Analog Devices ADF4159 Evaluation Board EV-ADF4159EB3Z EV-ADF4159EB3Z データシート
製品コード
EV-ADF4159EB3Z
Direct Modulation/Fast Waveform Generating,
13 GHz, Fractional-N Frequency Synthesizer
Data Sheet
Rev. D
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
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FEATURES
RF bandwidth to 13 GHz
High and low speed FMCW ramp generation
25-bit fixed modulus allows subhertz frequency resolution
PFD frequencies up to 110 MHz
Normalized phase noise floor of −224 dBc/Hz
FSK and PSK functions
Sawtooth, triangular, and parabolic waveform generation
Ramp superimposed with FSK
Ramp with 2 different sweep rates
Ramp delay, frequency readback, and interrupt functions
Programmable phase control
2.7 V to 3.45 V analog power supply
1.8 V digital power supply
Programmable charge pump currents
3-wire serial interface
Digital lock detect
ESD performance: 3000 V HBM, 1000 V CDM
Qualified for automotive applications
High and low speed FMCW ramp generation
25-bit fixed modulus allows subhertz frequency resolution
PFD frequencies up to 110 MHz
Normalized phase noise floor of −224 dBc/Hz
FSK and PSK functions
Sawtooth, triangular, and parabolic waveform generation
Ramp superimposed with FSK
Ramp with 2 different sweep rates
Ramp delay, frequency readback, and interrupt functions
Programmable phase control
2.7 V to 3.45 V analog power supply
1.8 V digital power supply
Programmable charge pump currents
3-wire serial interface
Digital lock detect
ESD performance: 3000 V HBM, 1000 V CDM
Qualified for automotive applications
APPLICATIONS
FMCW radars
Communications test equipment
Communications infrastructure
Communications test equipment
Communications infrastructure
GENERAL DESCRIPTION
is a 13 GHz, fractional-N frequency synthesizer
with modulation and both fast and slow waveform generation
capability. The part uses a 25-bit fixed modulus, allowing subhertz
capability. The part uses a 25-bit fixed modulus, allowing subhertz
consists of a low noise digital phase frequency
detector (PFD), a precision charge pump, and a programmable
reference divider. The Σ-Δ-based fractional interpolator allows
programmable fractional-N division. The INT and FRAC registers
define an overall N divider as N = INT + (FRAC/2
reference divider. The Σ-Δ-based fractional interpolator allows
programmable fractional-N division. The INT and FRAC registers
define an overall N divider as N = INT + (FRAC/2
25
).
can be used to implement frequency shift keying
(FSK) and phase shift keying (PSK) modulation. Frequency sweep
modes are also available to generate various waveforms in the
frequency domain, for example, sawtooth and triangular wave-
forms. Sweeps can be set to run automatically or with each step
manually triggered by an external pulse. The
modes are also available to generate various waveforms in the
frequency domain, for example, sawtooth and triangular wave-
forms. Sweeps can be set to run automatically or with each step
manually triggered by an external pulse. The
features
cycle slip reduction circuitry, which enables faster lock times
without the need for modifications to the loop filter.
Control of all on-chip registers is via a simple 3-wire interface. The
Control of all on-chip registers is via a simple 3-wire interface. The
operates with an analog power supply in the range of
2.7 V to 3.45 V and a digital power supply in the range of 1.62 V
to 1.98 V. The device can be powered down when not in use.
FUNCTIONAL BLOCK DIAGRAM
LOCK
DETECT
CP
DATA
LE
32-BIT
DATA
REGISTER
CLK
AGND
DV
DD
DGND
R
DIV
SD
OUT
N
DIV
DGND
CPGND
SDV
DD
DV
DD
AV
DD
V
P
CE
RF
IN
A
RF
IN
B
OUTPUT
MUX
MUXOUT
–
+
HIGH-Z
PHASE
FREQUENCY
DETECTOR
ADF4159
THIRD-ORDER
FRACTIONAL
INTERPOLATOR
FRACTION
VALUE
INTEGER
VALUE
CHARGE
PUMP
TX
DATA
REFERENCE
R
SET
REF
IN
×2
DOUBLER
5-BIT
R COUNTER
÷2
DIVIDER
MODULUS
2
2
25
VALUE
N COUNTER
+
–
SW2
SW1
SDGND
10849-
001
FAST LOCK
SWITCH
CSR
Figure 1.