ic datasheet pdf-adf5000,pdf (4 ghz to 18 ghz divide-by-2 prescaler).pdf

4 GHz to 18 GHz
Divide-by-2 Prescaler
Preliminary Technical Data ADF5000

FEATURES FUNCTIONAL BLOCK DIAGRAM
Divide-by-2 prescaler CE
High frequency operation: 4 GHz to 18 GHz
ADF5000
Integrated RF decoupling capacitors BIAS
VDDx
Low power consumption
Active mode: 30 mA 100Ω 100Ω
Power-down mode: 7 mA 1pF
3pF
Low phase noise: −147 dBc/Hz DIVIDE RFOUT
RFIN BY 2
RFOUT
Single dc supply: patible with ADF4xxx PLLs 1pF
Temperature range: −40°C to +105°C 50Ω
Small package: 3 mm × 3 mm LFCSP
APPLICATIONS GND
Figure 1.
PLL frequency range extender
Point-to-point radios
VSAT radios

Communications test equipment

GENERAL DESCRIPTION

The ADF5000 prescaler is a low noise, low power, fixed RF

divider block that can be used to divide down frequencies as
high as 18 GHz to a lower frequency suitable for input to a
PLL IC, such as the ADF4156 or the ADF4106. The ADF5000
provides a divide-by-2 function. The ADF5000 operates from
a V supply and has differential 100 Ω RF outputs to allow
direct interface to the differential RF inputs of PLLs such as
the ADF4156 and ADF4106.


Rev. PrB
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ADF5000 Preliminary Technical Data

TABLE OF CONTENTS
Features .............................................................................................. 1  Pin Configuration and