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CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer

Complete CDMA IF Subsystem

Product Details

Key Features

Applications/Uses

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Key Features

  • Complete IF Subsystem Includes VCO and Synthesizer
  • Supports Dual-Band, Triple-Mode Operation
  • VGA with >110dB Gain Control
  • Quadrature Demodulator
  • High Output Level (2.7V)
  • Programmable Charge-Pump Current
  • Supports Any IF Frequency Between 40MHz and 300MHz
  • 3-Wire Programmable Interface
  • Low Supply Voltage (+2.7V)

Applications/Uses

  • Globalstar Dual-Mode Handsets
  • Single/Dual/Triple-Mode CDMA Handsets
  • Tetra Direct-Conversion Receivers
  • Wireless Data Links
  • Wireless Local Loop (WLL)

Description

The MAX2310/MAX2312/MAX2314/MAX2316 are IF receivers designed for dual-band, dual-mode, and single-mode N-CDMA and W-CDMA cellular phone systems. The signal path consists of a variable gain amplifier (VGA) and I/Q demodulator. The devices feature guaranteed +2.7V operation, a dynamic range of over 110dB, and high input IP3 (-33dBm at 35dB gain, 1.7dBm at -35dB).

Unlike similar devices, the MAX2310 family of receivers includes dual oscillators and synthesizers to form a self-contained IF subsystem. The synthesizer's reference and RF dividers are fully programmable through a 3-wire serial bus, enabling dual-band system architectures using any common reference and IF frequency. The differential baseband outputs have enough bandwidth to suit both N-CDMA and W-CDMA systems, and offer saturated output levels of 2.7VP-P at a low +2.75V supply voltage. Including the low-noise voltage-controlled oscillator (VCO) and synthesizer, the MAX2310 draws only 26mA from a +2.75V supply in CDMA (differential IF) mode.

The MAX2310/MAX2312/MAX2314/MAX2316 are available in 28-pin QSOP packages.

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 .