BGY288 Datasheet, PDF (1/22 Pages) NXP Semiconductors – Power amplifier with integrated control loop for GSM850, EGSM900, DCS1800 and PCS1900

BGY288
Power amplifier with integrated control loop for GSM850,
EGSM900, DCS1800 and PCS1900
Rev. 01 — 2 February 2005
Preliminary data sheet
1. Product profile
1.1 General description
The BGY288 is a power amplifier module in a SOT775 surface mounted package with a
plastic cap. In the module, a mix of state of the art technologies as InGaP, Si-Bicmos and
Si passive integration are used to combine high performance with a small size. The
module comprises two functional sections, one for low-band (GSM850/EGSM900) and
one for high-band (DCS1800/PCS1900) with internal power detection, power control loop,
input and output matching; see Figure 2. The power control circuit ensures a stable RF
power output which is set by the voltage level on pin PC. The power control circuit is
stabilized to compensate for variations in supply voltage, input power and temperature,
and has a control range fully compliant with European Telecommunication Standards
Institute (ETSI) time mask and power spectrum requirements.
1.2 Features
1.2.1 General features
s Quad band GSM amplifier
s 34 dBm controlled output power for
GSM850/EGSM900
s Suited for GPRS class 12
(duty cycle δ = 4 : 8)
s Integrated power control loop
s 3.6 V nominal supply voltage
s Very small size (8 mm × 8 mm)
s 32.5 dBm controlled output power for
DCS1800/PCS1900
s Easy on/off and band select by digital
control voltage
s Internal input and output matching
s Specification based on 3GPP TS 45.005
1.2.2 RF performance
RF performance with a typical pulsed, controlled output power at T_mb = 25 °C;
V_BAT = 3.6 V; V_STAB = 2.8 V; Z_S = Z_L = 50 Ω; P_D(LB) = 2 dBm / P_D(HB) = 0 dBm; δ = 2 : 8.
s f = 824 MHz to 849 MHz; η @ P_SAT = 50 %; P_L = 34 dBm
s f = 880 MHz to 915 MHz; η @ P_SAT = 55 %; P_L = 34 dBm
s f = 1710 MHz to 1785 MHz; η @ P_SAT = 50 %; P_L = 32.5 dBm
s f = 1850 MHz to 1910 MHz; η @ P_SAT = 50 %; P_L = 32.5 dBm
1.3 Applications
s Digital cellular radio systems with Time Division Multiple Access (TDMA) operation
(GSM systems) in four frequency bands: 824 MHz to 849 MHz, 880 MHz to 915 MHz,
1710 MHz to 1785 MHz and 1850 MHz to 1910 MHz.