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CX74063-26 Datasheet(PDF) 1 Page - Skyworks Solutions Inc.

Part No. CX74063-26
Description  RF Transceiver for Multi-Band GSM, GPRS, and EDGE Applications with Power Ramping Controller and Integrated Crystal Oscillator with 26 MHz Output
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Maker  SKYWORKS [Skyworks Solutions Inc.]
Homepage  http://www.skyworksinc.com

CX74063-26 Datasheet(HTML) 1 Page - Skyworks Solutions Inc.

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Skyworks Solutions, Inc., Proprietary and Confidential
MAY 16, 2003
CX74063-26: RF Transceiver for Multi-Band GSM, GPRS, and
EDGE Applications with Power Ramping Controller and
Integrated Crystal Oscillator with 26 MHz Output
GSM850, EGSM900, DCS1800, and PCS1900 handsets
GPRS handsets and modules
EDGE downlink support
Direct down-conversion receiver eliminates the external
image reject/IF filters
Three separate LNAs with single-ended inputs
RF gain range: GSM = 20 dB, DCS = 22 dB,
PCS = 20 dB. Baseband gain range = 100 dB
Gain selectable in 2 dB steps
Integrated receive baseband filters with tunable bandwidth
Integrated DC offset correction sequencer
Reduced filtering requirements with translational loop
transmit architecture
Integrated transmit VCOs
Wide RF range for quad band operation
Integrated PAC loop
Single integrated, fully programmable fractional-N
synthesizer suitable for multi-slot GPRS operation
Fully integrated wideband Ultra High Frequency (UHF) VCO
Integrated crystal oscillator
Separate enable lines for power management transmit,
receive, and synthesizer modes
Supply voltage down to 2.6 V
Band select and front-end enable states may be exercised
on output pins to control external circuitry
Low external component count
Optional bypass of baseband filtering for use with high
dynamic range Analog to Digital Converters (ADCs) for
current savings
Interfaces to low dynamic range ADC
Meets AM suppression requirements without baseband
56-pin RFLGA 8x8 mm package
Low power standby mode
The CX74063-26 transceiver is a highly integrated device for
multi-band Global System for Mobile Communications™
(GSM™) or General Packet Radio Service (GPRS) applications.
The device requires a minimal number of external components
to complete a GSM radio subsystem. The CX74063-26
supports GSM850, EGSM900, DCS1800, and PCS1900
applications. The receiver also supports downlink Enhanced
Data-Rate GSM Evolution (EDGE).
The receive path implements a direct down-conversion
architecture that eliminates the need for Intermediate
Frequency (IF) components. The CX74063-26 receiver consists
of three integrated Low Noise Amplifiers (LNAs), a quadrature
demodulator, tunable receiver baseband filters, and a
DC-offset correction sequencer.
In the transmit path, the device consists of an In-phase and
Quadrature (I/Q) modulator within a frequency translation loop
designed to perform frequency up-conversion with high output
spectral purity. This loop also contains a phase-frequency
detector, charge pump, mixer, programmable dividers, and
high power transmit Voltage Controlled Oscillators (VCOs) with
no external tank required. With the integrated gain controller
(and an integrator ), the device realizes the Power Amplifier
Control (PAC) functionality when combined with a coupler, a
Radio Frequency (RF) detector and a Power Amplifier (PA).
The CX74063-26 also features an integrated, fully
programmable, sigma-delta fractional-N synthesizer suitable
for GPRS multi-slot operation. Except for the loop filter, the
frequency synthesizer function, including a wideband VCO, is
completely on-chip. The reference frequency for the
synthesizer is supplied by the integrated crystal oscillator
The 56-pin 8x8 RF Land Grid Array (RFLGA™) device package
and pin configuration are shown in Figure 1. A functional block
diagram is shown in Figure 2. Signal pin assignments,
functional pin descriptions, and equivalent circuitry are
provided in Table 1.

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