GaAs Hyperabrupt Varactor Diode
Gamma = 1.0, 1.25, & 1.5
MA464xx Series
Rev. V10
Features
Case Styles
(Dimensions are available upon request)
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Constant Gamma = 1.0, 1.25 & 1.5
High Q (up to 4000 @ -4 Volts)
More Linear Frequency Tuning
High and Nearly Constant Modulation Sensitivity
Lead-Free (RoHS Compliant) equivalents
available with 260°C reflow compatibility
Typical Coaxial Packages
Applications
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ISM
Description
This series of tuning varactors are hyperabrupt
junction Gallium Arsenide diodes featuring constant
gamma 1.0 (MA4645x, MA4646x series), 1.25
(MA4647x, MA4648x series), & 1.5 (MA4641x,
MA4642x series). These diodes offer high Q (up to
4000) permitting excellent tuning performance from
VHF through Ka band. Each part in this series
exhibits the large change in capacitance versus bias
voltage characteristic of hyperabrupt junctions. The
standard capacitance tolerance is ±10%, with tighter
tolerances available. Capacitance matching at one
or more bias voltages is also available. All diode
types are available in a wide selection of ceramic
packages and in chip form. The constant gamma
value of 1.0, 1.25 & 1.5 available with these diodes
enables the circuit designer to produce significant
improvements in circuit performance. Constant
gamma tuning varactors permit more linear VCO
frequency tuning than do conventional hyperabrupt
tuning varactors. These varactors are particularly
well suited for use in voltage tuned filters, analog
phase shifters, and modulator circuits.
Typical Coplanar Packages
Packaged Tuning Varactor Equivalent Circuit
ODS-134
1
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DC-0007686