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ADL5570:  2.3 GHz TO 2.4 GHz WiMAX Power Amplifier

Product Details


Newer Alternatives:
  • ADL5606  1800 MHz TO 2700 MHz, 1 W RF Driver Amplifier

The ADL5570 is a high linearity 2.3 GHz to 2.4 GHz power amplifier designed for WiMAX terminals using TDD operation at a duty cycle of 31%. With a gain of 29 dB and an output compression point of 31 dBm at 2.35 GHz, it can operate at an output power level up to 26 dBm while maintaining an EVM of ≤3% (OFDM 16 or 64 QAM) with a supply voltage of 3.5 V. PAE is 20% @ POUT = 25 dBm.

The ADL5570 RF input is matched on-chip and provides an input return loss of less than −10 dB. The open-collector output is externally matched with strip-line and external shunt capacitance.

The ADL5570 operates over a supply voltage range from 3.2 V to 4.2 V with a supply current of 440 mA burst rms when delivering 25 dBm (3.5 V supply). A low power mode is also available for operation at power levels of ≤10 dBm with optimized operating and quiescent currents of 100 mA and 70 mA, respectively. A standby mode is available that reduces the quiescent current to 1 mA, which is useful when a TDD terminal is receiving data.

The ADL5570 is fabricated in a GaAs HBT process and is packaged in a 4 mm × 4 mm, 16-lead, Pb-free RoHS-compliant LFCSP that uses an exposed paddle for excellent thermal impedance. It operates from −40°C to +85°C.

Applications

  • WiMAX/WiBro mobile terminals
  • Data Sheet, Rev. 0, 6/07

    FEATURES and BENEFITS

    • Fixed gain of 29 dB
    • Operation from 2.3 GHz to 2.4 GHz
    • EVM ≤ 3% at POUT = 25 dBm with 16 QAM OFDMA
    • Quiescent current
      130 mA in high power mode
      70 mA in low power mode
    • Input internally matched to 50 Ω
    • Power supply: 3.2 V to 4.2 V
    • Power-added efficiency (PAE): 20%
    • Multiple operating modes to reduce battery drain
      Low power mode: 100 mA
      Standby mode: 1mA
      Sleep mode: <1 μA

    Functional Block Diagram for ADL5570

    Documentation

    Title Content Type File Type
    ADL5570: 2.3 GHz to 2.4 GHz WiMAX Power Amplifier Data Sheet (Rev 0, 06/2007) (pdf, 347 kB) Data Sheets PDF
    AN-772: A Design and Manufacturing Guide for the Lead Frame Chip Scale Package (LFCSP)  (pdf, 439 kB) Application Notes PDF
    RF Source Booklet  (PDF, 4353 kB)
    RF IC Product Overview - Version P (02/2014)
    Overview PDF
    The Highest Performance RF Amplifiers. Across the Signal Chain, analog is everywhere. Overview HTML
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    ADIsimRF
    ADI’s ADIsimRF design tool provides calculations for the most important parameters within the RF signal chain, including cascaded gain, noise figure, IP3, P1dB, and total power consumption.
    ADIsim Design/Simulation Tools HTML
    ADIsimPLL™- Version 3.43
    ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.
    ADIsim Design/Simulation Tools HTML

    Evaluation Kits & Symbols & Footprints

    Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.


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