MA-COM MA4ST350

Low - Voltage / Wide Band Si Hyperabrupt Varactors
MA4ST300
MA4ST300 Series
Low - Voltage / Wide Band
Si Hyperabrupt Varactors
Features
•
•
•
•
•
•
•
•
Configurations
Surface Mount Packages
(SOT-23, SOT-323, SOD-323)
High Capacitance Ratio at Low Voltages
High Q at Low Voltages
SPC Process for Superior C-V Repeatability
Available as Single and Common Cathode Pairs
Tape and Reel Packaging
Designed for Commercial Wireless Applications
TOP VIEW (SOT-23, SOT-323)
Description
The MA4ST300 series are ion-implanted, hyperabrupt junction,
silicon tuning varactors in SOT-23, SOT-323, and SOD-323
surface mount packages. This series of varactors is designed for
high capacitance ratio and low voltage operation. Each varactor
type has a better than 3:1 capacitance ratio between 0.5V and
3.0V.
Single
Pair
TOP VIEW (SOD-323)
Applications
The MA4ST300 series tuning varactors are useful for wide band
tuning and low phase noise applications where the supply voltage
is limited to 5 volts or less. These varactors have been specifically designed to cover wireless application bands up to the 2.4
GHz WLAN band. Applications include VCOs and voltage tuned
filters.
320
330
340
350
-&7
0.25
0.5
0.75
N = 1.1
CJ0=(see table below)
VJ = (see table below)
FC = 0.5
BV = 12.0 V
M = (see table below)
Cj
Cp
&7
605
3'&
*60
,6
107
7$&6
$036
Intrinsic Diode
Model:
Rs
$FWLYH3DJHUV
107
Spice Model
3&6
*36
Package
Parasitics
Ls
Parasitics:
Cp= 0.15 pF
Ls= 1.4 nH
:/$1
'&6
3+3
'(&7
1.0
2.0
FREQUENCY (GHz)
Fig. 1 Typical Device Selection by Frequency
3.0
Part No.
MA4ST320
MA4ST330
MA4ST340
MA4ST350
CJ0 (pF)
77.4
33.9
25.3
15.7
VJ (V)
11.71
8.91
14.25
14.55
M
6.51
5.15
7.41
7.26
V4.00
M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
Low - Voltage / Wide Band Si Hyperabrupt Varactors
MA4ST300
Electrical Specifications @ TA = +25°C
Breakdown Voltage @ IR = 10 µA, Vb = 12 V Minimum
Reverse Leakage Current @ VR = 10, IR = 100 nA Maximum
Part No.
MA4ST320
MA4ST330
MA4ST340
MA4ST350
CT
(pF)
f=1 MHz, VR=0.5V
Nom.
Max.
Min.
48.0
58.0
63.0
22.0
26.0
30.0
15.0
18.5
21.0
9.5
11.8
13.5
CT
(pF)
f=1 MHz, VR=3.0V
Max.
19.0
9.0
6.5
4.5
1
Capacitance Ratio
Q Factor
CT0.5/CT3.0
Typ.
3.2
3.2
3.2
3.2
f=50 MHz, VR= 2.0V
Min.
300
350
350
400
Absolute Maximum Rating
Ordering Information
Parameter
Ratings
Device Current
100 Ma
2, 3
650 mW
Power Dissipation
RF Input Power
+13 dBm
Junction Temperature
200°C
Storage Temperature
-65°C to +200°C
Thermal Resistance: θjc=140°C/W
These varactors are available in the three case styles shown.
When ordering, specify the desired case style by adding the case
designation (287 for SOT-23, 1146 for SOT-323, 1141 for
SOD-323) as a suffix to the model number. For example,
MA4ST330-1141 specifies the MA4ST330 varactor in the
SOD-323 package. The MA4ST320 is available in the SOT-23
and SOD-323 packages only. The model number indicated is
for a single varactor. The MA4ST330, 340 and 350 are available in common cathode pairs in the SOT-23 package, and are
specified by adding “CK” to the end of the model number. For
example MA4ST330CK-287 specifies the MA4ST330 varactor
in common cathode pairs.
Typical Performance Curves
Total Capacitance vs Reverse Voltage at 1 MHz
Nominal Change in Capacitance with Temperature
100
900
M A 4S T 320
TCC(PPM/°C)
Total Capacitance (pF)
M A 4S T 330
M A 4S T 340
10
M A 4S T 350
700
500
300
100
1
0 .1
1
10
R e v e r s e V o lta g e (V )
0
1
2
3
4
5
6
R e v e r s e V o lta g e (V )
Nominal Q at 50 MHz vs Reverse Voltage
1000
Nominal Q
M A 4ST340
M A 4ST350
M A 4ST330
M A 4ST320
100
0 .1
1
10
R e v e r s e V o lt a g e ( V )
V4.00
M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
Low - Voltage / Wide Band Si Hyperabrupt Varactors
MA4ST300
Case Styles
SOT-23 (Case Style 287)
SOT-23 (Case Style 287)
F
N
A
D
B
M
G
K
L
H
E
C
J
DIM.
A
B
C
D
E
F
G
H
J
K
L
DIM.
M
N
SOT-323 (Case Style 1146)
GRADIENT
1
10° max.
2° . . . 30°
MILLIMETERS
MIN.
MAX.

1.22

0.20

1.00
0.35
0.50
0.08
0.15
2.80
3.00
1.20
1.40
0.95 typical
1.90 typical

2.60

0.60
NOTE:
1. Applicable on all sides
SOT-323 (Case Style 1146)
A
H
E
J
10° M A X .
C
INCHES
MIN.
MAX.

0.048

0.008

0.040
0.013
0.020
0.003
0.006
0.110
0.119
0.047
0.056
0.037 typical
0.075 typical

0.103

0.024
B
G
F
D
DIM.
A
B
C
D
E
F
G
H
J
INCHES
MIN.
MAX.
0.063
0.087
0.045
0.053
0.079
0.087
0.047
0.055
0.008
0.016
0.031
0.039

0.004
0.003
0.006
0.004
0.010
MILLIMETERS
MIN.
MAX.
1.6
2.2
1.15
1.35
2.0
2.2
1.2
1.4
0.2
0.4
0.8
1.0

0.1
0.08
0.15
0.1
0.25
SOT-323 (Case Style 1146)
SOT-323 (Case Style 1146)
C
F
E
D
G
H
B
A
DIM.
A
B
C
D
E
F
G
H
INCHES
MIN.
MAX.

0.043

0.004

0.008
0.010
0.016
0.003
0.006
0.063
0.075
0.045
0.057
0.091
0.106
MILLIMETERS
MIN.
MAX.

1.1

0.1

0.2
0.25
0.4
0.08
0.15
1.6
1.9
1.15
1.45
2.3
2.7
V4.00
M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
Low - Voltage / Wide Band Si Hyperabrupt Varactors
MA4ST300
V4.00
M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.