1200 MHz to 3600 MHz Rx Mixer with Integrated Fractional-N PLL and VCO Data Sheet ADRF6604 The PLL can support input reference frequencies from 12 MHz FEATURES to 160 MHz. The PFD output controls a charge pump whose Rx mixer with integrated fractional-N PLL output drives an off-chip loop filter. RF input frequency range: 1200 MHz to 3600 MHz Internal LO frequency range: 2500 MHz to 2900 MHz The loop filter output is then applied to an integrated VCO. The Input P1dB: 14.5 dBm VCO output at 2 f is applied to an LO divider, as well as to a LO Input IP3: 27.5 dBm programmable PLL divider. The programmable PLL divider is IIP3 optimization via external pin controlled by a sigma-delta (-) modulator (SDM). The modulus SSB noise figure of the SDM can be programmed from 1 to 2047. IP3SET pin open: 14.3 dB The active mixer converts the single-ended, 50 RF input to IP3SET pin at 3.3 V: 15.5 dB a differential, 200 IF output. The IF output can operate up Voltage conversion gain: 6.8 dB to 500 MHz. Matched 200 IF output impedance The ADRF6604 is fabricated using an advanced silicon-germanium IF 3 dB bandwidth: 500 MHz BiCMOS process. It is available in a 40-lead, RoHS-compliant, Programmable via 3-wire SPI interface 6 mm 6 mm LFCSP with an exposed paddle. Performance is 40-lead, 6 mm 6 mm LFCSP specified over the 40C to +85C temperature range. APPLICATIONS Table 1. Cellular base stations Internal LO 3 dB RFIN 1 dB RFIN Part No. Range Balun Range Balun Range GENERAL DESCRIPTION ADRF6601 750 MHz 300 MHz 450 MHz The ADRF6604 is a high dynamic range active mixer with 1160 MHz 2500 MHz 1600 MHz integrated phase-locked loop (PLL) and voltage controlled ADRF6602 1550 MHz 1000 MHz 1350 MHz oscillator (VCO). The PLL/synthesizer uses a fractional-N 2150 MHz 3100 MHz 2750 MHz PLL to generate a fLO input to the mixer. The reference input ADRF6603 2100 MHz 1100 MHz 1450 MHz can be divided or multiplied and then applied to the PLL phase 2600 MHz 3200 MHz 2850 MHz frequency detector (PFD). ADRF6604 2500 MHz 1200 MHz 1600 MHz 2900 MHz 3600 MHz 3200 MHz FUNCTIONAL BLOCK DIAGRAM VCC1 VCC2 VCC LO VCC MIX VCC V2I VCC LO NC NC 1 10 17 22 27 34 32 33 36 LODRV EN ADRF6604 3.3V 2 DECL3P3 INTERNAL LO RANGE LDO LON 37 2500MHz TO 2900MHz BUFFER 2.5V 9 DECL2P5 LDO LOP 38 BUFFER VCO PLL EN 16 DIV 40 2:1 DECLVCO LDO BY FRACTION INTEGER MUX DATA 12 MODULUS 2, 1 REG REG SPI CLK 13 INTERFACE LE 14 26 RF THIRD-ORDER IN FRACTIONAL INTERPOLATOR VCO 29 IP3SET CORE 2 N COUNTER PRESCALER 21 TO 123 2 REF IN 6 MUX CHARGE PUMP 2 PHASE 250A, + FREQUENCY 500A (DEFAULT), 4 TEMP DETECTOR 750A, SENSOR 1000A MUXOUT 8 4 7 11 15 20 21 23 24 25 28 30 31 35 5 3 39 18 19 R CP VTUNE IFP IFN SET GND Figure 1. Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20102014 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 08553-001ADRF6604 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Register 3- Modulator Dither Control (Default: 0x10000B) ................................................................... 17 Applications ....................................................................................... 1 Register 4PLL Charge Pump, PFD, and Reference Path General Description ......................................................................... 1 Control (Default: 0x0AA7E4) ................................................... 18 Functional Block Diagram .............................................................. 1 Register 5PLL Enable and LO Path Control Revision History ............................................................................... 2 (Default: 0x0000E5) ................................................................... 19 Specifications ..................................................................................... 3 Register 6VCO Control and VCO Enable RF Specifications .......................................................................... 3 (Default: 0x1E2106) ................................................................... 19 Synthesizer/PLL Specifications ................................................... 4 Register 7Mixer Bias Enable and External VCO Enable (Default: 0x000007) .................................................................... 19 Logic Input and Power Specifications ....................................... 4 Theory of Operation ...................................................................... 20 Timing Characteristics ................................................................ 5 Programming the ADRF6604 ................................................... 20 Absolute Maximum Ratings ............................................................ 6 Initialization Sequence .............................................................. 20 ESD Caution .................................................................................. 6 LO Selection Logic ..................................................................... 21 Pin Configuration and Function Descriptions ............................. 7 Applications Information .............................................................. 22 Typical Performance Characteristics ............................................. 9 Basic Connections for Operation ............................................. 22 RF Frequency Sweep .................................................................... 9 AC Test Fixture ............................................................................... 23 IF Frequency Sweep ................................................................... 10 Evaluation Board ............................................................................ 24 Spurious Performance................................................................ 15 Evaluation Board Control Software ......................................... 24 Register Structure ........................................................................... 16 Schematic and Artwork ............................................................. 26 Register 0Integer Divide Control (Default: 0x0001C0)..... 16 Evaluation Board Configuration Options ............................... 28 Register 1Modulus Divide Control (Default: 0x003001) ........ 16 Outline Dimensions ....................................................................... 29 Register 2Fractional Divide Control (Default: 0x001802) ...... 17 Ordering Guide .......................................................................... 29 REVISION HISTORY 1/14Rev. A to Rev. B 6/10Revision 0: Initial Version Change to Product Title ................................................................... 1 Updated Outline Dimensions (Lead-to-Pad Dimension) ......... 29 5/11Rev. 0 to Rev. A Changes to Features and General Description Sections .............. 1 Changes to Table 2 ............................................................................ 3 Changes to Synthesizer Specifications Parameter and to Phase Noise Parameter, Table 3 ............................................................. 4 Changes to Power Supplies Parameter, Table 4 ............................ 4 Replaced Typical Performance Characteristics Section Renumbered Sequentially ........................................................... 9 Added Spurious Performance Section ......................................... 15 Change to Figure 41 ....................................................................... 17 Changes to Figure 42 ...................................................................... 18 Changes to Theory of Operation Section .................................... 20 Changes to Figure 46 ...................................................................... 22 Added AC Test Fixture Section and Figure 47 ........................... 23 Changes to Evaluation Board Control Software Section and Figure 48 ...................................................................................... 24 Changes to Figure 49 ...................................................................... 25 Rev. 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