MAX9985 Datasheet | Maxim Integrated

Description The MAX9985 high-linearity, dual-channel downconversion mixer is designed to provide approximately 6d B gain, +28.5d Bm of IIP3, and 10.5d B of noise figure (NF) ideal for diversity receiver applications. With a 700MHz to 1000MHz RF frequency range and a 570MHz to 865MHz LO frequency range, this mixer is ideal for lowside LO injection architectures. In addition, the broad frequency range makes the MAX9985 ideal for GSM 850/950, 2G/2.5G EDGE, WCDMA, cdma2000®, and i DEN® base-station applications. The MAX9985 dual-channel downconverter achieves a high level of ponent integration. The MAX9985 integrates two double-balanced active mixer cores, two LO buffers, a dual-input LO selectable switch, and a pair of differential IF output amplifiers. In addition, integrated on-chip baluns at the RF and LO ports allow for singleended RF and single-ended LO inputs. The MAX9985 requires a typical 0d Bm LO drive. Supply current is adjustable up to 400m A. The MAX9985 is available in a 36-pin thin QFN package (6mm x 6mm) with an exposed paddle. Electrical performance is guaranteed over the extended temperature range, from TC = -40°C to +85°C. Features o 700MHz to 1000MHz RF Frequency Range o 570MHz to 865MHz LO Frequency Range o 50MHz to 250MHz IF Frequency Range o 6d B Typical Conversion Gain o 10.5d B Typical Noise Figure o +28.5d Bm Typical Input IP3 o +16.2d Bm Typical Input 1d B pression Point o 77d Bc Typical 2RF-2LO Spurious Rejection at PRF = -10d Bm o Dual Channels Ideal for Diversity Receiver Applications o 47d B Typical Channel-to-Channel Isolation o -3d Bm to +3d Bm LO Drive o Integrated LO Buffer o Internal RF and LO Baluns for Single-Ended Inputs o Built-In SPDT LO Switch with 43d B LO1-to-LO2 Isolation and 50ns Switching Time o Pin-patible with MAX9995/MAX9995A 1700MHz to 2200MHz Mixers o Lead-Free Package Available Applications 850MHz WCDMA Base Stations GSM 850/GSM 950, 2G/2.5G EDGE Base Stations cdma One™ and cdma2000 Base Stations i DEN Base Stations Fixed...