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 at 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;
Four by 7 by 1.1mm SMT package.
