ADF4355-2 Microwave Wideband Synthesizer with Integrated VCO

The ADF4355-2 allows implementation of fractional-N or integer-N phase-locked loop (PLL) frequency synthesizers when used with an external loop filter and an external reference frequency. A series of frequency dividers permits operation from 54 MHz to 4400 MHz.

The ADF4355-2 has an integrated VCO with a fundamental output frequency ranging from 3400 MHz to 6800 MHz. In addition, the VCO frequency is connected to divide by 1, 2, 4, 8, 16, 32, or 64 circuits that allow the user to generate RF output frequencies as low as 54 MHz. For applications that require isolation, the RF output stage can be muted. The mute function is both pin and software controllable.

Control of all on-chip registers is through a simple 3-wire interface. The ADF4355-2 operates with analog and digital power supplies ranging from 3.15 V to 3.45 V, with charge pump and VCO supplies from 4.75 V to 5.25 V. The ADF4355-2 also contains hardware and software power-down modes.

Applications

Wireless infrastructure (W-CDMA, TD-SCDMA, WiMAX, GSM, PCS, DCS, DECT)
Point to point/point to multipoint microwave links
Satellites/VSATs
Test equipment/instrumentation
Clock generation

Features and Benefits

RF output frequency range: 54 MHz to 4400 MHz

Fractional-N synthesizer and integer-N synthesizer

High resolution 38-bit modulus

Low phase noise, voltage controlled oscillator (VCO)

Programmable divide by 1, 2, 4, 8, 16, 32, or 64 output

Analog and digital power supplies: 3.3 V

Charge pump and VCO power supplies: 5 V typical

Logic compatibility: 1.8 V

Programmable dual modulus prescaler of 4/5 or 8/9

Programmable output power level

RF output mute function

3-wire serial interface

Analog and digital lock detect

RF & Microwave

Clock & Timing

Data Sheets

Document	note
ADF4355-2: Wideband Synthesizer with Integrated VCO Data Sheet (Rev. B)	PDF 533 kB

Application Notes

Document	note
AN-1381: How to Bypass VCO Calibration for the ADF4355-2 (Rev. 0)	PDF 165.73 K

User Guides

Document	note
UG-804: Evaluating the ADF4355-2 Fractional-N/Integer-N PLL Frequency Synthesizer	PDF 1.44 M

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADF4355-2BCPZ Production	32 ld LFCSP (5x5x.75mm) w/3.6exposed pad	OTH 490	-40 to 85C	19.75	13.01	Y
ADF4355-2BCPZ-RL7 Production	32 ld LFCSP (5x5x.75mm) w/3.6exposed pad	REEL 1500	-40 to 85C	0	13.01	Y

Evaluation Boards

Part Number	Description	Price	RoHS
AD-FMCADC7-EBZ	Evaluation Board	-1	Y
EV-ADF4355-2SD1Z	Evaluation Board	-1	Y
EVAL-SDP-CS1Z	SDP-S Controller Board - Interface to EV-ADF4355-2SD1Z (also required)	49	Y