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

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

Product Details

Key Features

Applications/Uses

Parametric specs for TV Tuners
End Equipment VSAT
Input Frequency (MHz) 925 to 2175
IF Output Frequency (MHz) 500
Noise Figure (dB) (typ) 8
VSUPPLY (V) 3.13 to 3.47
Footprint (mm x mm) 5.0 x 5.0
Oper. Temp. (°C) -40 to +85
Package/Pins TQFN/28
Budgetary
Price (See Notes)
4.88
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Simplified Block Diagram

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Parameters

Parametric specs for TV Tuners
End Equipment VSAT
Input Frequency (MHz) 925 to 2175
IF Output Frequency (MHz) 500
Noise Figure (dB) (typ) 8
VSUPPLY (V) 3.13 to 3.47
Footprint (mm x mm) 5.0 x 5.0
Oper. Temp. (°C) -40 to +85
Package/Pins TQFN/28
Budgetary
Price (See Notes)
4.88

Key Features

  • 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-Compatible, 2-Wire Serial Interface
  • Very Small, 5mm x 5mm, 28-Pin TQFN Package

Applications/Uses

  • VSATs

Description

The MAX2223 low-cost, direct-conversion tuner IC is de- signed for satellite set-top and very small aperture termi- nal (VSAT) applications. The device directly converts the satellite signals from the LNB to baseband using a broad- band 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 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.

Simplified Block Diagram

MAX2223: Typical Application Circuit MAX2223: 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 .