Maxim Integrated Products has introduced the MAX19996, a fully integrated, 2000MHz to 3000MHz, downconverting mixer with an on-chip LO buffer. Designed using Maxim's proprietary, monolithic SiGe process, this device delivers an unparalleled combination of linearity, noise performance, and component integration. This single IC provides a fully integrated downconversion channel with +24.5dBm (typ) IIP3, 8.7dB (typ) conversion gain, and 9.6dB (typ) noise figure. Additionally, the MAX19996 offers an industry-best 2RF-2LO spurious rejection of 69dBc for an RF level of -10dBm, and 64dBc for a level of -5dBm. The MAX19996 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. It is ideal for 2.3GHz to 2.8GHz WCS, LTE, WiMAX(TM), and MMDS base stations.
As a complete SiGe downconverter, the MAX19996 integrates a state-of-the-art mixer core, two amplifiers, two baluns, and dozens of discrete components. The device's 8.7dB conversion gain enables the elimination of a complete IF amplifier stage within the receiver lineup. The MAX19996'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. Through this combination of integration and performance, the device reduces downconverter solution size by a factor of 2x and the discrete part count by 34%.
The MAX19996 is packaged in a compact, 5mm x 5mm, 20-pin TQFN that is pin compatible with the MAX19996A* (a 2300MHz to 3900MHz single mixer). It is also pin similar to the MAX9993/MAX9994/MAX9996 (1700MHz to 2200MHz mixers) and the MAX9984/MAX9986 (400MHz to 1000MHz mixers). This entire family of downconverters is ideal for applications in which a common PCB layout is used for multiple frequency bands.
Maxim Integrated Products
