SKY77354_13 Datasheet, PDF (1/2 Pages) Skyworks Solutions Inc. – Power Amplifier Module for Quad-Band GSM / GPRS / EDGE

PRODUCT SUMMARY
SKY77354 Power Amplifier Module for Quad-Band
GSM / GPRS / EDGE
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:
• Small, low profile package
- 5 x 3.5 mm x 0.9 mm
- 14-pad configuration
Description
SKY77354 Power Amplifier Module (PAM) is designed in a compact form factor for quad-band
cellular handsets comprising GSM850/900, DCS1800 and PCS1900, supporting fixed gain
Gaussian Minimum-Shift Keying (GMSK) and linear 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 Multi-function Power Amplifier
Control (MFC) block. A custom BiCMOS IC provides the internal MFC function and interface
circuitry.
Two separate Heterojunction Bipolar Transistor (HBT) PA blocks are fabricated onto a single
InGaP die; one supports the GSM850/900 bands, the other the DCS1800/PCS1900 bands. Both
PA blocks share common power supply pads to distribute current. The InGaP and silicon dies and
the passive components are mounted on a multi-layer laminate substrate. The entire assembly is
encapsulated with plastic overmold.
RF input and output ports of the SKY77354 are internally matched to a 50 Ω load to reduce the
number of external components. Extremely low leakage current (15 μA, typical) of the PAM
module maximizes handset standby time.
The SKY77354 also contains switching circuitry to select GSM or DCS/PCS bands and select high
or low power modes. See Figure 1 shown below.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
201799B • Skyworks Proprietary and Confidential information. • Products and product information are subject to change without notice. • September 19, 2013
1