ADL5571:  2.5 GHz to 2.7 GHz WiMAX Power Amplifier

The ADL5571 is a high linearity 2.5 GHz to 2.7 GHz power amplifier designed for WiMAX mobile terminals and CPEs using TDD operation at a duty cycle of 50% or lower. With a gain of 29 dB and an output ...More

ADL5571:  2.5 GHz to 2.7 GHz WiMAX Power Amplifier

Product Description

The ADL5571 is a high linearity 2.5 GHz to 2.7 GHz power amplifier designed for WiMAX mobile terminals and CPEs using TDD operation at a duty cycle of 50% or lower. With a gain of 29 dB and an output compression point of 31 dBm, it can operate at an output power level up to 27 dBm while maintaining an EVM of ≤3% with a supply voltage of 5 V. PAE is 21% at POUT = 25 dBm with a 3.3 V supply voltage.

The ADL5571 RF input is matched to provide an input return loss of better than 10 dB. The open-collector output is externally matched with a microstrip line and an external shunt capacitor.

The ADL5571 operates over a supply voltage range from 3.2 V to 5 V with a current of 450 mA burst rms when delivering 25 dBm (3.3 V supply). A standby mode is available that reduces the quiescent current to 9 mA, which is useful when a TDD terminal is receiving data.

The ADL5571 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 mobile terminals and CPEs

    • Data Sheet, Rev. 0, 1/08

    Features

    • Gain: 29 dB
    • Operation from 2.5 GHz to 2.7 GHz
    • EVM ≤ 3% with 16 QAM OFDMA
      @ POUT = 25 dBm (3.3 V, 2.6 GHz)
      @ POUT = 27 dBm (5 V, 2.6 GHz)
    • Input matched to 50 Ω
    • Power supply: 3.2 V to 5 V
    • Quiescent current: 135 mA
      Power-added efficiency (PAE)
      21% @ POUT = 25 dBm (3.3 V, 2.6 GHz)
    • Multiple operating modes to reduce battery drain
      Standby mode: 9 mA
      Sleep mode: <1 μA

    Diagrams

    ADL5571 Diagram
    Functional Block Diagram for ADL5571

    Specifications

    Frequency Range (MHz) 2500 to 2700
    Gain (dB) 29dB
    Supply Current (max) 130mA
    Package 16-Lead LFCSP
    1 dB Comp Point (dBm) 31

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    AD8354 1 to 2700 19.5 19.3 4.8 4.4 25mA 900 Gain Block 8-Lead LFCSP $0.49
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    ADL5320 400 to 2700 13.7 42 25.6 4.2 104mA 2140 Driver SOT-89 $2.58
    ADL5321 2300 to 4000 14 41 26 4 100mA 2600 Driver 3-Lead SOT-89 $2.58
    ADL5322 700 to 1000 19.9 45.3 27.9 5 320mA 900 Driver 8-Lead LFCSP $3.52
    ADL5323 1700 to 2400 19.5 43.5 28 5 320mA 2140 Driver 8-Lead LFCSP $3.52
    ADL5521 400 to 4000 15.8 35 21.8 1 65mA 1950 LNA 8-Lead LFCSP $2.18
    ADL5523 400 to 4000 17 34 21.2 1 65mA 1950 LNA 8-Lead LFCSP $2.18
    ADL5530 dc to 1000 16.8 37 21.8 3 110mA 190 IFA 8-Lead LFCSP $1.58
    ADL5531 20 to 500 20.9 41 20.4 2.5 100mA 70 IFA 8-Lead LFCSP $1.87
    ADL5534 20 to 500 20 40 20.4 2.5 110mA 70 Dual IFA 16-Lead LFCSP $3.00
    ADL5541 50 to 6000 14.7 39.2 16.3 3.8 92mA 2000 Gain Block 8-Lead LFCSP $1.67
    ADL5542 50 to 6000 18.7 39 18 3.2 92mA 2000 Gain Block 8-Lead LFCSP $1.67
    ADL5570 2300 to 2400 29 - 31 - 100mA 2350 Pwr Amp w/ Power Control 16-Lead LFCSP $5.06
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    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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