Changes to Frequency Update Sequence Section ...................... 30
10/2016—Revision 0—Initial Version
Rev. A | Page 2 of 35
Data Sheet
SPECIFICATIONS
ADF4356
AV
DD
= DV
DD
= V
RF
= 3.3 V ± 5%, 4.75 V ≤ V
P
= V
VCO
≤ 5.25 V, A
GND
= CP
GND
= A
GNDVCO
= SD
GND
= A
GNDRF
= 0 V, R
SET
= 5.1 kΩ, dBm referred
to 50 Ω, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 1.
Parameter
REF
IN
A/REF
IN
B CHARACTERISTICS
Input Frequency Range
Single-Ended Mode
Differential Mode
Input Sensitivity
Single-Ended Mode
Differential Mode
Input Capacitance
Single-Ended Mode
Differential Mode
Input Current
Phase Frequency Detector
CHARGE PUMP (CP)
CP Current, Sink/Source
High Value
Low Value
R
SET
Range
Current Matching
I
CP
vs. V
CP
I
CP
vs. Temperature
LOGIC INPUTS
Input Voltage
High
Low
Input Current
Input Capacitance
LOGIC OUTPUTS
Output High Voltage
Output High Current
Output Low Voltage
POWER SUPPLIES
Analog Power
Digital Power and RF Supply Voltage
CP and VCO Supply Voltage
CP Supply Power Current
DI
DD
+ AI
DD3
Output Dividers
Supply Current
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
For f < 10 MHz, ensure slew rate >
21 V/µs
10
10
0.4
0.4
250
600
AV
DD
1.8
MHz
MHz
V p-p
V p-p
REF
IN
A biased at AV
DD
/2; ac coupling
ensures AV
DD
/2 bias
LVDS and LVPECL compatible,
REF
IN
A/ REF
IN
B biased at 2.1 V; ac
coupling ensures 2.1 V bias
6.9
1.4
±100
±250
125
I
CP
4.8
0.3
5.1
3
3
1.5
pF
pF
µA
µA
MHz
Single-ended reference programmed
Differential reference programmed
R
SET
= 5.1 kΩ, this resistor is internal
in the ADF4356
mA
mA
kΩ
%
%
%
Fixed
0.5 V ≤ V
CP1
≤ V
P
− 0.5 V
0.5 V ≤ V
CP1
≤ V
P
− 0.5 V
V
CP1
= 2.5 V
V
INH
V
INL
I
INH
/I
INL
C
IN
V
OH
I
OH
V
OL
AV
DD
DV
DD
, V
RF
V
P
, V
VCO
I
P
1.5
DV
DD
0.6
±1
3.0
V
V
µA
pF
V
V
µA
V
V
V
mA
mA
mA
Voltages must equal AV
DD
V
P
must equal V
VCO
DV
DD
− 0.4
1.5
1.8
500
0.4
1.8 V output selected
I
OL2
= 500 µA
See Table 7 and Table 8
3.15
4.75
I
VCO
3.3
AV
DD
5.0
8
82
6 to
36
70
3.45
5.25
9
92
Each output divide by 2 consumes
6 mA
90
Rev. A | Page 3 of 35
ADF4356
Parameter
RF
OUT
A+/RF
OUT
A−Supply Current
Symbol
I
RFOUTx±
Min
Typ
Max
Unit
Data Sheet
Test Conditions/Comments
RF Output A enabled/RF Output B
disabled
−4 dBm setting
−1 dBm setting
2 dBm setting
5 dBm setting
RF Output A enabled/RF Output B
enabled
−4 dBm setting
−1 dBm setting
2 dBm setting
5 dBm setting
Hardware power-down selected
Software power-down selected
Fundamental VCO range
22
33
44
55
RF
OUT
A+/RF
OUT
A− Plus RF
OUT
B+/RF
OUT
B−
Supply Current
I
RFOUTx±
48
65
82
99
5
20
3400
53.125
K
V
25
12
0.5
27
38
49
60
mA
mA
mA
mA
56
74
91
108
Low Power Sleep Mode
RF OUTPUT CHARACTERISTICS
VCO Frequency Range
RF Output Frequency
VCO Sensitivity
Frequency Pushing (Open-Loop)
Frequency Pulling (Open-Loop)
Harmonic Content
Second
Third
RF Output A Power
4
mA
mA
mA
mA
mA
mA
MHz
MHz
MHz/V
MHz/V
MHz
6800
6800
Voltage standing wave ratio (VSWR) =
2:1 RF
OUT
A+/RF
OUT
A−
Fundamental VCO output (RF
OUT
A+)
Divided VCO output (RF
OUT
A+)
Fundamental VCO output (RF
OUT
A+)
Divided VCO output (RF
OUT
A+)
RF
OUT
A+ = 1 GHz; 7.4 nH inductor to V
RF
RF
OUT
A+ = 6.8 GHz; 7.4 nH inductor
to V
RF
RF
OUT
A+ = 5 GHz
RF
OUT
