Dual, SiGe High-Linearity, 3000MHz to 4000MHz Downconversion Mixer with LO Buffer

The MAX19999 dual-channel downconverter provides 8.3dB of conversion gain, +24dBm input IP3, +11.4dBm 1dB input compression point, and a noise figure of 10.5dB for 3000MHz to 4000MHz WiMAX™ and LTE diversity receiver applications. With an optimized LO frequency range of 2650MHz to 3700MHz, this mixer is ideal for low-side LO injection architectures.

In addition to offering excellent linearity and noise performance, the MAX19999 also yields a high level of component integration. This device includes two double-balanced passive mixer cores, two LO buffers, and a pair of differential IF output amplifiers. Integrated on-chip baluns allow for single-ended RF and LO inputs.

The MAX19999 requires a nominal LO drive of 0dBm and a typical supply current of 388mA at VCC = +5.0V or 279mA at VCC = +3.3V.

The MAX19999 is pin compatible with the MAX19997A 1800MHz to 2900MHz mixer and pin similar with the MAX19985/MAX19985A and MAX19995/MAX19995A series of 700MHz to 2200MHz mixers, making this entire family of downconverters ideal for applications where a common PCB layout is used across multiple frequency bands.

The MAX19999 is available in a compact 6mm x 6mm, 36-pin thin QFN package with an exposed pad. Electrical performance is guaranteed over the extended temperature range, from TC = -40°C to +85°C.

Applications

* 3.5GHz WiMAX and LTE Base Stations * Fixed Broadband Wireless Access * Microwave Links * Military Systems * Private Mobile Radios * Wireless Local Loop

* 3000MHz to 4000MHz RF Frequency Range

* 2650MHz to 3700MHz LO Frequency Range

* 50MHz to 500MHz IF Frequency Range

* 8.3dB Conversion Gain

* +24dBm Input IP3

* 10.5dB Noise Figure

* +11.4dBm Input 1dB Compression Point

* 74dBc Typical 2 x 2 Spurious Rejection at PRF = -10dBm

* Dual Channels Ideal for Diversity Receiver Applications

* Integrated LO Buffer

* Integrated LO and RF Baluns for Single-Ended Inputs

* Low -3dBm to +3dBm LO Drive

* Pin Compatible with the MAX19997A 1800MHz to 2900MHz Mixer

* Pin Similar to the MAX9995/MAX9995A and MAX19995/MAX19995A 1700MHz to 2200MHz Mixers and the MAX9985/MAX9985A and MAX19985/MAX19985A 700MHz to 1000MHz Mixers

* 39dB Channel-to-Channel Isolation

* Single +5.0V or +3.3V Supply

* External Current-Setting Resistors Provide Option for Operating Device in Reduced-Power/Reduced-Performance Mode