Products
MAX9985
PRODUCTIONDual, 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
- Part Models
- 2
- 1ku List Price
- Starting From $16.51
Viewing:
Overview
- 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 PRF = -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
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 TC = -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
Documentation
Data Sheet 1
Technical Articles 1
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+ | LFCSP | ||
| MAX9985ETX+T | LFCSP |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Modulators & Demodulators 2 | ||
| 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 |
| Oscillators 4 | ||
| MAX9987 | Obsolete | +14dBm to +20dBm LO Buffers/Splitters with ±1dB Variation |
| MAX9988 | Obsolete | +14dBm to +20dBm LO Buffers/Splitters with ±1dB Variation |
| MAX9989 | PRODUCTION | +14dBm to +20dBm LO Buffers with ±1dB Variation |
| MAX9990 | Obsolete | +14dBm to +20dBm LO Buffers with ±1dB Variation |
| RF Mixers 14 | ||
| MAX9981 | Obsolete | 825MHz to 915MHz, Dual SiGe High-Linearity Active Mixer |
| MAX9982 | Obsolete | 825MHz to 915MHz, SiGe High-Linearity Active Mixer |
| MAX9984 | PRODUCTION | SiGe High-Linearity, 400MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch |
| MAX9986 | LAST TIME BUY | 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 | Obsolete | 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 | LAST TIME BUY | 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 |
| MAX2039 | Obsolete | High-Linearity, 1700MHz to 2200MHz Upconversion/Downconversion Mixer with LO Buffer/Switch |
| MAX2041 | PRODUCTION | High-Linearity, 1700MHz to 3000MHz Upconversion/Downconversion Mixer with LO Buffer/Switch |
| MAX2043 | Obsolete | 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer |
Latest Discussions
No discussions on MAX9985 yet. Have something to say?
Start a Discussion on EngineerZone®