Hyperabrupt Tuning Varactors

SMV1232–SMV1237

Alpha Industries, Inc. [781] 935-5150

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3

Specifications subject to change without notice. 6/99A

Part

M

Number

(pF)

(V)

(pF)

(

Ω

Ω)

SMV1232

4.20

1.7

0.9

0.0

1.50

SMV1233

4.12

1.7

0.9

0.7

1.20

SMV1234

8.75

2.3

1.1

1.2

0.80

SMV1235

16.13

8.0

4.0

2.0

0.60

SMV1236

21.63

8.0

4.2

3.2

0.50

SMV1237

66.16

10.0

5.3

9.0

0.25

Typical Capacitance Values

SPICE Model

SMV1232

SMV1233

SMV1234

SMV1235

SMV1236

SMV1237

0.0

4.15

5.08

9.63

18.22

26.75

71.82

0.5

3.22

3.95

7.53

14.12

20.61

56.10

1.0

2.67

3.28

6.28

11.67

17.02

46.89

1.5

2.28

2.80

5.39

9.91

14.38

40.33

2.0

1.97

2.41

4.68

8.52

12.29

35.13

2.5

1.72

2.09

4.09

7.36

10.56

30.71

3.0

1.51

1.82

3.58

6.40

9.16

26.87

3.5

1.35

1.62

3.15

5.62

8.04

23.57

4.0

1.22

1.45

2.81

4.99

7.19

20.83

4.5

1.13

1.33

2.54

4.50

6.53

18.62

5.0

1.05

1.24

2.32

4.11

6.01

16.87

5.5

0.99

1.16

2.15

3.80

5.61

15.48

6.0

0.94

1.10

2.02

3.55

5.28

14.36

6.5

0.90

1.05

1.90

3.34

5.02

13.46

7.0

0.86

1.01

1.80

3.17

4.81

12.72

7.5

0.84

0.98

1.72

3.03

4.64

12.11

8.0

0.81

0.96

1.65

2.91

4.49

11.61

9.0

0.78

0.92

1.55

2.73

4.28

10.87

10.0

0.76

0.90

1.47

2.61

4.13

10.38

11.0

0.75

0.88

1.42

2.53

4.02

10.06

12.0

0.74

0.87

1.38

2.47

3.95

9.84

13.0

0.73

0.86

1.35

2.43

3.89

9.68

14.0

0.73

0.85

1.33

2.40

3.84

9.56

15.0

0.72

0.84

1.32

2.38

3.80

9.47

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

1. Values extracted from measured performance.

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

Applications” Application Note.