×

SparkFun will be closed Monday 7/4/2022 for the 4th of July holiday. Orders placed after 2 pm MT on Friday 7/1/2022 will be processed on Tuesday 7/6/2022. SparkFun Support will also resume on Tuesday 7/6/2022. Have a safe holiday!

Maxim Integrated MAX2121 Direct-Conversion Tuner IC

Added to your shopping cart

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

Comments

Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

Customer Reviews

No reviews yet.