EvaluationBoardForPLLFrequency
Synthesizer
a
EVAL-ADF4212EB1
G E NE R AL D E S C R IP T IO N
FEATURES
Self Contained Evaluation Board including Synthesizer,
VCOs, Loop Filters for generating GSM 1800 standards
(1700MHz to 1800MHz RF, 520MHz to 560MHz IF).
RF and IF filters designed for 20kHz Loop Bandw idth, and
200kHz Channel Spacing.
Accom panying Softw are allow s com plete control of syn-
thesizer functions from PC using Window s 95/ 98/ NT.
Battery Operated: Choice of 3V or 5V supplies
On-Board Monitoring of Voltage and Current
Typical RF Phase Noise Perform ance of -84dBc/ Hz @1kHz
offset.
T his board is designed to allow the user to evaluate
the performance of the ADF4212 Frequency Synthe-
sizer for PLL's (Phase Locked Loops). T he block
diagram of the board is shown below. It contains the
footprint for a ADF4212 synthesizer, a pc connector,
SMA connector for the reference input, power sup-
plies and RF output. T here is also a loop filter and a
VCO for both the RF and IF section on board. A
cable is included with the board to connect to a pc
printer port.
T he package also contains Windows 95/98/NT soft-
ware to allow easy programming of the synthesizer.
Typical IF Phase Noise Perform ance of -90dBc/ Hz @1kHz
offset.
Typical Spurious Perform ance of batter than -80dBc
@200kHz offset.
BLO CK D IAGRAM
9V BATTERY
V
DD
POWER SWITCH
ON
OFF
V
V
VCO
P
VCO 1
VCO 1
(Vari-L)
(Vari-L)
ADF421X
VCO 190-XXXT
SMA
Socket
VCO 190-XXXT
IF
SMA
RF
OUT
OUT
Socket
TCXO
Vectron
REF
IN
AD7706
EVAL-ADF421XEB1
PC CONNECTOR
REV 0 11/00
© Analog Devices, Inc., 1999
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