ADF5000 Datasheet PDF - Analog Devices

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ADF5000
Analog Devices

Part Number ADF5000
Description 4 GHz to 18 GHz Divide-by-2 Prescaler
Page 13 Pages


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Data Sheet
FEATURES
Divide-by-2 prescaler
High frequency operation: 4 GHz to 18 GHz
Integrated RF decoupling capacitors
Low power consumption
Active mode: 30 mA
Power-down mode: 17 mA
Low phase noise: −147 dBc/Hz
Single dc supply: 3.3 V compatible with ADF4xxx PLLs
Temperature range: −40°C to +105°C
Small package: 3 mm × 3 mm LFCSP
APPLICATIONS
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 3.3 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.
4 GHz to 18 GHz
Divide-by-2 Prescaler
ADF5000
FUNCTIONAL BLOCK DIAGRAM
CE
RFIN
3pF
50Ω
BIAS
DIVIDE
BY 2
ADF5000
VDDx
100Ω
100Ω
1pF
1pF
RFOUT
RFOUT
GND
Figure 1.
Rev. A
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