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Date: 17th Nov 09

 2 GHz to 3GHz up/down converting SiGe mixer for 3G base stations

The new MAX2042 Silicon Germanium (SiGe) passive mixer from analog semiconductor IC expert Maxim operates in the frequency range of 2000MHz to 3000MHz. By adding this new member to its portfolio of SiGe mixers, Maxim broadens the availability of mixer devices for wireless broadband systems such as 3G, LTE, WiMAX, WCS, and MMDS wireless-infrastructure applications. In downconverter configuration mode, this IC delivers 36dBm of IIP3, 23.4dBm of IP1dB, 7.2dB of conversion loss, and a 7.3dB noise figure. In upconverter mode MAX2402 delivers 32.4dBm of IIP3, 67dBc of LO ±2IF suppression, and a conversion loss of 6.8dB.

MAX2042 attenuates 2nd- and 3rd-order spurious signals. MAX2042 is tailored for use in RF frontend part of GHz range wireless base-stations. Lesser the noise generated by the front end RF key components such as LNA, mixers, and oscillators more is the range covered by the wireless transceivers; that's the highlight of this mixer component.

MAX2042 packs double-balanced mixer core with a local oscillator (LO) amplifier, two baluns and other needy discrete components.

The improvements and features listed by Maxim for this product are,
40% space saving on the PC board with reduction in discrete device count. Better elimination of harmonics simplifies filter requirements.

The IF bandwidth is in the range of 50MHz to 500MHz with an 1.8GHz to 3GHz, low-side LO injection range.
The on-board 0dBm drive LO buffer with 0dBm drive offers ±3dB drive-variance control to ensure stable gain, Noise Figure, and IIP3 performance over temperature, supply, and input power variations.
The gain of MAX2042 varies by ±0.44dB over the industrial temperature range of -40°C to +85°C and IIP3 varies ±0.5dB over the same temperature range.

Package: 5mm x 5mm, lead-free, 20-pin TQFN package
Price: Starts at $5.95 for 1k pieces

For more details visit www.maxim-ic.com

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