ADF4355-3 Datasheet, PDF (1/35 Pages) Analog Devices – Programmable output power level

Data Sheet
Microwave Wideband Synthesizer
with Integrated VCO
ADF4355-3
FEATURES
GENERAL DESCRIPTION
RF output frequency range: 51.5625 MHz to 6600 MHz
The ADF4355-3 allows the implementation of fractional-N or
Fractional-N synthesizer and integer-N synthesizer
integer-N phase-locked loop (PLL) frequency synthesizers when
High resolution 38-bit modulus
used with an external loop filter and an external reference
Low phase noise, voltage controlled oscillator (VCO)
Programmable divide by 1, 2, 4, 8, 16, 32, or 64 output
All power supplies: 3.3 V
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
APPLICATIONS
frequency. A series of frequency dividers at the output provide
operation from 51.5625 MHz to 6600 MHz.
The ADF4355-3 has an integrated VCO with a fundamental
output frequency ranging from 3300 MHz to 6600 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 51.5625 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.
Wireless infrastructure (W-CDMA, TD-SCDMA,
The ADF4355-3 operates with analog, digital, charge pump, and
WiMAX, GSM, PCS, DCS, DECT)
VCO power supplies ranging from 3.1515 V to 3.4485 V. The
Point to point/point to multipoint microwave links
ADF4355-3 also contains hardware and software power-down
Satellites/VSATs
Test equipment/instrumentation
modes.
Clock generation
FUNCTIONAL BLOCK DIAGRAM
CE
AV_DD
DV_DD
V_P
R_SET V_VCO
V_RF
AV_DD
REF _IN A
REF_IN B
CLK
DATA
LE
×2
DOUBLER
10-BIT R
COUNTER
÷2
DIVIDER
DATA REGISTER
FUNCTION
LATCH
INTEGER
REG
FRACTION MODULUS
REG
REG
THIRD-ORDER
FRACTIONAL
INTERPOLATOR
LOCK
DETECT
MULTIPLEXER
CHARGE
PUMP
PHASE
COMPARATOR
VCO
CORE
÷116/2//342//864
OUTPUT
STAGE
MUXOUT
C_REG1
C_REG2
CP_OUT
V_TUNE
V_REF
V_BIAS
V_REGVCO
RF_OUTA+
RF_OUTA–
N COUNTER
MULTIPLEXER
OUTPUT
STAGE
PDB_RF
RF_OUTB+
RF_OUTB–
ADF4355-3
A_GND
CP_GND
A_GNDRF
Figure 1.
SD_GND A_GNDVCO
Rev. A
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