@ 3V
50 MHz
Min.
Typ.
Typ.
Max.
Typ.
Typ.
Min.
Typ.
Typ.
Max.
Typ.
SMV1247
6.5
7
0.7
0.78
4.4
0.95
9.5
10.0
4.6
2.0
1500
SMV1248
15.0
17
1.5
1.70
12.3
2.60
10.8
12.0
4.7
1.8
700
SMV1249
28.0
31
2.6
2.80
18.2
3.40
11.0
12.1
5.3
1.5
600
SMV1251
38.0
42
3.4
3.80
28.1
5.80
11.0
12.2
4.8
1.3
400
SMV1253
48.0
53
4.3
4.80
37.0
7.80
11.0
12.3
4.7
1.2
350
SMV1255
58.0
64
5.2
5.80
43.3
8.50
11.0
12.3
5.1
1.0
350
Reverse Voltage VR (IR = 10 µA): 15 V
Reverse Current IR (VR = 12 V): 20 nA
Typical Performance Data
4.0
100.0
SMV1255
3.5
SMV1247
SMV1251
3.0
SMV1248
SMV1249
2.5
10.0
RS (Ω)
Capacitance (pF)
SMV1253
1.0
SMV1249
SMV1251
2.0
1.5
1.0
SMV1248
SMV1253
0.5
SMV1247
0.1
0
4.0
2.0
6.0
8.0
0
2
3
4
5
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
Series Resistance vs. Reverse Voltage
@ 500 MHz
15
2
Percentage Change (%)
Percentage Change (%)
1
Reverse Voltage (V)
3
VR = 1 V
1
0
-1
-2
VR = 4 V
10
5
0
-5
-10
-15
-20
-25
-3
-40
2
SMV1255
0
-20
0
20
40
60
80
-50
-25
0
25
50
75
100
Temperature (˚C)
Temperature (˚C)
Relative Capacitance Change
vs. Temperature
Relative Series Resistance Change
vs. Temperature @ 500 MHz
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com
Specifications subject to change without notice. 1/00A
Hyperabrupt Tuning Varactors
SMV1247–SMV1255
Typical Capacitance Values
SMV1247
SMV1248
SMV1249
SMV1251
SMV1253
SMV1255
VR (V)
CT (pF)
CT (pF)
CT (pF)
CT (pF)
CT (pF)
CT (pF)
0.0
8.86
22.62
37.35
53.65
69.32
81.21
0.5
6.17
16.32
25.88
38.23
50.23
58.28
1.0
4.37
12.33
18.18
28.09
37.07
43.27
1.5
2.96
9.12
12.08
20.13
27.57
31.49
2.0
1.88
6.27
7.27
13.55
19.37
21.50
2.5
1.22
3.93
4.44
8.60
12.39
13.40
3.0
0.95
2.57
3.40
5.78
7.77
8.51
3.5
0.83
1.95
2.96
4.57
5.77
6.51
4.0
0.77
1.71
2.72
3.95
4.86
5.58
4.5
0.73
1.59
2.51
3.58
4.34
5.07
5.0
0.70
1.49
2.38
3.33
4.01
4.76
5.5
0.68
1.44
2.30
3.16
3.78
4.58
6.0
0.67
1.40
2.24
3.03
3.62
4.46
6.5
0.66
1.36
2.19
2.94
3.50
4.39
7.0
0.65
1.33
2.14
2.88
3.41
4.33
7.5
0.64
1.31
2.09
2.83
3.34
4.29
8.0
0.64
1.30
2.03
2.79
3.28
4.26
SPICE Model
Part
Number
PORT
P_anode
port = 1
IND
LS
L = LS
RES
RS
R = RS
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
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
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
CJO
(pF)
VJ
(V)
M
CP
(pF)
RS
Ω)
(Ω
SMV1247
9.22
13
10.5
0
2.0
SMV1248
21.54
17
14.0
0
1.8
SMV1249
39.00
17
14.0
0
1.5
SMV1250
47.00
17
14.0
0
1.5
SMV1251
60.00
17
14.0
0
1.3
SMV1253
70.00
17
14.0
0
1.2
SMV1255
82.00
17
14.0
0
1.0
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 [email protected] • www.alphaind.com
Specifications subject to change without notice. 1/00A
3
Hyperabrupt Tuning Varactors
SMV1247–SMV1255
SOT-23
SC-70
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
0.071 (1.80 mm) MIN.
0.087 (2.20 mm) MAX.
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
0.010 (0.25 mm) MIN.
0.016 (0.40 mm) MAX.
3
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
2
1
3
0.071 (1.80 mm) MIN.
0.094 (2.40 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
1
0.037 (0.95 mm) REF.
0.020 (0.51 mm) REF.
2
0.014 (0.35 mm) REF.
0.026 (0.65 mm) REF.
0.076 (1.92 mm) REF.
0.051 (1.30 mm) REF.
0.035 (0.89 mm) MIN.
0.044 (1.12 mm) MAX.
0.003 (0.080 mm) MIN.
0.008 (0.20 mm) MAX.
0.004 (0.10 mm) MIN.
0.007 (0.18 mm) MAX.
0.031 (0.80 mm) MIN.
0.039 (1.00 mm) MAX.
8˚ MAX.
0.0005 (0.01 mm) MIN.
0.004 (0.10 mm) MAX.
0.022 (0.55 mm) REF.
SOD-323
0.004 (0.10 mm) MIN.
0.012 (0.30 mm) MAX.
0.000 (0.00 mm) MIN.
0.004 (0.10 mm) MAX.
SC-79
0.090 (2.30 mm) MIN.
0.108 (2.74 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX. 1
0.010
(0.25 mm) MIN.
0.016
(0.40 mm) MAX.
2
CATHODE
INDICATOR
CATHODE 0.006 (0.15 mm) MIN.
INDICATOR
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
0.063 (1.60 mm) MIN.
0.071 (1.80 mm) MAX.
0.028
(0.70 mm) MIN.
0.035
(0.90 mm) MAX.
0.043 (1.10 mm) MIN.
0.051 (1.30 mm) MAX.
0.050
(1.25 mm) MAX.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
2
0.060 (1.50 mm) MIN.
0.067 (1.70 mm) MAX.
0.008 (0.20 mm) NOM.
0.006
(0.15 mm) TYP.
1
0.020
(0.50 mm) MIN.
0.028
(0.70 mm) MAX.
10˚ MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
10˚ MAX.
4
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com
Specifications subject to change without notice. 1/00A