MA46580 & MA46585
Beam Lead Constant Gamma GaAs Tuning Varactor
Rev. V4
Features
•
Constant Gamma = 1.0 & 1.25 available
•
High Q (3000 minimum at 4V 50MHz)
•
Strong Beam Construction
Absolute Maximum Ratings @ T
A
=+25 °C
(Unless Otherwise Noted)
Parameter
1
Absolute Maximum
(Minimum 10 gram beam strength)
•
Low Parasitic Capacitance
•
Close Capacitance tracking
•
Lead-Free (RoHs Compliant) equivalents
available with 260°C reflow compatibility
Reverse Voltage
Operating Temperature
Storage Temperature
Power Dissipation
18V
-65°C to +150°C
-65°C to +200°C
25mW at 25 °C
10 grams minimum
Description
The MA46580 & MA46585 series beam lead con-
stant gamma tuning varactors are hyper-abrupt junc-
tion gallium arsenide diodes with a constant gamma
of 1.0 or 1.25. The high Q values and the elimination
of package parasitics make these varactors very
attractive for voltage controlled oscillators that re-
quire linear tuning. These tuning diodes are useful at
frequencies as high as 40 Ghz.
The beam lead design eliminates almost all of the
package parasitics resulting in improved linearity of
the junction capacitance change with applied re-
verse bias voltage. This improves tracking between
diodes and can improve VCO linearity.
Beam Strength
1. Operation of this device above any one of these parameters
may cause permanent damage.
Applications
These beam lead constant gamma tuning varac-
tors are particularly useful in broadband VCO’s,
where linear frequency tuning is an important
feature. They are also very useful for FM modu-
lating a source for telecommunication transmitter
and in many cases such circuits can be designed
without a linearization circuit.
Electrical Specifications @ T
A
= +25 °C
Gamma = 1.0
2
Electrical Specifications @ T
A
= +25 °C
Gamma = 1.25
2
Gamma4 = 1.13-1.38, VR = 2 - 12 Volts
Breakdown Voltage @ I
R
= 10µA, V
b
= 18 V Min
Reverse Leakage Current @ V
R
=14V, I
R
= 50 nA Max
Total
Capaci-
tance
1
+/-20%
Vr=4V
(pF)
MA46580-1209 1209
0.5
Total
Capaci-
tance
Ratio
Vr=2V
Vr=12V
-
4.5-6.5
Gamma4 = 0.9 - 1.1, VR = 2 - 12 Volts
Breakdown Voltage @ I
R
= 10µA, V
b
= 18 V Min
Reverse Leakage Current @ V
R
=14V, I
R
= 50 nA Max
Total
Capaci-
tance
1
+/-20%
Vr=4V
(pF)
MA46585-1209 1209
Notes:
1. Capacitance is measured at 1 MHz.
2. All junctions are hyperabrupt with nominal
Γ=
1.0 or 1.25
3. Reverse voltage (VB) is measured at 10 microamps.
Case
Style
Part Number
Total
Capaci-
tance
Ratio
Vr=2V
Vr=12V
-
3.2-5.2
Q
Mini-
mum
Vr=4V
f=50MHz
-
3000
Part Number
Case
Style
Q
Mini-
mum
Vr=4V
f=50MHz
-
3000
0.5
1
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA46580 & MA46585
Beam Lead Constant Gamma GaAs Tuning Varactor
Rev. V4
Typical Performance Curves @ 25°C
Capacitance vs. Voltage
Capacitance vs. Voltage
Capacitance Ratio CT2V/CTV
Capacitance Ratio CT2V/CTV
2
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA46580 & MA46585
Beam Lead Constant Gamma GaAs Tuning Varactor
Rev. V4
Environmental Ratings PER MIL-STD-750
Method
Storage Temperature
Temperature Cycle
Shock
Vibration
Constant Acceleration
Humidity
Constant Acceleration
Humidity
1031
1051
2016
2056
2006
1021
2006
1021
Level
See maximum ratings
10 cycles, -65°C to +175°C
500 g’s
15 g’s
20,000 g’s
10 days
20,000 g’s
10 days
Case Styles
ODS-1209
3
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
is considering for development. Performance is based on target specifications, simulated results,
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
and/or prototype measurements. Commitment to develop is not guaranteed.
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Visit www.macomtech.com for additional data sheets and product information.
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
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