ANALOG DEVICES ADF4000 Service Manual
REFERENCE
N = BP + A
FUNCTION
LATCH
PRESCALER
P/P +1
13-BIT
B COUNTER
6-BIT
A COUNTER
14-BIT
R COUNTER
24-BIT
INPUT REGISTER
R COUNTER
LATCH
A, B COUNTER
LATCH
PHASE
FREQUENCY
DETECTOR
CHARGE
PUMP
M3 M2 M1
HIGH Z
MUX
MUXOUT
CP
AV
DD
SD
OUT
19
13
14
22
SD
OUT
FROM
FUNCTION
LATCH
DGNDAGNDCE
RF
IN
B
RF
IN
A
LE
DATA
CLK
REF
IN
CPGND
V
P
DV
DD
AV
DD
LOCK
DETECT
ADF4110/ADF4111
ADF4112/ADF4113
R
SET
CURRENT
SETTING 2
CPI3 CPI2 CPI1 CPI6 CPI5 CPI4
CURRENT
SETTING 1
6
LOAD
LOAD
ADF4000 Series
Features
Pin-compatibility with LMX-23xx series synthesizers allows
easy system performance improvements with no hardware or
software changes.
Proprietary pinout versions allow additional flexibility and
system optimization.
All devices available in 16-pin TSSOP and 20-lead LPCC
4 x 4 mm chip-scale packages.
Wide operating power supply range (+2.7 to +5.5 Volts),
with separate Vp for extended tuning range in 3-Volt
systems.
Low supply current (typically 4.5 mA for the lower-frequency
devices, slightly higher for devices operating above 1.2 GHz);
all devices include low-current standby mode.
Integer-N PLL
Frequency Synthesizers
Evaluation boards and software are available for all devices.
Analog Devices’ ADF4000 series offer a choice of industry-standard
pinout with improved performance, or new pinout with increased
software programmability.
Improve Performance to 6GHz with New PLL Synthesizers in Proprietary and Industry-Standard Pinouts
Phase-Locked-Loop (PLL) frequency synthesizers are used in a
wide range of RF applications. They are used to generate
digitally-programmable frequencies, with the stability and
accuracy determined by a fixed-frequency reference source.
PLLs are used for IF and LO generation for transmit and receive
paths in fixed and portable wireless equipment as well as
wired communications systems such as CATV and test
equipment and instrumentation.
Key parameters of PLL ICs include maximum frequency, phase
noise, and power consumption. Analog Devices PLLs are
available with operating frequencies to 6 GHz, with phase
noise down to –92dBc/Hz. All operate on 2.7 to 5.5 V supplies,
with a separate power supply pin for the charge pump.
Current consumption is as low as 4.5 mA. Both single and dual
versions are available, in both industry-standard “LMX”
pinouts and proprietary pinouts offering greater flexibility
allowing many more features to be software-controlled,
including prescaler division ratio, anti-backlash pulse width,
and charge-pump current. In addition to ADI’s impressive line
of current PLL offerings, ADI has introduced it’s low power (or
“L” variant) products aimed at minimizing power drain while
maximizing phase-noise performance.
ADF4000 Series PLL Synthesizers
UP TO
6dB
BETTER
0
–10
–20
–30
–40
–50
–60
–70
OUTPUT POWER – dB
–80
–90
–100
REFERENCE
LEVEL = –4.2dBm
–400kHz –200kHz 900MHz +200kHz +400kHz
VDD = 3V, VP = 5V
I
= 5mA
CP
PFD FREQUENCY = 200kHz
LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 10Hz
VIDEO BANDWIDTH = 10Hz
SWEEP = 2.5 SECONDS
AVERAGES = 30
–90.2dBc
elbaTnoitceleSLLPelgniS elbaTnoitceleSLLPlauD
ledoM.qerF.xaMledoMSNledoM.qerF.xaMledoMSN
1004FDAzHM002AN0124FDAzHG2.1/55.0AN
0114FDAzHM055AN1124FDAzHG0.2/55.0AN
2114FDAzHG2.1AN2124FDAzHG7.2/9.0AN
3114FDAzHG0.3AN3124FDAzHG0.3/9.0AN
6014FDAzHG0.6AN6024FDAzHG5.0/5.07332XML
6114FDAzHM0556032XML7024FDAzHG1.1/1.15332XML
7114FDAzHG2.16132XML8024FDAzHG0.2/1.16332XML
8114FDAzHG8.26232XML6124FDAzHG2.1/5.02332XML
Note: “L” denotes a lower power consumption option available
(Example: ADF4217L)
0
–10
–20
–30
–40
–50
–60
–70
OUTPUT POWER – dB
–80
–90
–100
REFERENCE
LEVEL = –4.2dBm
–2kHz –1kHz 900MHz +1kHz +2kHz
VDD = 3V, VP = 5V
ICP = 5mA
PFD FREQUENCY = 200kHz
LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 10Hz
VIDEO BANDWIDTH = 10Hz
SWEEP = 1.9 SECONDS
AVERAGES = 19
7124FDAzHG0.2/5.01332XML
L7124FDAzHG0.2/5.0L1332XML
8124FDAzHG5.2/5.00332XML
L8124FDAzHG5.2/5.0L0332XML
L9124FDAzHG5.2/540.0732XML
–91.0dBc/Hz
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Headquarters
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Tel. +1.781.329.4700
Fax.+1.781.326.8703
www.analog.com
© Analog Devices, Inc., 2002. All rights reserved. All brand and product names are trademarks or service marks of their respective owners.
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Germany
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