MAX19757

Dual, SiGe, High-Linearity, 1700MHz to 2700MHz Downconversion Mixer with Advanced Shutdown Features

Up to 50% Lower Power Consumption Compared to Legacy Dual Mixers!

Data Sheet (Rev. 0)
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Overview

  • 1700MHz to 2700MHz RF Frequency Range
  • 1800MHz to 2600MHz LO Frequency Range
  • 50MHz to 500MHz IF Frequency Range
  • 25.3dBm IIP3
  • 8.8dB Conversion Gain
  • 13.1dBm Input 1dB Compression Point
  • 10.4dB Noise Figure
  • 73dBc 2RF–2LO Spurious Rejection at PRF = -10dBm
  • Dual Channels Ideal for Diversity Receiver Applications
  • Integrated LO Buffer
  • -3dBm to +3dBm LO Drive
  • Built-In SPDT LO Switch with 50dB LO-to-LO Isolation and 240ns Switching Time
  • 46dB Channel Isolation
  • Optional On-Chip Detector at IF Output Automatically Adjusts Bias Current for Optimum Power Management
  • External Current-Setting Resistors Allow Tradeoff Between Power and Performance
  • Advanced Shutdown Features Include:
    • Independent Path Power-Down
    • Rapid Power-Down/Power-Up Modes for Toggling Between On/Off States in TDD Applications
    • Controlled LO Port Impedance Minimizes VCO Pulling During Power Cycling

The MAX19757 dual-channel downconverter is designed to provide 8.8dB gain, +25.3dBm input IP3 and 10.4dB NF for a multitude of 1700MHz to 2700MHz basestation receiver applications. With an optimized LO frequency range of 1800MHz to 2600MHz, this mixer supports both high- and low-side LO injection architectures for 1700MHz to 2200MHz and 2000MHz to 2700MHz RF bands, respectively. Independent path shutdown allows the user to save DC power during low-peak usage times or in TDD TX mode.

The device integrates baluns in the RF and LO ports, an LO buffer, two double-balanced mixers, and a pair of differential IF output amplifiers. The MAX19757 requires a typical LO drive of 0dBm, and a supply current typically 300mA at band center and 350mA across the LO frequency band to achieve the targeted linearity performance.

The MAX19757 is available in a compact 36-pin TQFN package (6mm x 6mm x 0.8mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +105°C temperature range.

Applications

  • 2.3GHz WCS Base Stations
  • 2.5GHz WiMAX®, LTE, TD-LTE Base Stations
  • 2.7GHz MMDS Base Stations
  • DCS1800 and PCS1900 and EDGE Base Stations
  • Fixed Broadband Wireless Access
  • Military Systems
  • Private Mobile Radios
  • UMTS/WCDMA, TD-SCDMA and cdma2000® 3G Base Stations
  • Wireless Local Loop
MAX19757
Dual, SiGe, High-Linearity, 1700MHz to 2700MHz Downconversion Mixer with Advanced Shutdown Features
MAX19757: Typical Application Circuit
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Documentation

Data Sheet 1

Technical Articles 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
RF Mixers 5
MAX19985A
LAST TIME BUY Dual, SiGe, High-Linearity, High-Gain, 700MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch
MAX19995
PRODUCTION Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch
MAX19995A
PRODUCTION Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch
MAX19997A
PRODUCTION Dual, SiGe High-Linearity, High-Gain, 1800MHz to 2900MHz Downconversion Mixer with LO Buffer/Switch
MAX19999
Dual, SiGe High-Linearity, 3000MHz to 4000MHz Downconversion Mixer with LO Buffer
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