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Complete Dual-Band Quadrature Transmitters

Highly Integrated Dual-Band Quadrature Transmitters for Cell Phones

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Dual-Band, Triple-Mode Operation
  • +9dBm Linear Output Power
  • 100dB Power-Control Range
  • Supply Current Drops as Output Power is Reduced
  • Dual Synthesizer for IF and RF LO
  • Dual On-Chip IF VCO
  • QSPI/SPI/MICROWIRE-Compatible 3-Wire Bus
  • Digitally Controlled Operational Modes
  • Single Sideband Upconverter Eliminates SAW Filters
  • Directly Drives Power Amplifier
  • Applications/Uses

    • CDMA, cdma2000®, TDMA, WCDMA, GAIT Mobile Phones
    • GAIT Mobile Phones
    • High-Speed Data Modems
    • Satellite Phones
    • Wireless Data Links (WAN/LAN)
    • Wireless Local Area Networks (WLANs)

    Description

    The MAX2361 dual-band, triple-mode complete transmitter for cellular phones represents an integrated and architecturally advanced solution for this application. The device takes a differential I/Q baseband input and converts it up to IF through a quadrature modulator and IF variable-gain amplifier (VGA). The signal is then routed to an external bandpass filter and upconverted to RF through an image-reject mixer and RF VGA. The signal is further amplified with an on-chip PA driver. An IF synthesizer, an RF synthesizer, a local oscillator (LO) buffer, and a 3-wire programmable bus complete the basic functional blocks of this IC. The MAX2363 supports single-band, single- mode (PCS) operation. The MAX2365 supports single- band cellular dual-mode operation.

    The MAX2361 enables architectural flexibility because of its two IF voltage-controlled oscillators (VCOs), two IF ports, two RF LO input ports, and three PA driver output ports. The devices allow the use of a single receive IF frequency and split-band PCS filters for optimum out-ofband noise performance. The low-noise PA drivers allow up to three RF SAW filters to be eliminated. Select a mode of operation by loading data on the SPI™/QSPI™/MICROWIRE™-compatible 3-wire serial bus. Charge-pump current, IF/RF gain balancing, standby, shutdown plus additional functions, are also controlled with the serial interface.

    The MAX2361/MAX2363/MAX2365 come in a 48-pin TQFN-EP and QFN-EP package and are specified for the extended (-40°C to +85°C) temperature range.

    Simplified Block Diagram

    MAX2361, MAX2363, MAX2365: Functional Diagram MAX2361, MAX2363, MAX2365: Functional Diagram Zoom icon

    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 .

    Sampling:
    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.