The MAX9985 high-linearity, dual-channel downconversion mixer is designed to provide approximately 6dB gain, +28.5dBm of IIP3, and 10.5dB 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 low-side LO injection architectures. In addition, the broad frequency range makes the MAX9985 ideal for GSM 850/950, 2G/2.5G EDGE, WCDMA, cdma2000®, and iDEN® base-station applications.
The MAX9985 dual-channel downconverter achieves ahigh level of component 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 single-ended RF and single-ended LO inputs. The MAX9985 requires a typical 0dBm LO drive. Supply current is adjustable up to 400mA.
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.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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MAX9985
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TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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RoHS/Lead-Free? Materials Analysis
MAX9985ETX
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TQFN;36 pin;37 mm²
Outline Drawing: 21-0141 (PDF)
Land Pattern: 90-0049 (PDF)
Use pkgcode/variation: T3666-2*
MAX2022 High-Dynamic-Range, Direct Upconversion 1500MHz to 2500MHz Quadrature Modulator MAX2029 High-Linearity, 815MHz to 1000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch MAX2041 High-Linearity, 1700MHz to 3000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch MAX2021 High-Dynamic-Range, Direct Up-/Downconversion, 750MHz to 1200MHz Quadrature Modulator/Demodulator MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer MAX2030 Dual, SiGe, High-Linearity, 700MHz to 1000MHz Up/Downconversion Mixer with LO Buffer/Switch MAX9982 825MHz to 915MHz, SiGe High-Linearity Active Mixer MAX2040 Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Up/Downconversion Mixer with LO Buffer/Switch MAX9981 825MHz to 915MHz, Dual SiGe High-Linearity Active Mixer MAX9993 High-Linearity 1700MHz to 2200MHz Down-Conversion Mixer with LO Buffer/Switch MAX9984 SiGe High-Linearity, 400MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch MAX9996 SiGe High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch MAX2031 High-Linearity, 650MHz to 1000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch MAX9995 Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch MAX9986 SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch MAX9994 SiGe High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch MAX2039 High-Linearity, 1700MHz to 2200MHz Upconversion/Downconversion Mixer with LO Buffer/Switch MAX9995A Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch MAX9986A SiGe High-Linearity, 815MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch MAX2030A Dual, SiGe, High-Linearity, 700MHz to 1000MHz Up/Downconversion Mixer with LO Buffer/Switch MAX2040A Dual, SiGe, High-Linearity, 1700MHz to 3000MHz Up/Downconversion Mixer with LO Buffer/Switch MAX9987, MAX9988 +14dBm to +20dBm LO Buffers/Splitters with ±1dB Variation MAX9989, MAX9990 +14dBm to +20dBm LO Buffers with ±1dB Variation
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