A+ = 1 GHz to 6.8 GHz
RF
OUT
B+ = 1 GHz; 7.4 nH inductor to V
RF
RF
OUT
B+ = 6.8 GHz; 7.4 nH inductor
to V
RF
RF
OUT
B+ = 5 GHz
RF
OUT
B+ = 1 GHz to 6.8 GHz
RF
OUT
A+ = 1 GHz
RF
OUT
A+= 6.8 GHz
VCO noise in open-loop conditions
−26
−29
−32
−14
7
−2
±1
±5
4
−2
±1
±5
−53
−20
dBc
dBc
dBc
dBc
dBm
dBm
dB
dB
dBm
dBm
dB
dBm
dBm
Power Variation
Power Variation over Frequency
RF Output B Power
4
Power Variation
Power Variation over Frequency
Level of Signal with RF Output Disabled
NOISE CHARACTERISTICS
Fundamental VCO Phase Noise
Performance
−115
−135
−137
−155
−113
−133
−135
−153
−110
−130
−132
−150
Rev. A | Page 4 of 35
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
100 kHz offset from 3.4 GHz carrier
800 kHz offset from 3.4 GHz carrier
1 MHz offset from 3.4 GHz carrier
10 MHz offset from 3.4 GHz carrier
100 kHz offset from 5.0 GHz carrier
800 kHz offset from 5.0 GHz carrier
1 MHz offset from 5.0 GHz carrier
10 MHz offset from 5.0 GHz carrier
100 kHz offset from 6.8 GHz carrier
800 kHz offset from 6.8 GHz carrier
1 MHz offset from 6.8 GHz carrier
10 MHz offset from 6.8 GHz carrier
Data Sheet
Parameter
Normalized In-Band Phase Noise Floor
Fractional Channel
5
Integer Channel
6
Normalized 1/f Noise, PN
1_f7
Integrated RMS Jitter (1 kHz to 20 MHz)
8
Spurious Signals Due to PFD Frequency
1
2
ADF4356
Symbol
Min
Typ
−225
−227
−121
97
−85
Max
Unit
dBc/Hz
dBc/Hz
dBc/Hz
fs
dBc
Test Conditions/Comments
10 kHz offset; normalized to 1 GHz
V
CP
is the voltage at the CP
OUT
pin.
I
OL
is the output low current.
3
T
A
= 25°C; AV
DD
= DV
DD
= V
RF
= 3.3 V; V
VCO
= V
P
= 5.0 V; prescaler = 4/5; f
REFIN
= 122.88 MHz; f
PFD
= 61.44 MHz; and f
RF
= 1650 MHz.
4
RF output power using the
EV-ADF4356SD1Z
evaluation board is measured into a spectrum analyzer. Unused RF output pins are terminated in 50 Ω.
5
Use this value to calculate the phase noise for any application. To calculate in-band phase noise performance as seen at the VCO output, use the following formula:
−225 + 10log(f
PFD
) + 20logN. The value given is the lowest noise mode for the fractional channel.
6
Use this value to calculate the phase noise for any application. To calculate in-band phase noise performance as seen at the VCO output, use the following formula:
−227 + 10log(f
PFD
) + 20logN. The value given is the lowest noise mode for the integer channel.
7
The PLL phase noise is composed of 1/f (flicker) noise plus the normalized PLL noise floor. The formula for calculating the 1/f noise contribution at an RF frequency (f
RF
)
and at a frequency offset (f) is given by PN = P
1_f
+ 10log(10 kHz/f) + 20log(f
RF
/1 GHz). Both the normalized phase noise floor and flicker noise are modeled in the
ADIsimPLL
design tool.
8
Integrated RMS jitter using the
EV-ADF4356SD1Z
evaluation board is measured into a spectrum analyzer. The
EV-ADF4356SD1Z
evaluation board is configured to
accept a single ended REFIN (SMA 100) = 160 MHz, VCO frequency = 6 GHz, PFD frequency = 80 MHz, charge pump current = 0.9 mA, and bleed current is off. The loop
filter is configured for an 80 kHz loop filter bandwidth. Unused RF output pins are terminated in 50 Ω.
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