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RF/Microwave??

Maxim active mixer reduces component count

Posted: 11 Oct 2002 ?? ?Print Version ?Bookmark and Share

Keywords:maxim integrated products? max9982? sige active mixer? mixer ic?

Maxim Integrated Products has introduced the MAX9982 SiGe active mixer that provides 2dB conversion gain, 12dB NF, and 26.8dBm of IIP3 performance, while replacing two amplifiers, two baluns, an LO switch, and other discrete components in cellular wireless infrastructure applications.

The 5-by-5mm 20-pin QFN device integrates an LO switch, LO buffer, and on-chip baluns and is claimed to provide a more ESD-reliable solution than similar GaAs devices. It suits GSM900, cdma2000, TDMA, and iDEN base station applications that require high linearity and low noise figure for receiver designs.

The MAX9982 also supports GSM frequency hopping with the integrated LO switch, while a switching speed of <250ns is supported with >50dB of LO-to-LO isolation. The on-board LO buffer provides 15dB drive variance control and yields stable G, NF, and IIP3 performance over temperature, supply, and input power.

The device has a gain spread of 10.6dB from nominal at room, and -0.0135dB/0C over temperature. IIP3 spread is at 10.5dB over temperature.

Prices start at $7.90 (1000-up).





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