20 May 2013

MACOM Tech launches solderable flip-chip low-capacitance GaAs Schottky, AlGaAs PIN diode and high-Q-constant gamma GaAs varactor

M/A-COM Technology Solutions Inc of Lowell, MA, USA (which makes analog semiconductors, components and subassemblies for RF, microwave and millimeter-wave applications) has launched three broadband solderable flip-chip devices, namely a Schottky diode, a general-purpose amplifier and a general-purpose varactor diode, for multi-market applications including for police radar, point-to-point, electronic warfare and aerospace & defense applications. Designed to be versatile, low-cost and ultra-small, the package-less devices have contacts that allow for standard solder reflow manufacturing processes.

The MADS-001317-1500 Schottky has a high cutoff frequency, allowing use through millimeter-wave frequencies. Its performance makes it suitable for single and double balanced mixers in PCN transceivers and radios, police radar detectors, and automotive radar detectors. Fabricated using a gallium arsenide (GaAs) process that features full passivation for increased performance and reliability, the low parasitic capacitance and inductance allow operation up to 80GHz. “Due to wafer scale reduction, the device minimizes unwanted parasitic and allows for exceptional performance beyond 80GHz,” says product manager Paul Wade. 

The MADP-000907-14020 PIN diode - unlike its nearest alternatives - is fabricated using an AlGaAs process that provides full passivation for increased performance and reliability, the firm says. “The MADP-000907-14020 is a high-frequency [70GHz] AlGaAs PIN diode well suited for operation at millimeter-wave frequencies for RF switches and phase-shifter applications,” says Wade. “The low capacitance [0.025pF] makes it ideal for use in many microwave multi-throw switch assemblies, where the series capacitance of each ‘off’ port adversely loads the input and affects VSWR,” he adds.

The MAVR-000120-1411 varactor - unlike its nearest alternatives - is fabricated using a GaAs process that likewise provides full passivation for increased performance and reliability, the firm says. The constant gamma (0.9-1.1) varactor is designed for tuning capacitance in the 2-12V range. The low parasitic capacitance and inductance allow for operation up to 30GHz. “This flip-chip is a high-frequency GaAs varactor suitable for VCO [voltage-controlled oscillator] applications where high-Q operation is critical to design performance,” says Wade. The Q-factor of the device is 3000 (minimum).

Production quantities and samples of the MADS-001317-1500, MADP-000907-14020 and MAVR-000120-1411 are available from stock.

Tags: M/A-COM

Visit: www.macomtech.com