Phase Detector/Frequency Synthesizer
ADF4002-EP
FEATURES
GENERAL DESCRIPTION
400 MHz bandwidth
2.7 V to 3.3 V power supply
Separate charge pump supply (VP) allows extended
tuning voltage in 3 V systems
Programmable charge pump currents
3-wire serial interface
Analog and digital lock detect
Hardware and software power-down mode
104 MHz phase frequency detector
Supports defense and aerospace applications
(AQEC standard)
The ADF4002-EP frequency synthesizer is used to implement
local oscillators in the upconversion and downconversion sections
of wireless receivers and transmitters. It consists of a low noise
digital phase frequency detector (PFD), a precision charge pump,
a programmable reference divider, and a programmable N divider.
The 14-bit reference counter (R counter) allows selectable REFIN
frequencies at the PFD input. A complete phase-locked loop (PLL)
can be implemented if the synthesizer is used with an external
loop filter and voltage controlled oscillator (VCO). In addition,
by programming R and N to 1, the part can be used as a stand-
alone PFD and charge pump.
Military temperature range: −55°C to +125°C
Controlled manufacturing baseline
One assembly/test site
Additional application and technical information can be found
in the ADF4002 data sheet.
One fabrication site
Enhanced product change notification
Qualification data available on request
APPLICATIONS
Clock conditioning
Clock generation
IF LO generation
FUNCTIONAL BLOCK DIAGRAM
AV
DV
R
SET
V
CPGND
DD
DD
P
REFERENCE
14-BIT
R COUNTER
PHASE
FREQUENCY
DETECTOR
REF
CHARGE
PUMP
IN
CP
14
R COUNTER
LATCH
LOCK
DETECT
CURRENT
SETTING 2
CURRENT
SETTING 1
CLK
DATA
LE
24-BIT INPUT
REGISTER
FUNCTION
LATCH
CPI6 CPI5 CPI4
HIGH-Z
CPI3 CPI2 CPI1
22
N COUNTER
LATCH
SD
OUT
AV
DD
MUXOUT
MUX
SD
OUT
RF
RF
A
B
13-BIT
N COUNTER
IN
IN
M3 M2 M1
ADF4002-EP
CE
AGND DGND
Figure 1.
Rev. 0
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