CX20505-14 ETC ETC, CX20505-14 Datasheet

CX20505-14

Manufacturer Part Number

CX20505-14

Description

CX20505-14Integrated Analog Device for GSM and GPRS Applications

Manufacturer

ETC ETC

Datasheet

1.CX20505-14.pdf (4 pages)

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PRODUCT SUMMARY

CX20505-14 Integrated Analog Device for GSM and GPRS

Applications

APPLICATIONS

•

FEATURES

•

103186A

and General Packet Radio Service (GPRS) Multiband

Handsets

baseband receive signal

Automatic Gain Control (AGC) of received signal

transmit data bursts

for modulation of Burst Store contents

of the GMSK modulator output

microphone

speaker

battery voltage

Processor device

voltage

Global System for Mobile communications™ (GSM™)

GSM and GPRS Data Modules

Supports Multi-slot GPRS up to Class 10

Σ∆ Analog-to-Digital Converters (ADCs) for digitization of

Receive path Programmable Gain Amplifier (PGA) for

Burst Store Random Access Memory (RAM) for storage of

Gaussian Minimum-Shift Keying (GMSK) Digital Modulator

Digital-to-Analog Converters (DACs) for analog conversion

Transmit power ramping and power level control

Low noise, voice-band ADC for interface to handset

Low noise voice-band DAC for interface to handset

Auxiliary 8-bit ADC for monitoring system signals such as

High speed serial ports for interface to a Baseband

Internal power supply regulation from a single input

Temperature Sensor for system thermal monitoring

104-pin 10 mm x 10 mm FPBGA package

[781] 376-3000fax [781] 376-3100sales@skyworksinc.comwww.skyworksinc.com

Skyworks Solutions, Inc., Proprietary and Confidential

Introduction

The CX20505-14 Integrated Analog (IA) is a highly integrated

device designed for use in multi-band GSM and GPRS

handsets. This device implements all the voice-band, mixed

signal, and radio control functions in a GSM/GPRS handset.

In the receive path, the CX20505-14 digitizes the baseband

In-Phase/Quadrature (I/Q) input, and outputs the digital

samples on the device receive port. The receive path features

a PGA for AGC of the receive signal.

In the transmit path, bursts of digital data are input to the

device over the control port. The GMSK modulator generates

modulated I and Q waveforms from the input data. The I and Q

waveforms are converted into analog waveforms and output

from the device.

The CX20505-14 generates an analog signal to control the

handset Power Amplifier (PA) output level. The signal is then

input to the Power Amplifier Control (PAC) circuit.

The voice-band Codec section provides an interface to a 32 Ω

handset speaker and microphone. Line In/Out signals are also

available for interfacing to audio accessories such as a headset

or car kit.

The device operates directly from a single cell, 3.6 V Li Ion

battery with no external regulation required. The device

features Low Drop Out (LDO) voltage regulators that generate

the required device power supplies from the battery input.

A typical CX20505-14 application in a handset design is shown

in Figure 1. The device is packaged in a compact, 104-pin

(10mm x 10mm) Fine Pitch Ball Grid Array (FPBGA) see

Error! Reference source not found...

September 22, 2003

Related parts for CX20505-14

CX20505-14 Summary of contents

Page 1

... Low Drop Out (LDO) voltage regulators that generate the required device power supplies from the battery input. A typical CX20505-14 application in a handset design is shown in Figure 1. The device is packaged in a compact, 104-pin (10mm x 10mm) Fine Pitch Ball Grid Array (FPBGA) see Error! Reference source not found ...

Page 2

... CX20505-14 Product Summary CX77304 Figure 1. Typical CX20505-14 Application in a Handset Design A1 Ball Pad Corner 10.00 mm Top View 2 September 22, 2003 [781] 376-3000fax [781] 376-3100sales@skyworksinc.comwww.skyworksinc.com PAC Tx CX74017 Control CX20505 Rx Microphone Speaker Figure 2. CX20505-14 Device Package Dimensions Skyworks Solutions, Inc ...

Page 3

... Third-party brands and names are the property of their respective owners. Additional information, posted at www.skyworkssolutions.com, is incorporated by reference. 103186A September 22, 2003 [781] 376-3000fax [781] 376-3100sales@skyworksinc.comwww.skyworksinc.com Model Name Manufacturing Part Number Skyworks Solutions, Inc., Proprietary and Confidential CX20505-14 Product Summary 3 ...

Page 4

General Information: Skyworks Solutions, Inc. 20 Sylvan Road. Woburn, MA 01801 www.skyworksinc.com ...

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