Datasheet
ADF4350
Rev. A | Page 3 of 32
SPECIFICATIONS
AV
DD
= DV
DD
= V
VCO
= SDV
DD
= V
P
= 3.3 V ± 10%; AGND = DGND = 0 V; T
A
= T
MIN
to T
MAX
, unless otherwise noted. Operating
temperature range is −40°C to +85°C.
Table 1.
B Version
Parameter
Min Typ Max
Unit Conditions/Comments
REF
IN
CHARACTERISTICS
Input Frequency 10 250 MHz For f < 10 MHz ensure slew rate > 21 V/μs
Input Sensitivity 0.7 AV
DD
V p-p Biased at AV
DD
/2
1
Input Capacitance 10 pF
Input Current ±60 μA
PHASE DETECTOR
Phase Detector Frequency
2
32 MHz
CHARGE PUMP
I
CP
Sink/Source
3
With R
SET
= 5.1 kΩ
High Value 5 mA
Low Value 0.312 mA
R
SET
Range 2.7 10 kΩ
Sink and Source Current Matching 2 % 0.5 V ≤ V
CP
≤ 2.5 V
I
CP
vs. V
CP
1.5 % 0.5 V ≤ V
CP
≤ 2.5 V
I
CP
vs. Temperature 2 % V
CP
= 2.0 V
LOGIC INPUTS
Input High Voltage, V
INH
1.5 V
Input Low Voltage, V
INL
0.6 V
Input Current, I
INH
/I
INL
±1 μA
Input Capacitance, C
IN
3.0 pF
LOGIC OUTPUTS
Output High Voltage, V
OH
DV
DD
− 0.4 V CMOS output chosen
Output High Current, I
OH
500 μA
Output Low Voltage, V
OL
0.4 V I
OL
= 500 μA
POWER SUPPLIES
AV
DD
3.0 3.6 V
DV
DD
, V
VCO
, SD
VDD
, V
P
AV
DD
These voltages must equal AV
DD
DI
DD
+ AI
DD
4
21 27 mA
Output Dividers 6 to 24 mA Each output divide-by-2 consumes 6 mA
I
VCO
4
70 80 mA
I
RFOUT
4
21 26 mA RF output stage is programmable
Low Power Sleep Mode 7 1000 μA
RF OUTPUT CHARACTERISTICS
Maximum VCO Output Frequency 4400 MHz
Minimum VCO Output Frequency 2200 MHz Fundamental VCO mode
Minimum VCO Output Frequency
Using Dividers
137.5 MHz 2200 MHz fundamental output and divide by 16 selected
VCO Sensitivity 33 MHz/V
Frequency Pushing (Open-Loop) 1 MHz/V
Frequency Pulling (Open-Loop) 90 kHz Into 2.00 VSWR load
Harmonic Content (Second) −19 dBc Fundamental VCO output
Harmonic Content (Third) −13 dBc Fundamental VCO output
Harmonic Content (Second) −20 dBc Divided VCO output
Harmonic Content (Third) −10 dBc Divided VCO output
Minimum RF Output Power
5
−4 dBm Programmable in 3 dB steps
Maximum RF Output Power
5
5 dBm
Output Power Variation ±1 dB
Minimum VCO Tuning Voltage 0.5 V
Maximum VCO Tuning Voltage 2.5 V