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PDF SKY65330 Data sheet ( Hoja de datos )
| Número de pieza | SKY65330 | |
| Descripción | Tx/Rx Front-End Module | |
| Fabricantes | Skyworks Solutions | |
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PRODUCT SUMMARY
SKY65330: Tx/Rx Front-End Module with Integrated Coupler
for Quad-Band GSM and EDGE Applications
Applications
• Quad-band femto base stations and cellular repeaters for
GSM850, EGSM900, DCS1800, and PCS1900 bands
Features
• High efficiency
• Integrated coupler
• Integrated antenna switch
• Wideband envelope control path
• Input/output matching
• Saturation detection and prevention circuit
• MCM (40-pin, 6 x 6 x 0.9 mm) Pb-free (MSL3, 260 °C per
JEDEC J-STD-020) package
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances) compliant packaging.
Description
The SKY65330 is a transmit/receive Front-End Module (FEM)
designed for Skyworks Femto Base Station RF Subsystem. This
subsystem is intended for multi-band Global System for Mobile
Communications (GSM), General Packet Radio Service (GPRS),
and Enhanced Data Rate for GSM Evolution (EDGE) femto base
stations and cellular repeaters. The subsystem supports the
GSM850, EGSM900, DCS1800, and PCS1900 bands.
The SKY65330 provides a complete transmit path from
transceiver output to antenna. The module has impedance-
matching circuitry for 50 Ω inputs and outputs, and integrates
transmit harmonic filtering, an integrated coupler, and high-
linearity and low insertion-loss pHEMT RF switches. A custom
BiCMOS integrated circuit provides the internal PAC function,
interface circuitry, and decoder circuitry to control the RF
switches.
Two Heterojunction Bipolar Transistor (HBT) PA blocks are
fabricated onto an Indium Gallium Phosphide (InGaP) die; one
block supports the GSM850 and EGSM900 bands, the other
supports the DCS1800 and PCS1900 bands. Both PA blocks share
common power supply pins to distribute current. Outputs from the
PA blocks and four receive pins connect to the antenna using
pHEMT RF switches. The InGaP die, the Silicon (Si) die, the
pHEMT die, and the passive components are mounted on a multi-
layer laminate substrate, and the entire assembly encapsulated
with plastic overmold.
Three external control pins facilitate band selection, and control of
the transmit and receive RF signal flows. Pin signals BS0 and BS1
select GSM850, EGSM900, DCS1800, or PCS1900 modes. The
TR_EN pin signal selects the transmit or receive mode of the
respective RF switch. Proper timing of the pin signal logic and
power control (the VPC pin) allows high isolation between the
antenna and the radio transceiver output.
The PAC_EN signal enables the PAC circuitry to minimize battery
drain. The low leakage current (6.5 µA, typical) of the dual PA
module maximizes handset standby time.
Feedback signals from the SKY65330 to the transceiver form an
integral portion of the Skyworks Polar Loop™ architecture. This
architecture autonomously splits amplitude and phase using the
traditional analog In-Phase and Quadrature (I/Q) signals. The
filter-saving advantage of the translation-loop approach is
embedded in the architecture. Also included is an AM loop that
provides both signal AM and power level control.
A functional block diagram for the SKY65330 is shown in
Figure 1.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200926A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • July 10, 2008
1
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