Anadigics 公司的AWT6241 是HELP3TM UMTS/TD-SCDMA线性功率放大模块,采用InGAP HBT技术,单模式控制输入,工作频率在1880-1920MHz和2010-2025MHz.工作电压从3.2V到4.2V, POUT = +27.5 dBm的效率为28%,主要用在TD-SCDMA 1.8/2.0频段以及 UMTS/WCDMA IMT 2.1 GHz的无线手机和数据设备.本文介绍AWT6241主要特性,方框图和典型应用电路.

    AWT6241: HELP3TM UMTS/TD-SCDMA Linear Power Amplifier Module

    The AWT6241 HELP3TM PA is a next generation product for UMTS handsets. This PA incorporates ANADIGICS’ HELP3TM technology to provide low power consumption without the need for an external voltage regulator or DC/DC Converter. The AWT6241 is manufactured on an advanced InGaP HBT MMIC technology offering state-of-the-art reliability, temperature stability, and ruggedness. There are two operating modes for optimum efficiency at high and medium/low power output levels with a single mode input. A shutdown mode with low leakagecurrent increases handset talk and standby-time. The self-contained 3 mm x 3 mm x 1 mm surface mount package incorporates matching networks optimized for output power, efficiency, and linearity in a 50 Ω system.

    AWT6241主要特性:

    ? InGAP HBT Technology

    ? Single mode control input

    ? Internal Voltage Regulator eliminates need for external Reference Voltage (VREF)

    ? Low Leakage Current in Shutdown Mode: <1 mA

    ? Optimized for a 50 V System

    ? Low Profile RoHS Compliant Package, 250 8C MSL-3

    UMTS/WCDMA

    ? 42% @ POUT = +28.5 dBm

    ? 26% @ POUT = +17 dBm (without DC/DC Converter)

    ? Low Quiescent Current: 8 mA (in low power mode)

    ? HSDPA Compliant (no backoff required)

    TD-SCDMA MODE

    ? 38% @ POUT = +27.5 dBm

    ? 22% @ POUT = +16 dBm (without DC/DC Converter)

    AWT6241应用:

    ? Wireless Handsets and Data Devices for

    ? UMTS/WCDMA IMT 2.1 GHz band

    ? TD-SCDMA 1.8/2.0 GHz bands

    图1.AWT6241方框图

    图2.AWT6241应用电路