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ADF4157BCPZ-RL71 Fiches technique(PDF) 3 Page - Analog Devices

No de pièce ADF4157BCPZ-RL71
Description  High Resolution 6 GHz Fractional-N Frequency Synthesizer
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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ADF4157BCPZ-RL71 Fiches technique(HTML) 3 Page - Analog Devices

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ADF4157
Rev. 0 | Page 3 of 20
SPECIFICATIONS
AVDD = DVDD = 2.7 V to 3.3 V; VP = AVDD to 5.5 V; AGND = DGND = 0 V; TA = TMIN to TMAX, unless otherwise noted;
dBm referred to 50 Ω.
Table 1.
Parameter
B Version1
Unit
Test Conditions/Comments
RF CHARACTERISTICS (3 V)
RF Input Frequency (RFIN)
0.5/6.0
GHz min/max
−10 dBm/0 dBm min/max. For lower frequencies, ensure slew
rate (SR) > 400 V/μs.
REFERENCE CHARACTERISTICS
REFIN Input Frequency
10/300
MHz min/max
For f < 10 MHz, ensure slew rate > 50 V/μs.
REFIN Input Sensitivity
0.4/AVDD
V p-p min/max
For 10 MHz < REFIN < 250 MHz. Biased at AVDD/22.
0.7/AVDD
V p-p min/max
For 250 MHz < REFIN < 300 MHz. Biased at AVDD/22.
REFIN Input Capacitance
10
pF max
REFIN Input Current
±100
μA max
PHASE DETECTOR
Phase Detector Frequency3
32
MHz max
CHARGE PUMP
ICP Sink/Source
Programmable.
High Value
5
mA typ
With RSET = 5.1 kΩ.
Low Value
312.5
μA typ
Absolute Accuracy
2.5
% typ
With RSET = 5.1 kΩ.
RSET Range
2.7/10
kΩ min/max
ICP Three-State Leakage Current
1
nA typ
Sink and source current.
Matching
2
% typ
0.5 V < VCP < VP – 0.5.
ICP vs. VCP
2
% typ
0.5 V < VCP < VP – 0.5.
ICP vs. Temperature
2
% typ
VCP = VP/2.
LOGIC INPUTS
VINH, Input High Voltage
1.4
V min
VINL, Input Low Voltage
0.6
V max
IINH/IINL, Input Current
±1
μA max
CIN, Input Capacitance
10
pF max
LOGIC OUTPUTS
VOH, Output High Voltage
1.4
V min
Open-drain 1 kΩ pull-up to 1.8 V.
VOH, Output High Voltage
VDD – 0.4
V min
CMOS output chosen.
VOL, Output Low Voltage
0.4
V max
IOL = 500 μA.
POWER SUPPLIES
AVDD
2.7/3.3
V min/V max
DVDD
AVDD
VP
AVDD/5.5
V min/V max
IDD
29
mA max
23 mA typical.
Low Power Sleep Mode
10
μA typ
NOISE CHARACTERISTICS
Phase Noise Figure of Merit4
−207
dBc/Hz typ
ADF4157 Phase Noise Floor5
−137
dBc/Hz typ
@ 10 MHz PFD frequency.
−133
dBc/Hz typ
@ 25 MHz PFD frequency.
Phase Noise Performance6
@ VCO output.
5800 MHz Output7
−87
dBc/Hz typ
@ 2 kHz offset, 25 MHz PFD frequency.
1 Operating temperature of B version is −40°C to +85°C.
2 AC-coupling ensures AVDD/2 bias.
3 Guaranteed by design. Sample tested to ensure compliance.
4 This figure can be used to calculate phase noise for any application. Use the formula –207 + 10log(fPFD) + 20logN to calculate in-band phase noise performance as seen
at the VCO output.
5 The synthesizer phase noise floor is estimated by measuring the in-band phase noise at the output of the VCO and subtracting 20logN (where N is the N divider value).
6 The phase noise is measured with the EVAL-ADF4157EB1Z and the Agilent E5052A phase noise system.
7 fREFIN = 100 MHz; fPFD = 25 MHz; offset frequency = 2 kHz; RFOUT = 5800.25 MHz; N = 232; loop bandwidth = 20 kHz.


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