MAX2172

PRODUCTION

Direct-Conversion to Low-IF Tuner for Digital Audio Broadcast

High-Performance Digital Radio Tuner Incorporates Fast and Accurate RSSI Function

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Overview

  • +2.7V to +3.5V Supply Voltage Range
  • Low-IF Output Eliminates IF-Saw Filter
  • Integrated FM/VHF-III Bandpass Filter
  • Integrated Low-IF Bandpass Filter
  • Sigma-Delta Fractional-N Synthesizer
  • +45dBc ACPR (N±1)
  • 2.9dB Typical Noise Figure for VHF-III (Includes On-Chip Tracking Filter)
  • 3.1dB Typical Noise Figure for L-Band
  • VHF-III Sensitivity of -101dBm
  • L-Band Sensitivity of -101dBm
  • Baseband Overload Detector Controls RF AGC
  • Fast Channel Scan RSSI 5-Bit Output
  • FM (S+N)/N = 26dB at -111dBm
  • Small 6mm x 6mm Thin QFN Package

The MAX2172 direct-conversion to low-IF tuner is designed for digital audio broadcast (DAB) and terrestrial digital multimedia broadcast (T-DMB) applications, covering an input frequency range of 168MHz to 240MHz (VHF-III), 1452MHz to 1492MHz (L-band), and also 87MHz to 108MHz (FM). The MAX2172 achieves a high level of component integration, allowing lowpower, tuner-on-board designs. The direct-conversion to low-IF architecture eliminates the need for an IF-SAW filter while providing a balanced 2.048MHz center frequency baseband output to the demodulator.

The MAX2172 provides a buffered reference clock at the crystal frequency.

A sigma-delta fractional-N synthesizer is incorporated to optimize both close-in and wideband phase noise performances for OFDM applications where sensitivity to both 1kHz phase noise and wideband phase noise related to strong adjacents can be a problem.

The MAX2172 is available in a 40-pin thin QFN package (6mm x 6mm) with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Applications

  • Fixed and Mobile Digital Audio Broadcast (DAB, DAB+) with FM
  • Terrestrial Digital Multimedia Broadcast (T-DMB) with FM
MAX2172
Direct-Conversion to Low-IF Tuner for Digital Audio Broadcast
MAX2172: Functional Diagram
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Documentation

Reliability Data 1

Technical Articles 1

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Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
RF Analog Receivers 2
MAX2170
PRODUCTION Direct-Conversion to Low-IF Tuners for Digital Audio Broadcast
MAX3580
Direct-Conversion TV Tuner
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Tools & Simulations

Software Development 1

Evaluation Kits

MAX2172EVKIT

Evaluation Kit for the MAX2172

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Features and Benefits

  • Easy Evaluation of the MAX2172
  • +2.7V to +3.5V Single-Supply Operation
  • 50Ω SMA Connector on the RF Ports
  • 50Ω BNC Connector for the Baseband Output
  • All Critical Peripheral Components Included
  • Parallel Port for I²C Interfacing
  • PC Control Software Available at www.maximintegrated.com
  • Lead(Pb)-Free and RoHS Compliant

Product Details

The MAX2172 evaluation kit (EV kit) simplifies evaluation of the MAX2172 direct-conversion to low-IF tuner. It enables testing of the device's performance and requires no additional support circuitry. 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. The MAX2172 EV kit is fully assembled and tested at the factory.

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 of materials, and artwork for each layer of the PCB.

Applications

  • Fixed and Mobile Digital Audio Broadcast (DAB, DAB+) with FM
  • Terrestrial Digital Multimedia Broadcast (T-DMB) with FM
MAX2172EVKIT
Evaluation Kit for the MAX2172

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