MAX9985

PRODUCTION

MAX9985

Dual, SiGe, High-Linearity, 700MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch

Highest Linearity, Lowest Noise 700MHz to 1000MHz Downconverting SiGe Mixer for 2.5G and 3G Base Stations

PRODUCTION

Not the part you were looking for?

Go to Product Selection Table

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $14.27

Features

700MHz to 1000MHz RF Frequency Range
570MHz to 865MHz LO Frequency Range
50MHz to 250MHz IF Frequency Range
6dB Typical Conversion Gain
10.5dB Typical Noise Figure
+28.5dBm Typical Input IP3
+16.2dBm Typical Input 1dB Compression Point
77dBc Typical 2RF-2LO Spurious Rejection at P_RF = -10dBm
Dual Channels Ideal for Diversity Receiver Applications
47dB Typical Channel-to-Channel Isolation
-3dBm to +3dBm LO Drive
Integrated LO Buffer
Internal RF and LO Baluns for Single-Ended Inputs
Built-In SPDT LO Switch with 43dB LO1-to-LO2 Isolation and 50ns Switching Time
Pin-Compatible with MAX9995 1700MHz to 2200MHz Mixer
Lead(Pb)-Free Package

Additional Details

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 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 iDEN^® base-station applications.

The MAX9985 dual-channel downconverter achieves a high 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 T_C = -40°C to +100°C.

Applications

850MHz WCDMA Base Stations
cdmaOne™ and cdma2000® Base Stations
Digital and Spread-Spectrum Communication Systems
Fixed Broadband Wireless Access
GSM 850/GSM 950, 2G/2.5G EDGE Base Stations
iDEN® Base Stations
Microwave Links
Military Systems
Private Mobile Radios
Wireless Local Loop

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $14.27

Technical Documents 3

MAX9985: Dual, SiGe, High-Linearity, 700MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch Data Sheet (Rev.1) 01/29/2013

MAX9985 Reliability Data 01/12/2023

PCBs Layout Guidelines for RF & Mixed-Signal 09/14/2011

Design Resources 2

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX9985ETX+	36-LFCSP-6X6X0.75	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
MAX9985ETX+T	36-LFCSP-6X6X0.75	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

MAX9985ETX+
Pin/Package Drawing
36-LFCSP-6X6X0.75
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

MAX9985ETX+T
Pin/Package Drawing
36-LFCSP-6X6X0.75
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Companion Parts 20

Parts	Product Life Cycle	Description
I/Q Demodulators2
MAX2021	PRODUCTION	High-Dynamic-Range, Direct Up-/Downconversion 650MHz to 1200MHz Quadrature Mod/Demod
MAX2022	PRODUCTION	High-Dynamic-Range, Direct Up/Downconversion 1500MHz to 3000MHz Quadrature Modulator/Demodulator
I/Q Downconverters/Receivers10
MAX9984	PRODUCTION	SiGe High-Linearity, 400MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch
MAX9986	Obsolete	SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch
MAX9986A	PRODUCTION	SiGe High-Linearity, 815MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch
MAX9993	PRODUCTION	High-Linearity 1700MHz to 2200MHz Down-Conversion Mixer with LO Buffer/Switch
MAX9994	PRODUCTION	SiGe High-Linearity, 1400MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch
MAX9995	Obsolete	Dual, SiGe, High-Linearity, 1700MHz to 2700MHz Downconversion Mixer with LO Buffer/Switch
MAX9996	PRODUCTION	SiGe High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch
MAX2029	PRODUCTION	High-Linearity, 815MHz to 1000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch
MAX2031	PRODUCTION	High-Linearity, 650MHz to 1000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch
MAX2041	PRODUCTION	High-Linearity, 1700MHz to 3000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch
Product6
MAX9987		+14dBm to +20dBm LO Buffers/Splitters with ±1dB Variation
MAX9990		+14dBm to +20dBm LO Buffers with ±1dB Variation
MAX9981		825MHz to 915MHz, Dual SiGe High-Linearity Active Mixer
MAX9982		825MHz to 915MHz, SiGe High-Linearity Active Mixer
MAX2039	Obsolete	High-Linearity, 1700MHz to 2200MHz Upconversion/Downconversion Mixer with LO Buffer/Switch
MAX2043		1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer
VCO Buffers and Splitters2
MAX9988	LAST TIME BUY	+14dBm to +20dBm LO Buffers/Splitters with ±1dB Variation
MAX9989	PRODUCTION	+14dBm to +20dBm LO Buffers with ±1dB Variation