ALPHA SMV1763-079 Datasheet

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

Specifications subject to change without notice. 10/99A

Hyperabrupt Junction Tuning Varactor

Features

■ Low Series Resistance

■ High Capacitance Ratio at Low

Reverse Voltage

■ Ultra Small SC-79 Package

■ Designed for High Volume, Low Cost

Battery Applications

■ Available in Tape and Reel Packaging

SMV1763-079

Description

The SMV1763-079 is a silicon hyperabrupt junction varactor
diode specifically designed for 3 V platforms.The specified
high capacitance ratio and low RSof this varactor make it
attractive for low phase noise VCOs in wireless systems up
to and beyond 2.5 GHz. Applications include low noise and
wideband UHF and VHF VCO for 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

Preliminary

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 6.2 6.7 7.2 pF

Capacitance (CT)C

T

@ 2.5 V, VR= 2.5 V, F = 1 MHz 2.3 2.6 2.9 pF

Capacitance Ratio (CTR)C

T

(0.5 V)/CT(2.5 V) 2.3 2.5

Series Resistance (RS)V

R

= 1 V, F = 900 MHz 0.5 0.7 Ω

Breakdown Voltage (VBR)I

R

= 10 µA10.0 V

Electrical Specifications at 25°C

Hyperabrupt Junction Tuning Varactor SMV1763-079

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

Specifications subject to change without notice. 10/99A

Capacitance vs. Voltage

Varactor Voltage (V)

Capacitance (pF)

0

2.0

4.0

6.0

8.0

10.0

012345

Temperature (˚C)

Relative Capacitance

Change vs. Temperature

Percentage of Variation (%)

-4

-3

-2

-1

0

1

2

3

4

5

-40 -20 0 20 40 60 80

V

VAR

= 1 V

V

VAR

= 2.5 V

V

VAR

= 4 V

Typical Performance Data

0.060 (1.50 mm) MIN.

0.067 (1.70 mm) MAX.

0.010

(0.25 mm) MIN.

0.014

(0.35 mm) MAX.

0.043 (1.10 mm) MIN.

0.051 (1.30 mm) MAX.

0.020

(0.50 mm) MIN.

0.028

(0.70 mm) MAX.

0.003

(0.07 mm) MIN.

0.008

(0.20 mm) MAX.

10˚ MAX.

10˚ MAX.

0.028

(0.70 mm) MIN.

0.035

(0.90 mm) MAX.

0.006 (0.15 mm) MIN.

CATHODE

INDICATOR

12

SC-79

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
E

G

= 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

VR(V) CT(pF)

0.0 9.0

0.5 6.7

1.0 5.2

1.5 4.0

2.0 3.2

2.5 2.6

3.0 2.2

3.5 2.0

4.0 1.9

4.5 1.8

5.0 1.8

Part C

J0

V

J

M

C

P

R

S

L

S

Number (pF) (V) (pF) (

ΩΩ))

(nH)

SMV1763-079 8.2 15 9.5 0.67 0.5 0.8

Capacitance vs. Voltage