PRODUCT SUMMARY CX20505-14 Integrated Analog Device for GSM and GPRS Applications Introduction APPLICATIONS • • Global System for Mobile communications™ (GSM™) and General Packet Radio Service (GPRS) Multiband Handsets GSM and GPRS Data Modules FEATURES • • • • • • • • • • • • • • Supports Multi-slot GPRS up to Class 10 Σ∆ Analog-to-Digital Converters (ADCs) for digitization of baseband receive signal Receive path Programmable Gain Amplifier (PGA) for Automatic Gain Control (AGC) of received signal Burst Store Random Access Memory (RAM) for storage of transmit data bursts Gaussian Minimum-Shift Keying (GMSK) Digital Modulator for modulation of Burst Store contents Digital-to-Analog Converters (DACs) for analog conversion of the GMSK modulator output Transmit power ramping and power level control Low noise, voice-band ADC for interface to handset microphone Low noise voice-band DAC for interface to handset speaker Auxiliary 8-bit ADC for monitoring system signals such as battery voltage High speed serial ports for interface to a Baseband Processor device Internal power supply regulation from a single input voltage Temperature Sensor for system thermal monitoring 104-pin 10 mm x 10 mm FPBGA package 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... . 103186A Skyworks Solutions, Inc., Proprietary and Confidential [781] 376-3000fax [781] 376-3100[email protected]www.skyworksinc.com 1 September 22, 2003 CX20505-14 Product Summary Vpwr PAC Battery CX20526/CX20460 VCCD Tx CX74017 VRF VSIM RX Interface Control CX77304 ... CX20505 Memory Control Interface Rx Voiceband Interface Microphone User Interface CD, Keypad, etcetera CX805 CX815 Data Ports Speaker Figure 1. Typical CX20505-14 Application in a Handset Design A1 Ball Pad Corner 10.00 mm 12 11 10 9 8 7 6 5 4 3 2 1 A B C D 10.00 mm E 0.8 mm F G H J K L M Top View 0.8 mm 0.46 mm Bottom View Figure 2. CX20505-14 Device Package Dimensions 2 September 22, 2003 Skyworks Solutions, Inc., Proprietary and Confidential [781] 376-3000fax [781] 376-3100[email protected]www.skyworksinc.com 103186A CX20505-14 Product Summary Ordering Information Model Name Manufacturing Part Number CX20505-14 © 2003, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. ("Skyworks") products. These materials are provided by Skyworks as a service to its customers and may be used for informational purposes only. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its products, specifications and product descriptions at any time, without notice. Skyworks makes no commitment to update the information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from future changes to its products and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as may be provided in Skyworks’ Terms and Conditions of Sale for such products, Skyworks assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF SKYWORKS™ PRODUCTS INCLUDING WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. SKYWORKS FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. 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Additional information, posted at www.skyworkssolutions.com, is incorporated by reference. 103186A September 22, 2003 Skyworks Solutions, Inc., Proprietary and Confidential [781] 376-3000fax [781] 376-3100[email protected]www.skyworksinc.com 3 General Information: Skyworks Solutions, Inc. 20 Sylvan Road. Woburn, MA 01801 www.skyworksinc.com