Datasheet > ADF4108BRUZ-RL7

ADF4108BRUZ-RL7

更新时间： 2024-11-09 03:17:47

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	440K
描述
PLL Frequency Synthesizer

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数据手册

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ADF4108BRUZ-RL7 数据手册

PLL Frequency Synthesizer

ADF4108

FEATURES

GENERAL DESCRIPTION

8.0 GHz bandwidth

3.2 V to 3.6 V power supply

Separate charge pump supply (V_P) allows extended tuning

voltage in 3.3 V systems

Programmable, dual modulus prescaler 8/9, 16/17, 32/33, or

64/65

Programmable charge pump currents

Programmable antibacklash pulse width

3-wire serial interface

Analog and digital lock detect

Hardware and software power-down mode

Loop filter design possible with ADIsimPLL

The ADF4108 frequency synthesizer can be used to implement

local oscillators in the up-conversion and down-conversion

sections of wireless receivers and transmitters. It consists of a

low noise digital PFD (phase frequency detector), a precision

charge pump, a programmable reference divider, programmable

A and B counters, and a dual-modulus prescaler (P/P + 1). The

A (6-bit) and B (13-bit) counters, in conjunction with the dual-

modulus prescaler (P/P + 1), implement an N divider (N =

BP + A). In addition, the 14-bit reference counter (R counter),

allows selectable REFIN frequencies at the PFD input. A

complete phase-locked loop (PLL) can be implemented if the

synthesizer is used with an external loop filter and voltage

controlled oscillator (VCO). Its very high bandwidth means

that frequency doublers can be eliminated in many high

frequency systems, simplifying system architecture and

reducing cost.

APPLICATIONS

Broadband wireless access

Satellite systems

Instrumentation

Wireless LANs

Base stations for wireless radio

FUNCTIONAL BLOCK DIAGRAM

SET

CPGND

REFERENCE

14-BIT

R COUNTER

PHASE

FREQUENCY

DETECTOR

REF

CHARGE

PUMP

R COUNTER

LATCH

LOCK

DETECT

CURRENT

SETTING 2

CURRENT

SETTING 1

CLK

DATA

24-BIT INPUT

FUNCTION

LATCH

CPI6 CPI5 CPI4

HIGH Z

CPI3 CPI2 CPI1

A, B COUNTER

LATCH

FROM

OUT

FUNCTION

LATCH

MUXOUT

MUX

13-BIT

N = BP + A

OUT

B COUNTER

LOAD

PRESCALER

P/P + 1

LOAD

M3 M2 M1

6-BIT

A COUNTER

ADF4108

AGND DGND

Figure 1.

Rev. 0

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

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与ADF4108BRUZ-RL7相关器件

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ADF4108L703F	ADI	获取价格	PLL Frequency Synthesizer
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ADF4110_15	ADI	获取价格	RF PLL Frequency Synthesizers
ADF4110BCP	ADI	获取价格	RF PLL Frequency Synthesizers
ADF4110BCP-REEL	ADI	获取价格	IC PLL FREQUENCY SYNTHESIZER, 550 MHz, CQCC20, MO-220-VGGD, LFCSP-20, PLL or Frequency Syn
ADF4110BCP-REEL7	ADI	获取价格	IC PLL FREQUENCY SYNTHESIZER, 550 MHz, CQCC20, MO-220-VGGD, LFCSP-20, PLL or Frequency Syn
ADF4110BCPZ	ADI	获取价格	RF PLL Frequency Synthesizers
ADF4110BCPZ-REEL	ADI	获取价格	IC PLL FREQUENCY SYNTHESIZER, 550 MHz, CQCC20, MO-220-VGGD, LFCSP-20, PLL or Frequency Syn

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