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ADRF6620-EVALZ User Guide
UG-558
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluating the ADRF6620, a 700 MHz to 2700 MHz Rx Mixer
with Integrated IF Amplifier, Fractional-N PLL, and VCO
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 16
FEATURES
Full-featured evaluation board for the ADRF6620
On-board USB for SPI control
Single +5 V operation
C# software interface for serial port control
EVALUATION KIT CONTENTS
ADRF6620 evaluation board
USB cable
ADDITIONAL EQUIPMENT NEEDED
Analog signal sources
Power supply (6.0 V, 2.5 A)
PC running Windows® 98 (2nd ed.), Windows 2000,
Windows ME, Windows XP, or Windows 7
USB 2.0 port, recommended
SOFTWARE NEEDED
ADRF6620 control software
ONLINE RESOURCES
ADRF6620 data sheet
ADRF6620-EVALZ user guide
GENERAL DESCRIPTION
The ADRF6620 is a highly integrated active mixer and
synthesizer ideally suited for next generation communication
systems. The feature rich device consists of a high linearity
broadband active mixer, an integrated fractional-N phase-
locked loop (PLL), a low phase noise multicore voltage
controlled oscillator (VCO), and an IF digitally programmable
variable gain amplifier (DGA). In addition, the ADRF6620
also integrates a 4:1 RF switch, an on-chip tunable RF balun,
programmable RF attenuator, and LDOs. This highly integrated
device fits within a small 7 mm × 7 mm footprint.
This user guide describes the ADRF6620-EVAL Z evaluation
board, which provides all of the support circuitry required to
operate the ADRF6620 in its various configurations. The
application software used to interface with the device is also
described.
The ADRF6620 data sheet, available at www.analog.com,
which provides additional information, should be consulted
when working with this evaluation board.
LOCK_DET
VPTAT
SCAN
LOIN–
VTUNE
ADRF6620
LOIN+
÷1, ÷2,
÷4, ÷8
CHARGE
PUMP
CP
N = INT +
REFIN
MUXOUT
RFIN0
IFOUT1–
MXOUT+
CS
SCLK
SDIO
DECL1
DECL4
DECL2
MXOUT–
IFIN+
IFIN–
LOIN+
LOIN–
VTUNE
CP
SERIAL
PORT
INTERFACE
LDO
VCO
LDO
3.3V
IFOUT1+
IFOUT2–
IFOUT2+
LDO
2.5 V
RFIN1
RFIN2
RFIN3
÷2
÷8
÷4
÷2
×1
×2
+
PFD
FRAC
MOD
11493-001
Figure 1. ADRF6620 Evaluation Board
