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SiGe, High-Linearity, 2300MHz to 4000MHz Downconversion Mixer with LO Buffer

Lowest Noise, Highest Linearity 2300MHz to 4000MHz SiGe Mixer for LTE, WiMAX and MMDS Base Stations, Featuring Superior IIP3, NF and 2 x 2 Performance

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • 2300MHz to 4000MHz RF Frequency Range
  • 2600MHz to 4300MHz LO Frequency Range
  • 50MHz to 500MHz IF Frequency Range
  • 8.7dB Conversion Gain
  • 9.7dB Noise Figure
  • +24.3dBm Typical Input IP3
  • +11.3dBm Typical Input 1dB Compression Point
  • 67dBc Typical 2RF - 2LO Spurious Rejection at PRF = -10dBm
  • Integrated LO Buffer
  • Integrated RF and LO Baluns for Single-Ended Inputs
  • Low -3dBm to +3dBm LO Drive
  • Pin Compatible with the MAX19996/MAX19996A 2000MHz to 3900MHz Mixers
  • Pin Similar with the MAX9984/MAX9986/MAX9986A Series of 400MHz to 1000MHz Mixers and the MAX9993/MAX9994/MAX9996 Series of 1700MHz to 2200MHz Mixers
  • Single 5.0V or 3.3V Supply
  • External Current-Setting Resistors Provide Option for Operating Device in Reduced-Power/Reduced-Performance Mode

Applications/Uses

  • 2.5GHz WiMAX and LTE Base Stations
  • 2.7GHz MMDS Base Stations
  • 3.5GHz WiMAX and LTE Base Stations
  • Fixed Broadband Wireless Access
  • Military Systems
  • Private Mobile Radios
  • Wireless Local Loop

Description

The MAX19998 single, high-linearity downconversion mixer provides 8.7dB of conversion gain, +24.3dBm input IP3, +11.3dBm 1dB input compression point, and a noise figure of 9.7dB for 2300MHz to 4000MHz WiMAX™, LTE, and MMDS receiver applications. With an ultra-wide LO 2600MHz to 4300MHz frequency range, the MAX19998 can be used in either low-side or high-side LO injection architectures for virtually all 2.5GHz and 3.5GHz applications. For a 2.5GHz variant tuned specifically for high-side injection, refer to the MAX19996A.

In addition to offering excellent linearity and noise performance, the MAX19998 also yields a high level of component integration. This device includes a double-balanced passive mixer core, an IF amplifier, and an LO buffer. On-chip baluns are also integrated to allow for single-ended RF and LO inputs. The MAX19998 requires a nominal LO drive of 0dBm, and supply current is typically 230mA at VCC = 5.0V or 150mA at VCC = 3.3V.

The MAX19998 is pin compatible with the MAX19996/MAX19996A 2000MHz to 3900MHz mixer family. The device is also pin similar with the MAX9984/MAX9986/MAX9986A 400MHz to 1000MHz mixers and the MAX9993/MAX9994/MAX9996 1700MHz to 2200MHz mixers, making this entire family of downconverters ideal for applications where a common PCB layout is used for multiple frequency bands.

The MAX19998 is available in a compact, 5mm x 5mm, 20-pin thin QFN with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX19998: Typical Application Circuit MAX19998: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .