Hyperabrupt Junction Tuning Varactor
SMV1263-079
Features
s
High Capacitance Ratio at Low
Reverse Voltage
s
Ultra Small SC-79 Package
s
Designed for High Volume, Low Cost
Battery Applications
s
Available in Tape and Reel Packaging
Description
The SMV1263-079 is a silicon hyperabrupt junction varactor
diode specifically designed for 3 V platforms.The specified
high capacitance ratio and low R
S
of 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.
Absolute Maximum Ratings
Characteristic
Forward Current (I
F
)
Power Dissipation (P
D
)
Storage Temperature (T
ST
)
Operating Temperature (T
OP
)
Value
20 mA
250 mW
-55°C to +150°C
-55°C to +125°C
Electrical Specifications at 25°C
Parameter
Reverse Current (I
R
)
Capacitance (C
T
)
Capacitance (C
T
)
Capacitance Ratio (C
TR
)
Series Resistance (R
S
)
Breakdown Voltage (V
BR
)
V
R
= 15 V
C
T
@ 0.5 V, V
R
= 0.5 V, F = 1 MHz
C
T
@ 2.5 V, V
R
= 2.5 V, F = 1 MHz
C
T
(0.5 V)/C
T
(2.5 V)
V
R
= 1 V, F = 900 MHz
I
R
= 10
µA
20.0
6.2
2.3
2.3
6.7
2.6
2.5
1.2
Ω
V
Condition
Min.
Typ.
Max.
20.0
7.2
2.9
Unit
nA
pF
pF
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 1/01A
1
Hyperabrupt Junction Tuning Varactor
SMV1263-079
Typical Performance Data
9.00
Capacitance vs. Voltage
V
R
(V)
0.00
0.25
C
T
(pF)
8.87
7.68
6.68
5.83
5.11
4.50
3.99
3.54
3.17
2.84
2.57
2.33
2.12
1.94
1.79
1.65
1.54
1.44
1.35
1.27
1.20
Capacitance (pF)
6.00
0.50
0.75
1.00
3.00
1.25
1.50
1.75
0
0
1
2
3
4
5
2.00
2.25
2.50
2.75
3.00
Varactor Voltage (V)
Capacitance vs. Voltage
5
3.25
3.50
V
VAR
= 1 V
V
VAR
= 2.5 V
3.75
4.00
4.25
V
VAR
= 4 V
4.50
4.75
5.00
Percentage of Variation (%)
4
3
2
1
0
-1
-2
-3
-4
-40
-20
0
20
40
60
80
SPICE Model
PORT
P_anode
port = 1
IND
L
S
L = L
S
DIODEM
Diode_Model
I
S
= 1.00e-14
R
S
= 0
N=1
T
T
= 0
C
JO
= C
JO
M=M
V
J
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
Temperature (˚C)
Relative Capacitance
Change vs. Temperature
SC-79
CATHODE 0.006 (0.15 mm) MIN.
INDICATOR
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
1
2
RES
R
S
R = R
S
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
0.028
(0.70 mm) MIN.
0.035
(0.90 mm) MAX.
CAP
C
P
C = C
P
0.060 (1.50 mm) MIN.
0.067 (1.70 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.
10˚ MAX.
PORT
P_Cathode
port = 2
10˚ MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
Part
Number
SMV1263-079
C
J0
(pF)
8.2
V
J
(V)
15
M
9.5
C
P
(pF)
0.67
R
S
Ω
(Ω
)
1.2
L
S
(nH)
1.7
2
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 1/01A
FPGA/CPLD
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