Ultra-Wideband, Direct-Conversion, L-Band Satellite Tuner

Industry's Widest L-Band Tuner with 1GHz RF Bandwidth



The MAX2223 low-cost, direct-conversion tuner IC is designed for satellite set-top and Very Small Aperture Terminal (VSAT) applications. The device directly converts the satellite signals from the LNB to baseband using a broadband I/Q down-converter. The operating frequency range extends from 925MHz to 2175MHz.

The device includes an LNA and an RF variable-gain amplifier, I and Q down-converting mixers, and baseband amplifiers. The RF variable-gain amplifier provides more than 70dB of gain control range. The device supports an RF bandwidth of 1GHz.

The device includes fully monolithic VCOs, as well as a complete fractional-N frequency synthesizer. Additionally, an on-chip crystal oscillator is provided along with a buffered output for driving additional tuners and demodulators. Synthesizer programming and device configuration are accomplished with a 2-wire serial interface. The IC features a VCO auto-select (VAS) function that automatically selects the proper VCO. For multituner applications, the device can be configured to have one of two 2-wire interface addresses. A low-power standby mode is available whereupon the signal path is shutdown while leaving the reference oscillator, digital interface, and buffer circuits active, providing a method to reduce power in single and multituner applications.

A small number of passive components are needed to form a complete broadband satellite tuner DVB-S2 RF front-end solution. The tuner is available in a very small, 5mm x 5mm, 28-pin TQFN package.
MAX2223: Typical Application Circuit MAX2223: Typical Application Circuit 放大+


  • 925MHz to 2175MHz Frequency Range
  • Monolithic VCO
    • Low Phase Noise: -97dBc/Hz at 10kHz
    • No Calibration Required
  • High Dynamic Range: -75dBm to 0dBm
  • 1GHz RF Bandwidth Supported
  • Single +3.3V ±5% Supply
  • Low-Power Standby Mode
  • Address Pin for Multituner Applications
  • Differential I/Q Interface
  • I2C 2-Wire Serial Interface
  • Very Small, 5mm x 5mm, 28-Pin TQFN Package


  • VSAT

请查看具体的参数规格 TV Tuners (9)

Part NumberApplicationsInput Frequency
IF Output Frequency
Noise Figure
(mm x mm)
Oper. Temp.
typSee Notes
MAX2223 NEW!VSAT925 to 217550083.13 to 3.475.0 x 5.0-40 to +85
$4.88 @1k

Pricing Notes:

MAX2223EVKIT: Evaluation Kit for the MAX2223


  • MAX2223 IBIS
  • 申请可靠性报告: MAX2223 
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    Ultra-Wideband, Direct-Conversion, L-Band Satellite Tuner

    • 925MHz to 2175MHz Frequency Range
    • Monolithic VCO
    • High Dynamic Range: -75dBm to 0dBm

    类型 编号 标题
    评估板10380MAX2223EVKIT Evaluation Kit for the MAX2223