BGY284 Просмотр технического описания (PDF) - Philips Electronics

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производитель

BGY284

power amplifier with integrated control loop for GSM850, EGSM900, DCS1800 & PCS1900

Philips Electronics 

Philips Semiconductors

power amplifier with integrated control loop for

GSM850, EGSM900, DCS1800 & PCS1900

Preliminary specification

BGY284

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

• 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 control range fully compliant with ETSI time mask and power

spectrum requirements

QUICK REFERENCE DATA

RF performance at Tmb = 25 °C (mounting base temperature); VBAT = 3.5 V; VSTAB = 2.8 V; ZS = ZL = 50 Ω;

PD = 0 dBm; δ = 2:8

MODE OF OPERATION

f

(MHz)

PL

(dBm)

η

(%)

824 to 849

34

50

880 to 915

34

50

Typical pulsed, controlled output power

1710 to 1785

31.3

45

1850 to 1910

31.3

45

2003 Aug 20

2

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