BGY284

www.DataSheet4U.com DISCRETE SEMICONDUCTORS DATA SHEET BGY284 power amplifier with integrated control loop for GSM850, EGSM900, DCS1800 & PCS1900 Preliminary specification 2003 Aug 20 Philips Semiconductors Preliminary specification power amplifier with integrated control loop for GSM850, EGSM900, DCS1800 & PCS1900 FEATURES Quad band GSM amplifier Very small size (8 x 8 mm). Suited for GPRS class 12 (duty cycle 4 : 8) Integrated power control loop 3.5 V nominal supply voltage 35 dBm controlled output power for GSM850/EGSM900 32.5 dBm controlled output power for DCS1800/PCS1900 Easy on/off and band select by digital control voltage Internal input and output matching Specification based on 3GPP TS 45.005. APPLICATIONS BGY284 Digital cellular radio systems with Time Division Multiple Access (TDMA) operation (GSM systems) in four frequency bands: 824 to 849 MHz, 880 to 915 MHz, 1710 to 1785 MHz and 1850 to 1910 MHz. DESCRIPTION The BGY284 is a power amplifier module in a SOT775 surface mounted package with a plastic cap. The module consists of two separated line-ups, one for low band (LB,GSM850/EGSM900) and one for high band (HB, DCS1800/PCS1900) with internal power detection function, power control loop, input and output matching. See the simplified internal circuit on page 4. The power control circuit ensures a stable power output set by the level of VDAC and stabilised to compensate variations of supply voltage, input power and temperature, with a...