SiGe, High-Linearity, 850MHz to 1550MHz Up/Downconversion Mixer with LO Buffer

The MAX2051 high-linearity, up/downconversion mixer provides +35dBm input IP3, 7.8dB noise figure (NF), and 7.4dB conversion loss for 850MHz to 1550MHz wireless infrastructure and multicarrier cable head-end down-stream video, video-on-demand (VOD), and cable modem termination systems (CMTS) applications. The MAX2051 also provides excellent suppression of spurious intermodulation products (> 77dBc at an RF level of -14dBm), making it an ideal downconverter for DOCSIS® 3.0 and Euro DOCSIS cable head-end systems. With an LO circuit tuned to support frequencies ranging from 1200MHz to 2250MHz, the MAX2051 is ideal for high-side LO injection applications over an IF frequency range of 50MHz to 1000MHz.

In addition to offering excellent linearity and noise performance, the MAX2051 also yields a high level of component integration. The device integrates baluns in the RF and LO ports, which allow for a single-ended RF input and a single-ended LO input. The MAX2051 requires a typical LO drive of 0dBm and a supply current guaranteed to below 130mA.

The MAX2051 is available in a compact 5mm x 5mm, 20-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

* Cable Modem Termination Systems * Integrated Digital Enhanced Network (iDEN®) Base Stations * Microwave and Fixed Broadband Wireless Access * Microwave Links * Military Systems * Predistortion Receivers * Private Mobile Radios * Video-on-Demand and DOCSIS-Compliant Edge QAM Modulation * WiMAX™ Base Stations and Customer Premise Equipment * Wireless Local Loop

* 850MHz to 1550MHz RF Frequency Range

* 1200MHz to 2250MHz LO Frequency Range

* 50MHz to 1000MHz IF Frequency Range

* DOCSIS 3.0 and Euro DOCSIS Compatible

* 7.4dB Typical Conversion Loss

* 7.8dB Typical Noise Figure

* +24dBm Typical Input 1dB Compression Point

* +35dBm Typical Input IP3

* 88dBc Typical 2RF-LO Rejection at PRF = -14dBm

* Integrated LO Buffer

* Integrated RF and LO Baluns for Single-Ended Inputs

* Low LO Drive (0dBm Nominal)

* External Current-Setting Resistor Provides Option for Operating Device in Reduced-Power/Reduced-Performance Mode