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MAX2598
Quad-Band TDD-WCDMA Bits-to-RF Radio Transmitter

Industry's First Complete Digital Bits to PA Out Transmit Subsystem for 3G TDD User Equipment


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Description
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The MAX2598 quad-band direct-conversion bits-to-RF radio transmitter is designed for 1x (3.84Mcps) and 2x (7.68Mcps) TDD-WCDMA applications. The part supports operation in the 874MHz, 1900MHz to 1920MHz, 2010MHz to 2025MHz, and 2050MHz to 2082MHz frequency bands.

The unique bits-to-RF architecture of the MAX2598 integrates 3 power amplifiers (PAs), quadrature mixers, variable-gain RF and baseband amplifiers, baseband filters, I and Q digital-to-analog converters (DACs), a fractional-N frequency synthesizer for local oscillator (LO) generation, and a fractional-N frequency synthesizer for sampling clock generation. Data is transferred from the baseband/DSP to the radio by a digital 1-bit sigma-delta modulated I and Q bitstream through an LVDS-like interface. The operating mode of the radio is fully programmable by a 3-wire serial interface.

The MAX2598 is specified for operation in the extended -40°C to +85°C temperature range and is available in a 9mm x 9mm x 1.4mm fcLGA package with exposed paddle (EP).

Key Features   Applications/Uses
  • Complete Digital Bits In to RF Out Radio Transmitter Subsystem
  • Supports 1x (3.84Mcps) and 2x (7.68Mcps) TDD-WCDMA Operation in the Following Bands:
    • 874MHz
    • 1900MHz to 1920MHz
    • 2010MHz to 2025MHz
    • 2050MHz to 2082MHz
  • MAX-PHY Digital Tx Interface with Single-Bit I and Q Bitstreams
  • Complete Two-Chip TDD-WCDMA Solution with MAX2548 Receiver
  • On-Chip Fractional-N Frequency Synthesizers for LO and Data Recovery Clock Generation
  • Operation Controlled Entirely by 3-Wire Serial Interface; No Analog Control Signals Necessary

 
  • TD-SCDMA Transmitters
  • TDD-WCDMA Handsets and Data Cards

    Key Specifications:   Femto RF Transmitters
    Part Number Applications Band/Freq (MHz) Features Footprint (mm x mm) Package RoHS Available
    MAX2598 
    Data Cards
    Handsets
    TDD-WCDMA
    TDTV Receivers
    874
    1900 to 1920
    2010 to 2025
    2050 to 2082
    Complete Digital Bits-to-RF Output TX Radio Subsystem
    Integrates 3 PAs with DACs and Fractional-N Frequency Synthesizers
    9.0 x 9.0 0/0 Yes
    See All Femto RF Transmitters (3)

    Diagram
    MAX2598: Functional Diagram
    Functional Diagram

    Evaluation Kits
    none

    Design Guides
  • Wireless (PDF)

    Reliability Reports
  • Show FIT data for:
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    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-3 of 3

    MAX2598 Free
    Sample
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    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX2598EVKIT    


    Land Pattern: Not Available

    See data sheet
    MAX2598ELB+T  
    FCLGA;64 pin;0 mm²
    Outline Drawing: 21-0167 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: L6499F+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX2598ELB+  
    FCLGA;64 pin;0 mm²
    Outline Drawing: 21-0167 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: L6499F+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
    Unique, ultra-high integration radio transmitter includes entire signal chain from digital input to final power amplifier output.

    Related Products
    MAX2547 WCDMA/HSPA Band I RF-to-Bits Femto-Basestation Radio Receiver
    MAX2599 Femto Basestation Bits-to-RF Radio Transmitter
    MAX2548 Quad-Band TDD-WCDMA RF-to-Bits Radio Receiver

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    Document Ref.: 19-1022; Rev 1; 2008-06-27
    This page last modified: 2009-02-18


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