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Downconverting mixer debuts for WCS, LTE, WiMAX, and MMDS base stations

Sunnyvale, Calif.—Maxim Integrated Products has introduced the MAX19996A, a fully integrated, 2000MHz to 3900MHz downconverting mixer with an on-chip LO buffer.

Designed using Maxim's proprietary, monolithic SiGe BiCMOS process, the MAX19996A combines linearity, noise performance, and component integration over a wide band of operation. The MAX19996A provides a fully integrated downconversion channel, with +24.5dBm (typ) IIP3, 8.7dB (typ) conversion gain, and 9.8dB (typ) noise figure. Additionally, it features a 2LO-2RF spurious rejection of 67dBc for an RF level of -10dBm, and 62dBc for a level of -5dBm. The MAX19996A is designed specifically for 3G/4G wireless-infrastructure applications in which high linearity and a low noise figure are critical for enhanced receiver sensitivity and blocker immunity.

This device supports both high- and low-side LO injection architectures for 2.3GHz to 2.9GHz WCS, LTE, WiMAX, and MMDS base stations; in addition, the MAX19996A can be configured for 3.1GHz to 3.9GHz WiMAX and LTE low-side injection architectures as well.

As a complete SiGe downconverter, the MAX19996A integrates a state-of-the-art mixer core, two amplifiers, two baluns, and dozens of discrete components. This device's 8.7dB conversion gain enables the elimination of a complete IF amplifier stage within the receiver lineup. The MAX19996A's 2LO-2RF performance can also ease the filtering requirements of close-in harmonics. Through this combination of integration and performance, the MAX19996A reduces downconverter solution size by a factor of 2x, and the discrete part count by 34%, according to Maxim.

The MAX19996A is packaged in a compact, 5mm x 5mm, 20-pin TQFN that is pin compatible with the MAX19996 (a 2000MHz to 3000MHz single mixer).

Pricing: Starts at $6.90 (1000-up, FOB USA).
Availability: Now.
Datasheet: click here.

Maxim Integrated Products, www.maxim.com

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