Datasheet ADF4602 (Analog Devices) - 3

ADF4602 GENERAL DESCRIPTION
The ADF4602 is a 3G transceiver integrated circuit (IC) coupled with the multiband LNA input structure, allows offering unparalleled integration and feature set. The IC is GSM-EDGE signals to be monitored as part of a UMTS home ideally suited to high performance 3G femtocells providing base station. cellular fixed mobile converged (FMC) services. With only a The transmitter uses an innovative direct conversion modulator handful of external components, a full multiband transceiver that achieves high modulation accuracy with exceptionally low is implemented. noise, eliminating the need for external transmit SAW filters. UMTS Band I through Band VI and Band VIII through Band X The fully integrated phase lock loops (PLLs) provide high are supported in a single device. performance and low power fractional-N frequency synthesis The receiver is based on a direct conversion architecture. This for both receive and transmit sections. Special precautions have architecture is the ideal choice for highly integrated wideband been taken to provide the isolation demanded by frequency CDMA (WCDMA) receivers, reducing the bill of materials by division duplex (FDD) systems. All VCO and loop filter fully integrating all interstage filtering. The front end includes components are fully integrated. three high performance, single-ended low noise amplifiers The ADF4602 also contains on-chip low dropout voltage (LNAs), allowing the device to support tri-band applications. regulators (LDOs) to deliver regulated supply voltages to the The single-ended input structure eases interface and reduces functions on chip, with an input voltage of between 3.1 V the matching components required for small footprint single- and 3.6 V. ended duplexers. The excellent device linearity achieves good performance with a large range of SAW and ceramic filter The IC is controlled via a standard 3-wire serial interface with duplexers. advanced internal features allowing simple software programming. Comprehensive power-down modes are included to minimize The integrated receive baseband filters offer selectable power consumption in normal use. bandwidth, enabling the device to receive both WCDMA and GSM-EDGE radio signals. The selectable bandwidth filter, Rev. A | Page 3 of 36 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY GENERAL DESCRIPTION SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION TRANSMITTER DESCRIPTION I/Q Baseband I/Q Modulator VCO Output TX Output Baluns DACS GENERAL PURPOSE OUTPUTS RECEIVER DESCRIPTION LNAs Mixers Baseband Section Gain Control DC Offset Compensation POWER MANAGEMENT FREQUENCY SYNTHESIS Reference Path SERIAL PORT INTERFACE (SPI) Format OPERATION AND TIMING Read REGISTERS REGISTER MAP REGISTER DESCRIPTION SOFTWARE INITIALIZATION PROCEDURE INITIALIZATION SEQUENCE Nonvolatile Memory (NVM) Initialization Programming Transmit and Receive frequencies APPLICATIONS INFORMATION INTERFACING THE ADF4602 TO THE AD9963 AD9963 ADC Inputs Interfacing to the AD9963 Rx Baseband Inputs AD9963 DAC Outputs Reference Voltage Current Scaling Resistor, RSET Gain Scaling Parameters RECEIVE SENSITIVITY Interfacing to the AD9963 TX Baseband Outputs OUTLINE DIMENSIONS ORDERING GUIDE