Datasheet > EVAL-ADRF6850EB1Z

EVAL-ADRF6850EB1Z

更新时间： 2024-02-19 18:21:27

品牌	Logo	应用领域
亚德诺 - ADI		接收机
页数	文件大小	规格书
36页	1162K
描述
100 MHz to 1000 MHz Integrated Broadband Receiver

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100 MHz to 1000 MHz

Integrated Broadband Receiver

ADRF6850

FEATURES

GENERAL DESCRIPTION

IQ quadrature demodulator

Integrated fractional-N PLL and VCO

Gain control range: 60 dB

The ADRF6850 is a highly integrated broadband quadrature

demodulator, frequency synthesizer, and variable gain amplifier

(VGA). The device covers an operating frequency range from

100 MHz to 1000 MHz for use in both narrow-band and wideband

communications applications, performing quadrature demodu-

lation from IF directly to baseband frequencies.

Input frequency range: 100 MHz to 1000 MHz

Input P1dB: +12 dBm at 0 dB gain

Input IP3: +22.5 dBm at 0 dB gain

Noise figure: 11 dB at >39 dB gain, 49 dB at 0 dB gain

Baseband 1 dB bandwidth: 250 MHz in wideband mode,

50 MHz in narrow-band mode

The ADRF6850 demodulator includes a high modulus

fractional-N frequency synthesizer with integrated VCO,

providing better than 1 Hz frequency resolution, and a 60 dB

gain control range provided by a front-end VGA.

SPI/I²C serial interface

Power supply: +3.3 V/350 mA

Control of all the on-chip registers is through a user-selected

SPI interface or I²C interface. The device operates from a single

power supply ranging from 3.15 V to 3.45 V.

APPLICATIONS

Broadband communications

Cellular communications

Satellite communications

FUNCTIONAL BLOCK DIAGRAM

VCC1

VCC2

VCC3

VCC4

VCC5

VCC6

VCC7

VCC8

VCC9

LOMON

IBB

CCOMP1

CCOMP2

CCOMP3

60dB

GAIN CONTROL

RANGE

RFI

DRIVER

RFDIV

0°/90°

VCO

CORE

VTUNE

VOCM

RFCM

SEQUENCED

GAIN

INTERFACE

QBB

VGAIN

SET

REFERENCE

×2

5-BIT

DIVIDER

÷2

REFIN

DOUBLER

PHASE

CHARGE

PUMP

FREQUENCY

DETECTOR

–

LF3

CURRENT SETTING

LF2

N-COUNTER

LDET

TESTLO

THIRD-ORDER

SDI/SDA

CLK/SCL

SDO

RFCP4 RFCP3 RFCP2 RFCP1

FRACTIONAL

SPI/

INTERPOLATOR

I C

INTERFACE

FRACTIONAL

MODULUS

INTEGER

ADRF6850

GND

MUXOUT

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

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

Fax: 781.461.3113

www.analog.com

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