ALPHA SMV1269-074 Datasheet

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com 1

Specifications subject to change without notice. 1/01A

Hyperabrupt Junction Tuning Varactor

Features

■ High Capacitance Ratio

■ Ultra Small Size SC-70 Package

■ Designed for High Volume, Low Cost

Battery Applications

■ Available in Tape and Reel Packaging

SMV1269-074

Description

The SMV1269-074 is a dual silicon hyperabrupt junction
varactor diode in a common cathode configuration
specifically designed for battery operation.The specified
high capacitance ratio and low RSof this varactor make it
appropriate for low noise VCOs used at frequencies in
wireless systems to beyond 2.5 GHz.Applications include
low noise and wideband UHF and VHF VCO f or GSM, PCS,
CDMA and analog phones.

Characteristic Value

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

Absolute Maximum Ratings

Parameter Condition Min. Typ. Max. Unit

Reverse Current (IR)V

R

= 8 V 20.0 nA

Capacitance (CT)C

T

@ 0.5 V, VR= 0.5 V, F = 1 MHz 19.2 20.5 21.8 pF

Capacitance (CT)C

T

@ 2.5 V, VR= 2.5 V, F = 1 MHz 6.5 7.3 8.1 pF

Capacitance Ratio (CTR)C

T

(0.5 V)/CT(2.5 V) 2.5 2.8

Series Resistance (RS)V

R

= 1 V, F = 900 MHz 0.6 0.8 Ω

Breakdown V oltage (VBR)I

R

= 10 µA 10.0 V

Electrical Specifications at 25°C

Common Cathode Configuration

DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear

RES
R

S

R = R

S

IND
L

S

L = L

S

CAP
C

P

C = C

P

PORT
P_anode
port = 1

PORT
P_Cathode
port = 2

DIODEM
Diode_Model
I

S

= 1.00e-14

R

S

= 0
N = 1
T

T

= 0

C

JO

= C

JO

M = M
V

J

EG = 1.11
X

TI

= 3
K

F

=0

A

F

=1

F

C

= 0.5

B

V

= 0
I

BV

= 1e-3
I

SR

= 0
N

R

= 2
I

KF

= 0
N

BV

= 1

I

BVL

= 0

N

BVL

= 1

T

BV1

= 0

T

NOM

= 27

F

FE

= 1

SPICE Model

Hyperabrupt Junction Tuning Varactor SMV1269-074

2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com

Specifications subject to change without notice. 1/01A

Alpha Varactor (SMV1269-074)

0

5

10

15

20

25

30

012345

Voltage (V)

Capacitance (pF)

-40 -20 0 20 40 60 80

Temperature (˚C)

Relative Capacitance

Change vs. Temperature

Percent of Variation (%)

-4

-3

-2

-1

0

1

2

3

4

5

V

VAR

= 1 V

V

VAR

= 2.5 V

V

VAR

= 4 V

Typical Performance Data

3

2

1

0.031 (0.80 mm) MIN.

0.039 (1.00 mm) MAX.

0.000 (0.00 mm) MIN.

0.004 (0.10 mm) MAX.

0.010 (0.25 mm) MIN.

0.016 (0.40 mm) MAX.

0.071 (1.80 mm) MIN.

0.087 (2.20 mm) MAX.

0.071 (1.80 mm) MIN.

0.094 (2.40 mm) MAX.

0.045 (1.15 mm) MIN.

0.053 (1.35 mm) MAX.

0.026 (0.65 mm) REF.

0.051 (1.30 mm) REF.

0.004 (0.10 mm) MIN.

0.007 (0.18 mm) MAX.

0.004 (0.10 mm) MIN.

0.012 (0.30 mm) MAX.

0.014 (0.35 mm) REF.

SC-70

Capacitance vs. Voltage

VR (V) CT(pF)

029.0

0.2 25.3

0.4 22.4

0.6 20.1

0.8 18.0

1.0 16.2

1.2 14.6

1.4 13.2

1.6 11.9

1.8 10.7

2.0 9.6

2.2 8.7

2.4 7.8

2.6 7.0

2.8 6.3

3.0 5.7

3.2 5.2

3.4 4.8

3.6 4.4

3.8 4.1

4.0 3.9

4.2 3.7

4.4 3.5

4.6 3.3

4.8 3.2

5.0 3.1

Part C

JO

V

J

M

C

P

R

S

L

S

Number (pF) (V) (pF) (

ΩΩ))

(nH)

SMV1269-074 28.5 6.3 4.2 0.5 0.6 1.4