Maxim Integrated MAX2121 Direct-Conversion Tuner IC

Item #: COM-19557
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Price: $32.12 inc GST
    The product is in stock Availability: Discontinued
    Usually ships In (Unavailable - Discontinued Product)

    Maxim MAX2121 Direct-Conversion Tuner IC is a low-cost, direct-conversion tuner IC designed for satellite set-top and VSAT applications. It directly converts the satellite signals from the LNB to the baseband using a broadband I/Q downconverter. The operating frequency range extends from 925MHz to 2175MHz.

    The device includes an LNA and an RF variable-gain amplifier, I and Q downconverting mixers, and base-band lowpass filters and digitally controlled baseband variable-gain amplifiers. Together, the RF and base-band variable-gain amplifiers provide more than 80dB of gain control range.

    The Maxim MAX2121 includes fully monolithic VCOs, and 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.


    • 925MHz to 2175MHz frequency range
    • Monolithic VCO
      • -97dBc/Hz at 10kHz low phase noise
      • No calibration required
    • -75dBm to 0dBm high dynamic range
    • 123.75MHz integrated LP filters
    • 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