RoHs Compliant
Beam Lead Constant Gamma
GaAs Tuning Varactor
Features
•
Constant Gamma = 1.0 & 1.25 available
•
High Q (3000 minimum at 4V 50MHz)
•
Strong Beam Construction
(Minimum 10 gram beam strength)
•
Low Parasitic Capacitance
•
Close Capacitance tracking
•
Lead-Free (RoHs Compliant) equivalents avail-
able with 260°C reflow compatibility.
MA46580 & MA46585
V3
Absolute Maximum Ratings @ T
A
=+25 °C
(Unless Otherwise Noted)
Parameter
Reverse Voltage
Operating Temperature
Storage Temperature
Power Dissipation
1
Absolute Maximum
18V
-65°C to +150°C
-65°C to +200°C
25mW at 25 °C
10 grams minimum
Description
The MA46580,MA46585 and MA46H130 series of
beam lead constant gamma tuning varactors are
hyperabrupt junction 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 require 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 varactors
are particularly useful in broadband VCO’s, where
linear frequency tuning is an important feature.
They are also very useful for FM modulating 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
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
Minimum
Vr=4V
f=50MHz
-
3000
Part Number
Case
Style
Q
Minimum
Vr=4V
f=50MHz
-
3000
1209
0.5
1
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
RoHs Compliant
Beam Lead Constant Gamma
GaAs Tuning Varactor
Typical Performance Curves
CAPACITANCE vs. VOLTAGE
GAMMA =1.25 +/-10% FROM 2-12V0lts
CAPACITANCE vs. VOLTAGE
GAMMA =1.00 +/-10% FROM 2-12V0lts
MA46580 & MA46585
V3
CAPACITANCE RATIO CT2V/CTV
CAPACITANCE RATIO CT2V/CTV
2
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
RoHs Compliant
Beam Lead Constant Gamma
GaAs Tuning Varactor
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
MA46580 & MA46585
V3
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
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
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