RF3854 Datasheet | RF Micro Devices

Features - Note: The die flag is the chip's main ground. - - - - MODE D Q SIG N VREF - Applications - Functional Block Diagram - - - CDMA, GSM, and UMTS Basestation Architecture ISM Transceivers Broadband Fixed Wireless Access and Wireless Local Loop GMSK, QPSK, DQPSK, QAM Modulation Product Description The RF3854 is a low noise, multi-mode, quad-band direct I/Q to RF modulator and PA driver solution designed for digital modulation applications ranging from 800MHz to 2000MHz. Frequency doublers, dividers and LO buffers are included to support a variety of LO generation options. Dynamic power control is supported through a single analog input giving 90d B of power control range for the W-CDMA mode and 40d B of power control in the other two modes. Three sets of RF outputs are provided: high band and low band low noise EDGE/GMSK outputs, as well as one wideband W-CDMA output. The device is designed for 2.7V to 3.3V operation, and is assembled in a plastic, 24-pin, 4mmx4mm QFN. Ordering Information RF3854 RF3854PCBA-41X Low Noise, Multi-Mode, Quad-Band, Quadrature Modulator and PA Driver Fully Assembled Evaluation Board Optimum Technology Matching® Applied Ga As HBT Ga As MESFET In Ga P HBT 9Si Ge Bi CMOS Si Bi CMOS Si Ge HBT Ga As p HEMT Si CMOS Si BJT GC DEC Q SIG P - W-CDMA High/Mid/Low Power Modes Quad-Band Direct Quadrature Modulator Variable Gain PA Drivers GMSK Bypass Amplifiers LO Frequency Doubler and Divider Baseband Filtering Qualified to Infrastructure Standards LO HB P 2 GND 17 16 15 14 13 12 LO HB N 3 DIV 2 +45° -45° Σ LO LB P 4 Flo x2 +45° -45° LO LB N 5 Mode Control and Biasing Power Control MODE C 6 7 8 9 10 11 Ga N HEMT RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, Power Star®, POLARIS™ TOTAL RADIO™ and Ultimate Blue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered...