Hyperabrupt Tuning Varactors

SMV1247–SMV1255

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

Part

Number

(pF)

(V)

(pF)

(

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

Typical Capacitance Values

SPICE Model

SMV1247

SMV1248

SMV1249

SMV1251

SMV1253

SMV1255

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

1. Values extracted from measured performance.

3. For more details refer to the “Varactor SPICE Models for RF VCO

Applications” Application Note.

DIODE

Varactor_Diode

AREA = 1

MODEL = Diode_Model

MODE = nonlinear

RES

IND

CAP

PORT

P_anode

port = 1

PORT

P_Cathode

port = 2

DIODEM

Diode_Model

N = 1

M = M