MA46472-134

Overview

The MA46472-134 is a Gallium Arsenide (GaAs) hyperabrupt junction tuning varactor diode from the MA464xx series, designed for VHF through Ka band applications. It features a constant gamma value of 1.25, enabling more linear voltage-controlled oscillator frequency tuning compared to conventional hyperabrupt varactors. The device offers high quality factors and nearly constant modulation sensitivity. Electrical specifications at +25°C include a total capacitance of 1.0 pF ±10% at VR = 4 V and f = 1 MHz, a minimum capacitance ratio of 4.8 measured between 2 V and 20 V reverse bias, and a minimum Q factor of 3000 at VR = 4 V and f = 50 MHz.

Feature Summary

• Constant gamma value of 1.25 provides improved linearity for voltage-controlled oscillator frequency tuning.
• High quality factor performance up to 4000 permits excellent tuning characteristics across VHF to Ka band frequencies.
• Hyperabrupt junction design delivers large capacitance changes versus bias voltage with high and nearly constant modulation sensitivity.

Applications

• Voltage tuned filters
• Analog phase shifters
• Modulator circuits

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number against official MACOM documentation. Confirm that the specific ordering suffix matches the required package style, as the datasheet indicates availability in various ceramic packages and chip forms. Ensure compliance with RoHS standards if lead-free equivalents are specified for the production environment.

Selection Notes

Select this component based on the required constant gamma value of 1.25 for linear tuning applications. Verify that the 1.0 pF nominal capacitance fits the circuit design requirements at the operating bias point. Check that the minimum Q factor of 3000 meets the system's loss constraints. Consider package parasitics when designing for higher frequency ranges within the VHF to Ka band spectrum.

Part Context

This component belongs to the MA464xx series of GaAs hyperabrupt varactor diodes manufactured by MACOM Technology Solutions. The series includes variants with constant gamma values of 1.0, 1.25, and 1.5 to suit different circuit linearity requirements. These devices are engineered for high-performance RF and microwave tuning applications where stable capacitance-voltage characteristics are critical.

Replacement Considerations

Direct replacements must match the 1.25 constant gamma specification and similar electrical parameters. Other parts within the MA464xx series with different gamma values will alter tuning linearity. Verify package compatibility and parasitic elements before substitution.