High-Linearity, 650MHz to 1000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch

The MAX2031 high-linearity passive upconverter or downconverter mixer is designed to provide +36dBm IIP3, 7dB NF, and 7dB conversion loss for a 650MHz to 1000MHz RF frequency range to support GSM/cellular base-station transmitter or receiver applications. With a 650MHz to 1250MHz LO frequency range, this particular mixer is ideal for high-side LO injection architectures. For a pin-to-pin-compatible mixer meant for low-side LO injection, refer to the MAX2029.

In addition to offering excellent linearity and noise performance, the MAX2031 also yields a high level of component integration. This device includes a double-balanced passive mixer core, a dual-input LO selectable switch, and an LO buffer. On-chip baluns are also integrated to allow for a single-ended RF input for downconversion (or RF output for upconversion), and single-ended LO inputs. The MAX2031 requires a nominal LO drive of 0dBm, and supply current is guaranteed to be below 100mA.

The MAX2031 is pin compatible with the MAX2039/MAX2041 1700MHz to 2200MHz mixers, making this family of passive upconverters and downconverters ideal for applications where a common PC board layout is used for both frequency bands.

The MAX2031 is available in a compact 20-pin thin QFN package (5mm x 5mm) with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Applications

* Communication Systems * Digital and Spread-Spectrum * GSM 850/GSM 900 2G and 2.5G EDGE Base Stations * Integrated Digital Enhanced Network (iDEN®) Base Stations * Microwave and Fixed Broadband Wireless Access * Predistortion Receivers * WCDMA/LTE and cdma2000® Base Stations * WiMAX™ Base Stations and Customer Premise Equipment * Wireless Local Loop

* 650MHz to 1000MHz RF Frequency Range

* 650MHz to 1250MHz LO Frequency Range

* 570MHz to 900MHz LO Frequency Range (Refer to the MAX2029 Data Sheet)

* DC to 250MHz IF Frequency Range

* 7dB Conversion Loss

* +36dBm Input IP3

* +27dBm Input 1dB Compression Point

* 7dB Noise Figure

* Integrated LO Buffer

* Integrated RF and LO Baluns

* Low -3dBm to +3dBm LO Drive

* Built-In SPDT LO Switch with 49dB LO1 to LO2 Isolation and 50ns Switching Time

* Pin Compatible with the MAX2039/MAX2041 1700MHz to 2200MHz Mixers

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