BCM2002X PRODUCT Brief ® BCM2002X 2.4 GHZ BLUETOOTHTM FRAC-N RADIO B C M 2 0 0 2 X S U M M A R Y F E AT U R E S • BQB qualified Bluetooth V1.1 radio transceiver frequency generation • •Fractional-N Supports 12, 13, 19.2, 19.68, or 19.8 MHz reference O F B E N E F I T S for mobile phone integration • Ideal • Designed to handle the very harsh environment of mobile phones while maintaining high radio performance and optimizing overall phone performance. • In-band and out-of-band blocking performance significantly exceeds Bluetooth requirements. • Fractional-N frequency generation technology eliminates the need for a dedicated reference crystal, which is an additional source of RF noise. frequencies • Differential RF interface -80 dBm receiver sensitivity under high • Typical interference environments +3 dBm RF output power satisfied • Typical requirements for Class 2 operation spurious emissions performance • •Strong Minimal filtering required to meet mobile phone integration Monolithic implementation in a standard digital • CMOS process with minimal external components requirements • blocking performance • •Excellent Minimal filtering required to meet mobile phone integration requirements • Highly linear receiver exceeds Bluetooth specifications Meets FCC radiated emissions requirements without • RF filtering or shielding Low • power consumption • Built-in digital RSSI • Programmable PA gain • 8mm x 8mm, 52-pin LPCC standard package • provides a manufacturable low-cost Bluetooth RF/IF solution. On-chip auto-calibration eliminates process variation across components and mitigates temperature variation, enabling the chips to be used in high-volume mobile phone applications. The BlueRF RXMODE2 unidirectional baseband interface supports connection to a wide variety of baseband devices. Applications: • • GSM, CDMA, GPRS, and WCDMA mobile phones BCM2002X BlueRF Frac-N Radio Application Example Baseband Device BRCLK TX CLK BRXD FSK D BTXD TX D BPKTCTRL SL CTR L BPAEN PA RAMP BRXEN RX PU BTXEN BSEN BXTLEN TX PU SYNTH PU Ext Clk (from Mobile Phone) BCM2002X XTAL PU BnPWR BPWR BMISO SRI DO BMOSI SRI DI BOCLK SRI C BnDEN SRI E Loop Filters B C M 2 0 0 2 X O V E R V I E W BCM2002X Functional Block Diagram RF Input Demodulator Bit Slicer LO Generation Digital Output Frac-N PLL Loop Filter RF Output Modulator Calibration The BCM2002X is a Bluetooth 1.1 compliant integrated radio transceiver device operating in the 2.4 GHz band. It is ideal for integration in mobile phone applications where the radio has been designed to handle the harsh environments of mobile phones to provide the highest communication link quality of service. The BCM2002X uses fractional-N frequency generation technology to synthesize the different reference frequencies for mobile phone applications. The fractional-N technology eliminates the need for a dedicated reference crystal, which lowers BOM cost and eliminates an additional RF noise source. The receiver front-end consists of a low-noise amplifier and an image reject mixer. Balanced mixer structures fed by accurate quadrature LO signals allow an excellent noise figure and strong image rejection. Control Interface Digital Input Control I/F (BlueRF) A low IF frequency allows for high performance amplifier and filter designs in CMOS. The bandpass filter structure features self-calibration circuitry that automatically adjusts circuit elements to compensate for any process variation. This eliminates tuning and ensures that process and temperature variation are uniform across the devices. The IF amplifiers provide a limiting function so that the following stages always get a constant signal level regardless of the RF input level. An RSSI signal is also generated in these amplifiers for the system to determine signal strength. The signal is then filtered further, demodulated, and finally sent to a bit slicer to generate logic level data output. The BCM2002X is controlled via a BlueRF unidirectional interface. BlueRF is a Bluetooth industry-standard specification that provides compatibility between Bluetooth RF and baseband chips. This interface provides control for the various sections of the chip, defines data transfers and allows access to the various internal registers of the device. Broadcom®, the Pulse logo®, and Connecting everything® are trademarks of Broadcom Corporation and/or its affiliates in the United States and certain other countries. All other trademarks mentioned are the property of their respective owners. ® BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 © 2003 by BROADCOM CORPORATION. All rights reserved. 2002X-PB04-R-06.13.03 Phone: 949-450-8700 FAX: 949-450-8710 Email: [email protected] Web: www.broadcom.com