Communications

Maxim Integrated Products announces 2000MHz to 3000MHz SiGe passive mixer

17th November 2009
ES Admin
Maxim has introduced the MAX2042, the industry's highest performance, fully integrated, 2000MHz to 3000MHz SiGe passive mixer. Designed specifically for LTE, WiMAX, WCS, and MMDS wireless-infrastructure applications, the MAX2042 delivers an unparalleled combination of linearity, noise performance, and component integration. When configured as a downconverter, this IC provides 36dBm of IIP3, 23.4dBm of IP1dB, 7.2dB of conversion loss, and a 7.3dB noise figure. In addition, it exhibits excellent 2nd- and 3rd-order spurious suppression. As an upconverter, the MAX2042 delivers equally impressive performance with 32.4dBm of IIP3, 67dBc of LO ±2IF suppression, and a conversion loss of only 6.8dB. Together, these parameters make the MAX2042 ideal for demanding base-station applications where high linearity and a low noise figure are critical for enhanced receiver and transmitter performance.
As a complete SiGe up-/downconverter, the MAX2042 integrates a state-of-the-art, double-balanced mixer core with an LO amplifier and two baluns, plus dozens of discrete components. This integration reduces the total board space used by the mixer by 40%; it reduces the discrete part count by 33%. The MAX2042's outstanding 2RF-2LO performance of 70dBc (with a -10dBm RF tone) also eases the filtering requirements of close-in harmonics, thus enabling simpler and more cost-effective filter designs.

This mixer offers an exceptionally wide 50MHz to 500MHz IF frequency range with an 1800MHz to 3000MHz, low-side LO injection range. The on-board 0dBm drive LO buffer provides ±3dB drive-variance control, thus ensuring stable gain, NF, and IIP3 performance over temperature, supply, and input power. The MAX2042 has excellent gain-variation performance of ±0.44dB over the -40 degrees Celsius to +85 degrees Celsius industrial temperature range. The IIP3 spread is similarly impressive at ±0.5dB over temperature.

The MAX2042 is packaged in a compact, 5mm x 5mm, lead-free, 20-pin TQFN. The package is pin compatible to the MAX2029/MAX2031/MAX2039/MAX2041/MAX2042A*/MAX2044 series of mixers. This entire family of passive up-/downconverters is ideal for applications in which a common PC-board layout is used for both wireless-infrastructure frequency bands.

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