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MAX9986：SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch

Lowest Noise, Highest Linearity 1GHz SiGe Mixer for 2.5G and 3G Base Stations

The MAX9986 high-linearity downconversion mixer provides 10dB gain, +23.6dBm IIP3, and 9.3dB NF for 815MHz to 995MHz base-station receiver applications. With a 960MHz to 1180MHz LO frequency range, this particular mixer is ideal for high-side LO injection receiver architectures. Low-side LO injection is supported by the MAX9984, which is pin-for-pin and functionally compatible with the MAX9986. In addition to offering excellent linearity and noise performance, the MAX9986 also yields a high level of component integration. This device includes a double-balanced passive mixer core, an IF amplifier, a dual-input LO selectable switch, and an LO buffer. On-chip baluns are also integrated to allow for single-ended RF and LO inputs. The MAX9986 requires a nominal LO drive of 0dBm, and supply current is guaranteed to be below 265mA. The MAX9984/MAX9986 are pin compatible with the MAX9994/MAX9996 1700MHz to 2200MHz mixers, making this entire family of downconverters ideal for applications where a common PC board layout is used for both frequency bands. The MAX9986 is also functionally compatible with the MAX9993. The MAX9986 is available in a compact, 20-pin, thin QFN package (5mm x 5mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Key Features 815MHz to 995MHz RF Frequency Range 960MHz to 1180MHz LO Frequency Range (MAX9986) 570MHz to 850MHz LO Frequency Range (MAX9984) 50MHz to 250MHz IF Frequency Range 10dB Conversion Gain +23.6dBm Input IP3 +12dBm Input 1dB Compression Point 9.3dB Noise Figure 67dBc 2LO-2RF Spurious Rejection at PRF = -10dBm Integrated LO Buffer Integrated RF and LO Baluns for Single-Ended Inputs Low -3dBm to +3dBm LO Drive Built-In SPDT LO Switch with 49dB LO1 to LO2 Isolation and 50ns Switching Time Pin Compatible with MAX9994/MAX9996 1700MHz to 2200MHz Mixers Functionally Compatible with MAX9993 External Current-Setting Resistors Provide Option for Operating Mixer in Reduced Power/Reduced Performance Mode Lead-Free Package Available

MAX9986: Typical Application Circuit Applications/Uses 850MHz WCDMA Base Stations cdmaOne™ and cdma2000® Base Stations Digital and Spread-Spectrum Communication Systems Fixed Broadband Wireless Access GSM 850/GSM 900 2G and 2.5G EDGE Base Stations iDEN® Base Stations Microwave Links Military Systems Predistortion Receivers Private Mobile Radios (PMRs) Wireless Local Loop (WLL)

DataSheet

Parametrics

Design kits & evaluation modules

• MAX9986EVKIT

Quality and Environmental Data

• MAX9986.pdf

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