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ADF4169 반도체 회로 부품 판매점

Fractional-N Frequency Synthesizer



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Analog Devices
ADF4169 데이터시트, 핀배열, 회로
Data Sheet
Direct Modulation/Fast Waveform Generating,
13.5 GHz, Fractional-N Frequency Synthesizer
ADF4169
FEATURES
GENERAL DESCRIPTION
RF bandwidth to 13.5 GHz
The ADF4169 is a 13.5 GHz, fractional-N frequency synthesizer
High and low speed FMCW ramp generation
25-bit fixed modulus allows subhertz frequency resolution
PFD frequencies up to 130 MHz
Normalized phase noise floor of −224 dBc/Hz
FSK and PSK functions
Sawtooth and triangular 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 to 2 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
with modulation and both fast and slow waveform generation
capability. The device uses a 25-bit fixed modulus, allowing
subhertz frequency resolution.
The ADF4169 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/225).
The ADF4169 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 waveforms and
triangular waveforms. Sweeps can be set to run automatically
or with each step manually triggered by an external pulse. The
ADF4169 features cycle slip reduction (CSR) 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
ADF4169 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 1.8 V
to 2 V. The device can be powered down when not in use.
FUNCTIONAL BLOCK DIAGRAM
AVDD DVDD SDVDD
VP
RSET
ADF4169
REFIN
MUXOUT
CE
TXDATA
×2
DOUBLER
5-BIT
R COUNTER
÷2
DIVIDER
HIGH-Z
OUTPUT
MUX
DGND
SERIAL DATA
OUTPUT
DVDD
R DIVIDER/2
N DIVIDER/2
LOCK
DETECT
THIRD-ORDER
FRACTIONAL
INTERPOLATOR
+ PHASE
FREQUENCY
DETECTOR
REFERENCE
CHARGE
PUMP
CSR
FAST LOCK
SWITCH
SW2
CP
SW1
N COUNTER
+
RFINA
RFINB
CLK
DATA
LE
32-BIT
DATA
REGISTER
FRACTION MODULUS
VALUE 225 VALUE
INTEGER
VALUE
AGND DGND
SDGND
Figure 1.
CPGND
Rev. 0
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Tel: 781.329.4700
©2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


ADF4169 데이터시트, 핀배열, 회로
ADF4169* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
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EVALUATION KITS
ADF4159 Evaluation Board
DOCUMENTATION
Data Sheet
ADF4169: Direct Modulation/Fast Waveform Generating,
13.5 GHz, Fractional-N Frequency Synthesizer Data Sheet
DESIGN RESOURCES
ADF4169 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
DISCUSSIONS
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SAMPLE AND BUY
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number.
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Fractional-N Frequency Synthesizer - Analog Devices