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SKY77336

Skyworks Solutions
Part Number SKY77336
Manufacturer Skyworks Solutions
Description Power Amplifier Module
Published Mar 18, 2010
Detailed Description PRELIMINARY DATA SHEET SKY77336 Power Amplifier Module for Quad-Band GSM / GPRS Applications • Quad-band cellular hands...
Datasheet PDF File SKY77336 PDF File

SKY77336
SKY77336

Overview
PRELIMINARY DATA SHEET SKY77336 Power Amplifier Module for Quad-Band GSM / GPRS Applications • Quad-band cellular handsets • GMSK Modulation - Class 4 GSM850/900 - Class 1 DCS1800/ PCS1900 - Class 12 GPRS multi-slot operation • EDGE modulation - Class E2 GSM850/900 - Class E2 DCS1800/ PCS1900 Features • High efficiency: - GSM850, 55% - GSM900, 55% - DCS, 53% - PCS, 53% • Small outline - 5 x 5 mm • Low profile - 1.
15 mm Max • Low VRAMP current - 10 μA Description SKY77336 Power Amplifier Module (PAM) is designed in a compact form factor for quad-band cellular handsets comprising GSM850/900, DCS1800 and PCS1900, supporting Gaussian Minimum-Shift Keying (GMSK) and Polar Enhanced Data for GSM Evolution (EDGE) modulation.
Class 12 General Packet Radio Service (GPRS) multi-slot operation is also supported.
The module consists of GSM850/900 PA and DCS1800/PCS1900 PA blocks, impedance matching circuitry for 50 Ω input and output impedances, and a Power Amplifier Control (PAC) block.
The custom CMOS integrated circuit provides the internal PAC function and interface circuitry.
Fabricated in InGaP/GaAs, the Heterojunction Bipolar Transistor (HBT) PA blocks support the GSM850/900 bands and DCS1800/PCS1900 bands.
Both PA blocks share common power supply pads to distribute current.
The InGaP/GaAs die, Silicon (Si) controller die, and passive components are mounted on a multi-layer laminate substrate and the entire assembly is encapsulated with plastic overmold.
RF input and output ports of the SKY77336 are internally matched to a 50 Ω load to reduce the number of external components for a quad-band design.
Extremely low leakage current (10 μA, typical) of the PAM module maximizes handset standby time.
The SKY77336 also contains band-select switching circuitry to select GSM (logic 0) or DCS/PCS (logic 1) as determined from the Band Select (BS) signal.
See Figure 1 shown below.
Figure 1.
SKY77336 Functional Block Diagram Skyworks Solutions, Inc.
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