ADF4159

更新时间： 2024-12-01 12:27:03

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
36页	627K
描述
Direct Modulation/Fast Waveform Generating, 13 GHz, Fractional-N Frequency Synthesizer

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ADF4159 数据手册

Direct Modulation/Fast Waveform Generating,

13 GHz, Fractional-N Frequency Synthesizer

Data Sheet

ADF4159

FEATURES

GENERAL DESCRIPTION

RF bandwidth to 13 GHz

High and low speed FMCW ramp generation

The ADF4159 is a 13 GHz, fractional-N frequency synthesizer

with modulation and both fast and slow waveform generation

25-bit fixed modulus allows subhertz frequency resolution

PFD frequencies up to 110 MHz

capability. The part uses a 25-bit fixed modulus, allowing subhertz

frequency resolution.

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

The ADF4159 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 ADF4159 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. The ADF4159 features cycle slip reduction circuitry, which

enables faster lock times without the need for modifications to

the loop filter.

Programmable charge pump currents

3-wire serial interface

Digital lock detect

ESD performance: 3000 V HBM, 1000 V CDM

Control of all on-chip registers is via a simple 3-wire interface. The

ADF4159 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.

APPLICATIONS

FMCW radars

Communications test equipment

Communications infrastructure

FUNCTIONAL BLOCK DIAGRAM

SDV

SET

ADF4159

SW2

REFERENCE

5-BIT

R COUNTER

×2

REF

DOUBLER

÷2

DIVIDER

–

PHASE

FREQUENCY

DETECTOR

CHARGE

PUMP

HIGH-Z

CSR

DGND

LOCK

DETECT

FAST LOCK

SWITCH

SW1

OUTPUT

MUX

MUXOUT

OUT

DIV

–

N COUNTER

THIRD-ORDER

FRACTIONAL

INTERPOLATOR

DATA

CLK

FRACTION

VALUE

MODULUS

VALUE

INTEGER

VALUE

32-BIT

DATA

AGND

DGND

SDGND

CPGND

Figure 1.

Rev. B

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

12 3 4 5 6 7...36

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ADF4169	ADI	获取价格	Direct Modulation/Fast Waveform Generating, Fractional-N Frequency Synthesizer
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