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PDF CX20524 Data sheet ( Hoja de datos )
| Número de pieza | CX20524 | |
| Descripción | Mixed Signal Device for GSM and GPRS Applications | |
| Fabricantes | Skyworks | |
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PRODUCT SUMMARY
CX20524 Mixed Signal Device for GSM and GPRS
Applications
Applications
Description
• GSM handsets and modules (850/900/1800/1900 MHz)
• GPRS handsets and modules (850/900/1800/1900 MHz)
The CX20524 Mixed Signal Device (MSD) is a highly integrated
device designed for use in multi-band Global System for
Mobile communications (GSM) and General Packet Radio
Features
• Supports multi-slot GPRS up to Class 12
• Σ∆ Analog-to-Digital Converters (ADCs) for digitization of
baseband receive signal
• Receive path PGA for AGC of received signal
• GMSK Digital Modulator
• Digital-to-Analog Converters (DACs) for analog conversion of
the GMSK modulator output
Service (GPRS) handsets. The MSD includes all the power
management, voice-band, mixed signal, and radio control
functions required in a GSM/GPRS handset and module.
In the receive path, the MSD digitizes the baseband In-
Phase/Quadrature (I/Q) inputs. Digital samples are then sent to
the Baseband Processor (BP) via the Rx serial interface. The
receive path features a programmable gain amplifier (PGA) for
Automatic Gain Control (AGC) of the receive signal.
• Transmit power ramping and power level control
In the transmit path, bursts of digital data are input to the MSD
• Low noise voiceband ADC for direct interface to handset and
over the control port. A Gaussian Minimum-Shift Keying
headset microphone
(GMSK) modulator generates modulated I and Q waveforms
• Low noise voiceband DAC for direct interface to handset and
from the input data. The I and Q waveforms are converted into
headset speaker
analog waveforms and output from the MSD.
• Auxiliary 8-bit ADC for monitoring system signals
• 3 V/1.8 V SIM card interface
DataSheet4UT.cheomCX20524 generates an analog signal to control the
handset Power Amplifier (PA) output level.
• Temperature sensor
• High speed asynchronous serial ports for interface to
The device voiceband Codec section provides an interface to a
Skyworks Baseband Processor device
32 Ω handset speaker and microphone. Line In/Out signals are
• Low speed asynchronous serial port for power management
also available to interface with audio accessories, such as a
functions
headset or car kit.
• Voltage regulators for both internal (fixed voltage) and
The MSD is designed to operate directly from a single cell,
system (programmable voltage) needs
3.6 V Li Ion battery with no external regulation required. The
• Low power operation
MSD integrates all necessary Low Drop Out (LDO) voltage
• Control circuit for multi-chemistry advanced battery charger
regulators that generate the required device and system power
• Power-On Reset (POR) generation
supplies from battery input.
• Over current-limiting
• Power On/Off control inputs
• CX20524-12: 160-pin FPBGA 12 mm x 12 mm package
• CX20524-13: 180-pin FPBGA 10 mm x 10 mm package
An integrated SIM interface circuit allows direct interface to 3.0
V and 1.8 V SIM cards with no external components.
An integrated battery charger control circuit provides charging
capabilities for multi-chemistry batteries.
The CX20524-12 is packaged in a compact, 160-pin (12 mm x
12 mm) Fine Pitch Ball Grid Array (FPBGA), shown in Figure 2.
The CX20524-13 is packaged in a compact, 180 pin 10 mm x
10 mm, 0.5 mm pitch, Fine Pitch Ball Grid Array (FPBGA),
shown in Figure 3.
DataShee
DataSheet4U.com
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
103177A • Skyworks Proprietary and Confidential information. • Products and product information are subject to change without notice. • April 2, 2004
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| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet CX20524.PDF ] | |
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