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SiGe passive mixer tailored for 2.5G/3G apps

Posted: 31 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:maxim integrated products? sige passive mixer? max2039?

Maxim Integrated Products released what it claims as the industry's highest performance, fully integrated, SiGe passive mixer.

Designed specifically for 2.5G/3G wireless-infrastructure applications, the new MAX2039 delivers an unparalleled combination of linearity, noise performance and component integration, according to the company. This single IC provides 34.5dBm of IIP3, 24.4dBm of IP1dB, 7.3dB of noise figure, and a conversion loss of 7.1dB. Additionally, the press release said, the MAX2039 exhibits excellent 2nd- and 3rd-order spurious suppression.

The new SiGe passive mixer is engineered for 1.7GHz to 2.2GHz W-CDMA/UMTS, DCS/PCS/EDGE, cdma2000, and TDMA base-station applications where high linearity and low noise figure are critical for enhanced receiver and transmitter performance. The device offers a 40MHz to 350MHz IF frequency range with a 1.4GHz to 2GHz low-side LO injection range. An LO frequency range of 1.9GHz to 2.4GHz is also supported by the MAX2041, which has been optimized for high-side LO injection.

As a complete SiGe up- and downconverter, Maxim added, the MAX2039 integrates a state-of-the-art double-balanced mixer core with an LO amplifier, two baluns, an LO switch, plus dozens of discrete components. This integration reduces the total board space used by the mixer by a factor of 2.5x, and reduces the discrete part count by 33 percent. The MAX2039's outstanding 2RF-2LO performance can also ease the filtering requirements of close-in harmonics, thus leading to simpler and more cost-effective filter designs, the company said.

Frequency hopping is supported with the integrated SPDT LO switch with switching speeds of

The MAX2039 comes in a 5-by-5mm, 20-pin thin QFN. Lead-free packaging is also available. Prices start at $6.15 (1,000-up, FOB USA).

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