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HMC258

Sub-Harmonic Mixer Chip, 14 - 21 GHz

Product Details

Data Sheet
Application Notes
S-Parameters
ECCN: EAR99

Quality & Reliability

Qualification Test Reports
Waffle-Pak & Gel-Pak

Press & Media
RF Freq. (GHz) Function IF Freq. (GHz) Conv. Gain (dB) LO/RF Isol. (dB) IIP3 (dBm) Package
14 - 21 Sub-Harmonic DC - 3 -10 40 7 Chip

Features

• Integrated LO Amplifier: 0 dBm Drive
• Sub-Harmonically Pumped (x2) LO
• High 2LO/RF Isolation: 40 dB
• Die Size: 0.85 x 1.15 x 0.1 mm

Typical Applications

• Microwave Point-to-Point Radios
• VSAT
• SATCOM

Functional Diagram


HMC258 Functional Diagram

General Description

The HMC258 chip is a compact sub-harmonically pumped (x2) single ended MMIC mixer with an integrated LO amplifier which can be used as an upconverter or downconverter. The chip utilizes a GaAs MESFET technology that results in a small overall chip area of 0.9mm². The 2LO to RF isolation is excellent eliminating the need for additional filtering.

The LO amplifier is a single bias (+5V) two stage design with only 0dBm drive requirement. A less stringent oscillator design is made possible by the low LO drive and sub-harmonic nature of the chip. All data is with the chip in a 50 ohm test fixture connected via 0.025mm (1 mil) diameter wire bonds of minimal length <0.31 mm (<12 mils).