ADF4351BCPZ AD [Analog Devices], ADF4351BCPZ Datasheet - Page 4

• Manufacturer Part Number: ADF4351BCPZ
• Description: Wideband Synthesizer
• Manufacturer: AD [Analog Devices]

ADF4351
Parameter
NOISE CHARACTERISTICS
1
2
3
4
5
6
I
T
Using 50 Ω resistors to V
main output.
The synthesizer phase noise floor is estimated by measuring the in-band phase noise at the output of the VCO and subtracting 20 log N (where N is the N divider
value) and 10 log f
The PLL phase noise is composed of flicker (1/f) noise plus the normalized PLL noise floor. The formula for calculating the 1/f noise contribution at an RF frequency (f
and at a frequency offset (f) is given by PN = PN
f
measured with an EVAL-ADF4351EB1Z and the Rohde & Schwarz FSUP signal source analyzer.
CP
REFIN
A
Minimum RF Output Power
Maximum RF Output Power
Output Power Variation
Minimum VCO Tuning Voltage
Maximum VCO Tuning Voltage
VCO Phase Noise Performance
Normalized Phase Noise Floor
Normalized 1/f Noise (PN
In-Band Phase Noise
Integrated RMS Jitter
Spurious Signals Due to PFD
Level of Signal with RF Mute Enabled
= 25°C; AV
is internally modified to maintain constant loop gain over the frequency range.
(PN
Frequency
= 122.88 MHz; f
SYNTH
DD
)
4
= DV
PFD
PFD
DD
. To calculate in-band phase noise performance as seen at the VCO output, use the following formula: PN
= V
= 30.72 MHz; VCO frequency = 4222.56 MHz; RF
VCO
VCO
, into a 50 Ω load. Power measured with auxiliary RF output disabled. The current consumption of the auxiliary output is the same as for the
6
= 3.3 V; prescaler = 8/9; f
1_f
)
3
3
5
1_f
+ 10 log(10 kHz/f) + 20 log(f
Min
REFIN
= 100 MHz; f
Typ
−4
5
±1
0.5
2.5
−89
−114
−134
−148
−86
−111
−134
−145
−83
−110
−131
−145
−220
−221
−116
−118
−100
0.27
−80
−40
PFD
OUT
Rev. 0 | Page 4 of 28
= 25 MHz; f
= 2111.28 MHz; N = 137; loop BW = 60 kHz; I
RF
/1 GHz). Both the normalized phase noise floor and flicker noise are modeled in ADIsimPLL.
Max
RF
= 4.4 GHz.
Unit
dBm
dBm
dB
V
V
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps
dBc
dBm
Test Conditions/Comments
Programmable in 3 dB steps
VCO noise is measured in open-loop conditions
10 kHz offset from 2.2 GHz carrier
100 kHz offset from 2.2 GHz carrier
1 MHz offset from 2.2 GHz carrier
5 MHz offset from 2.2 GHz carrier
10 kHz offset from 3.3 GHz carrier
100 kHz offset from 3.3 GHz carrier
1 MHz offset from 3.3 GHz carrier
5 MHz offset from 3.3 GHz carrier
10 kHz offset from 4.4 GHz carrier
100 kHz offset from 4.4 GHz carrier
1 MHz offset from 4.4 GHz carrier
5 MHz offset from 4.4 GHz carrier
PLL loop BW = 500 kHz
ABP = 6 ns
ABP = 3 ns
10 kHz offset; normalized to 1 GHz
ABP = 6 ns
ABP = 3 ns
3 kHz from 2111.28 MHz carrier
CP
SYNTH
= 2.5 mA; low noise mode. The noise was
= PN
TOT
− 10 log(f
PFD
) − 20 log N.
Data Sheet
RF
)