MAX2112
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MAX2112

Complete, Direct-Conversion Tuner for DVB-S2 Applications

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3.3V Satellite Tuner Provides DVB-S2 Performance at Only 330mW

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 5
1ku List Price Starting From $5.26
Features
  • 925MHz to 2175MHz Frequency Range
  • Monolithic VCO
    • Low Phase Noise: -97dBc/Hz at 10kHz
    • No Calibration Required
  • High Dynamic Range: -75dBm to 0dBm
  • Integrated Variable BW LP Filters: 4MHz to 40MHz
  • 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 28-Pin TQFN Package
Additional Details
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The MAX2112 low-cost, direct-conversion tuner IC is designed for satellite set-top and VSAT applications. The IC is intended for 8PSK and Digital Video Broadcast (DVB-S2) applications.

The MAX2112 directly converts the satellite signals from the LNB to 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 baseband lowpass filters with programmable cutoff frequency control and digitally controlled baseband variable-gain amplifiers. Together, the RF and baseband variable-gain amplifiers provide more than 80dB of gain control range. The IC is compatible with virtually all DVB-S2 demodulators.

The MAX2112 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 autoselect (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 shut down while leaving the reference oscillator, digital interface, and buffer circuits active, providing a method to reduce power in single and multituner applications.

The MAX2112 is the most advanced DBS tuner available today. The low noise figure eliminates the need for an external LNA. A small number of passive components are needed to form a complete DVB-S2 RF front-end solution. The tuner is available in a very small 28-pin thin QFN package.

Applications

  • DirecTV and Dish Network DBS
  • DVB-S2
  • VSATs
Part Models 5
1ku List Price Starting From $5.26

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX2112CTI+
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MAX2112CTI+T
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MAX2112ETI+
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MAX2112ETI+T
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MAX2112ETI/GG8
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Product Lifecycle

PCN

Aug 14, 2023

- 2275A

WAFER FAB

MAX2112CTI+

PRODUCTION

MAX2112CTI+T

PRODUCTION

MAX2112ETI+

PRODUCTION

MAX2112ETI+T

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Aug 14, 2023

- 2275A

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WAFER FAB

MAX2112CTI+

PRODUCTION

MAX2112CTI+T

PRODUCTION

MAX2112ETI+

PRODUCTION

MAX2112ETI+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX2112EVKIT

Evaluation Kit for the MAX2112

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MAX2112EVKIT

Evaluation Kit for the MAX2112

Evaluation Kit for the MAX2112

Features and Benefits

  • Easy Evaluation of the MAX2112
  • 50Ω RF Input SMA Connector
  • 50Ω Baseband Output BNC Connector
  • Single 3.3V ±5% Supply
  • I²C 2-Wire Serial Interface
  • All Critical Peripheral Components Included
  • Fully Assembled and Tested
  • PC Control Software (Available at www.maximintegrated.com/evkitsoftware)

Product Detail

The MAX2112 evaluation kit (EV kit) simplifies the testing and evaluation of the IC direct-conversion tuner. The evaluation kit is fully assembled and tested at the factory. Standard 50Ω SMA and BNC connectors are included on the EV kit for the inputs and outputs to allow quick and easy evaluation on the test bench.

This document provides a list of equipment required to evaluate the device, a straightforward test procedure to verify functionality, a description of the EV kit circuit, the circuit schematic, a component list for the kit, and artwork for each layer of the PCB.

Applications

  • DirecTV and Dish Network DBS
  • DVB-S2
  • VSATs

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