News | May 6, 2009

Avago Announces CDMA Cell-Band And PCS Front End Modules For Mobile Handsets

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Avago Technologies, a leading supplier of interface components for communications, industrial and consumer applications, recently announced two new front end modules (FEMs) that incorporate a power amplifier (PA), duplexer, band-pass filter and coupler to improve efficiency and extend talk time in mobile handsets. Avago's AFEM-775x series includes Avago's CoolPAM and Film Bulk Acoustic Resonator (FBAR) technologies to improve performance in CDMA cell band and dual-band handsets, wireless PDAs and wireless data cards.

The AFEM-775x series are fully matched CDMA FEMs, which are designed to minimize power consumption with three power modes (high power, mid-power and bypass modes). Additionally, the CoolPAM-V technology incorporated in these modules does not require a DC-DC converter which helps save cost and space in handset designs. Moreover, the power amplifier is manufactured based on advanced hetero-junction bipolar transistor (InGaP HBT) technology which offers state-of-the-art reliability and ruggedness.

Avago's AFEM-7758 is an FBAR-based duplexer that provides low insertion and outstanding isolation to minimize Tx leakage in both Rx and Tx bands over a wide temperature range. It also improves handset receiver sensitivity and single tone desensitization performance. Moreover, the optimized matching between the PA and duplexer eliminates the need for a bulky and costly isolator.

Key Features

  • Integrated duplexer, power amplifier, band-pass filter and coupler
  • Operating frequencies:
    • AFEM-7750 – Tx: 824 to 894 MHz Rx: 869 to 894 MHz
    • AFEM-7758 - TxZ: 1850 to 1910 MHz Rx: 1930 to 1990 MHz
  • 25 dBM linear output power @ 3.4V
  • High-power, low power and bypass modes
    • High power > 15dBm
    • Mid-power > 8dBm
    • Very low quiescent current in Bypass mode
    • High mid-power efficiency in min-power mode
  • 3.2 – 4.2V linear operation
  • High isolation (Low Tx leakage at Rx port)
  • CDMA 2000 1xRTT capable
  • No DC-DC converter needed
  • 50 ohm input and output matching
  • 4 by 7 by 1.1mm SMT package

About Avago Technologies
Avago Technologies is a leading supplier of analog interface components for communications, industrial and consumer applications. By leveraging its core competencies in III-V compound and silicon semiconductor design and processing, the company provides an extensive range of analog, mixed signal and optoelectronics components and subsystems to approximately 40,000 end customers. Backed by strong customer service support, the company's products serve four diverse end markets: industrial and automotive electronics, wired infrastructure, wireless communications, and consumer and computer peripherals. Avago has a global employee presence and heritage of technical innovation dating back 40 years to its Hewlett-Packard roots. For more information, visit: www.avagotech.com.

SOURCE: Avago Technologies