PRODUCT SUMMARY CX74040: Tx ASIC for WCDMA and UMTS Applications APPLICATIONS * WCDMA FEATURES * * * * * * * VCO_TANK+ VCO_TANK- VCC_DIV I- I+ VCC_IQ_MOD Q- Q+ VGA_CTRL 40 39 38 37 36 35 34 33 32 Single battery cell operation (2.7 V < VCC < 3.3 V) Low power consumption in all operating modes Transmit power control with 90 dB dynamic range Variable gain RF block to meet Signal-to-Noise Ratio (SNR) 100 to 1200 MHz oscillator (external tank) VCO_ON feature to increase the talk time of the radio Two separate Phase Lock Loop (PLL) synthesizers: dualloop multiband operation, power-save mode for both standby and lower frequency of operation * Fully programmable PLL dividers, selectable charge-pump currents for multi-VCO applications controlled via the Serial Bus Interface * 40-pin, 6 mm x 6 mm RFLGA package with downset paddle 7 25 IF_IN- UHF_LO_SYNTH 8 24 POT_UHF_LO POT_DRV 9 23 VCC_MIXER2 UHF_LO 10 22 VCC_MIXER1 VCC_UHF 11 21 VCC_BIAS_MIX 20 IF_IN+ VCC_UHF_SYNTH VCC_BIAS_DIFF_DRV 26 19 6 VCC_DIFF_DRV DRIVER_ON UHF_CP 18 27 SEC_DRV_BYPASS 5 17 POT_MIX LD_OUT SEC_DRV_OUT 28 16 4 VCC_BIAS_SEC_DRV VCC_IF REF 15 29 RFGC 3 14 VGA_OUT- VHF_CP DATA VGA_OUT+ 30 13 31 2 12 1 VCC_VHF CLK The highly integrated super-heterodyne transmitter comprises all the critical components to implement the transmitter chain: an In-Phase and Quadrature (I/Q) modulator that accepts the analog I and Q outputs from the baseband processor and converts them to Intermediate Frequency (IF) signals; a Voltage Controlled Oscillator (VCO) and VHF synthesizer to generate the Local Oscillator (LO) signal for the quadrature demodulators; a UHF synthesizer to control the UHF oscillator; and a Variable Gain Amplifier (VGA), which is required in CDMA systems to provide a linear variable output power at the antenna. The output of the VGA is fed to the upconverter with a provision of Rx band filtering using a discrete IF filter. The output of the upconverter is fed to the power amplifier pre-driver and filtered using a bandpass filter. The output is sent to an external power amplifier to obtain the rated final output power at the antenna. The device package and pinout for the 40-pin RF Land Grid Array (RFLGATM) device is shown in Figure 1. A block diagram of the CX74040 is shown in Figure 2. VCC_CLK LATCH_ENABLE The CX74040 Application-Specific Integrated Circuit (ASIC) is a single supply, monolithic integrated circuit that incorporates all the active functional blocks required for a transmitter. It is designed for use in Wideband Code Division Multiple Access (WCDMA) and Universal Mobile Telecommunication System (UMTS) voice/data applications in the IMT-2000 frequency band. Figure 1. CX74040 Pinout - 40-Pin LGA (Top View) Skyworks Solutions, Inc. Proprietary and Confidential 103117A [781] 376-3000 I FAX [781] 376-3100 I SALES@SKYWORKSINC.COM I WWW.SKYWORKSINC.COM 1 APRIL 25 2003 RF Gain Control IF Filter UHF LO POT Mix VGA Control Product Summary I CX74040 I+ I- 90 Q+ DRIVER /2/4 Q- VHF PLL TANK UHF PLL PDout UHF VCO Lock det Ref PDout Clock En Data Control Sig Figure 2. CX74040 Tx ASIC Block Diagram Ordering Information Model Name Transmitter ASIC Manufacturing Part Number Product Revision CX74040 (c) 2002, 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 SKYWORKSTM 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. SKYWORKS SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THESE MATERIALS. SkyworksTM products are not intended for use in medical, lifesaving or life-sustaining applications. Skyworks' customers using or selling SkyworksTM products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. The following are trademarks of Skyworks Solutions, Inc.: SkyworksTM, the Skyworks symbol, SPRTM, Single Package RadioTM, and "Breakthrough Simplicity"TM. Product names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners. RFLGATM is a trademark of Conexant Systems, Inc. Additional information, posted at www.skyworksinc.com, is incorporated by reference. General Information Skyworks Solutions, Inc. 20 Sylvan Rd. Woburn, MA 01801 www.skyworksinc.com 2 APRIL 25 2003 Skyworks Solutions, Inc. Proprietary and Confidential [781] 376-3000 I FAX [781] 376-3100 I SALES@SKYWORKSINC.COM I WWW.SKYWORKSINC.COM 103117A