Datasheet > AD7731BRU-REEL7

AD7731BRU-REEL7

更新时间： 2024-09-15 12:32:59

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
44页	1008K
描述
Low Noise, High Throughput 24-Bit Sigma-Delta ADC

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AD7731BRU-REEL7 数据手册

Low Noise, High Throughput

24-Bit Sigma-Delta ADC

AD7731

GENERAL D ESCRIP TIO N

FEATURES

T he AD7731 is a complete analog front-end for process control

applications. T he device has a proprietary programmable gain

front end that allows it to accept a range of input signal ranges,

including low level signals, directly from a transducer. The sigma-

delta architecture of the part consists of an analog modulator

and a low pass programmable digital filter, allowing adjustment

of filter cutoff, output rate and settling time.

24-Bit Sigm a-Delta ADC

16 Bits p-p Resolution at 800 Hz Output Rate

Program m able Output Rates up to 6.4 kHz

Program m able Gain Front End

؎0.0015% Nonlinearity

Buffered Differential Inputs

Program m able Filter Cutoffs

FASTStep™* Mode for Channel Sequencing

Single Supply Operation

T he part features three buffered differential programmable gain

analog inputs (which can be configured as five pseudo-differential

inputs), as well as a differential reference input. T he part oper-

ates from a single +5 V supply and accepts seven unipolar ana-

log input ranges: 0 to +20 mV, +40 mV, +80 mV, +160 mV,

+320 mV, +640 mV and +1.28 V, and seven bipolar ranges:

±20 mV, ±40 mV, ±80 mV, ±160 mV, ±320 mV, ±640 mV and

±1.28 V. T he peak-to-peak resolution achievable directly from

the part is 16 bits at an 800 Hz output rate. T he part can switch

between channels with 1 ms settling time and maintain a perfor-

mance level of 13 bits of peak-to-peak resolution.

APPLICATIONS

Process Control

PLCs/ DCS

Industrial Instrum entation

T he serial interface on the part can be configured for three-wire

operation and is compatible with microcontrollers and digital

signal processors. T he AD7731 contains self-calibration and

system calibration options and features an offset drift of less

than 5 nV/°C and a gain drift of less than 2 ppm/°C.

T he part is available in a 24-lead plastic DIP, a 24-lead SOIC

and 24-lead T SSOP package.

FUNCTIO NAL BLO CK D IAGRAM

REF IN(–)

REF IN(+)

AD7731

AIN1

AIN2

AIN3

AIN4

AIN5

AIN6

STANDBY

SYNC

SIGMA-DELTA A/D CONVERTER

100nA

BUFFER

SIGMA-

DELTA

PROGRAMMABLE

DIGITAL

MODULATOR

FILTER

PGA

MUX

100nA

AGND

MCLK IN

CLOCK

GENERATION

SERIAL INTERFACE

MCLK OUT

AND CONTROL LOGIC

SCLK

CALIBRATION

MICROCONTROLLER

DIN

DOUT

AGND

DGND

POL

RDY

RESET

*FASTStep is a trademark of Analog Devices, Inc.

REV. A

REV. 0

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 617/ 329-4700

Fax: 617/ 326-8703

World Wide Web Site: http:/ / w w w .analog.com

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AD7731BRU-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD7731BRUZ-REEL7	ADI	完全替代	Low Noise, High Throughput 24-Bit Sigma-Delta ADC
AD7731BRUZ-REEL	ADI	完全替代	Low Noise, High Throughput 24-Bit Sigma-Delta ADC
AD7731BRU-REEL	ADI	完全替代	Low Noise, High Throughput 24-Bit Sigma-Delta ADC

与AD7731BRU-REEL7相关器件

型号	品牌	获取价格	描述	数据表
AD7731BRUZ	ADI	获取价格	Low Noise, High Throughput 24-Bit Sigma-Delta ADC
AD7731BRUZ-REEL	ADI	获取价格	Low Noise, High Throughput 24-Bit Sigma-Delta ADC
AD7731BRUZ-REEL7	ADI	获取价格	Low Noise, High Throughput 24-Bit Sigma-Delta ADC
AD7731BRZ	ADI	获取价格	Low Noise, High Throughput 24-Bit Sigma-Delta ADC
AD7731BRZ-REEL	ADI	获取价格	Low Noise, High Throughput 24-Bit Sigma-Delta ADC
AD7731BRZ-REEL7	ADI	获取价格	Low Noise, High Throughput 24-Bit Sigma-Delta ADC
AD7731EB	ADI	获取价格	Low Noise High Throughput 24-Bit Sigma-Delta ADC(411.99 k)
AD7732	ADI	获取价格	2-Channel, +-10 V Input Range, High Throughput, 24-Bit SIGMA- ADC
AD7732BRU	ADI	获取价格	2-Channel, +-10 V Input Range, High Throughput, 24-Bit SIGMA- ADC
AD7732BRU	ROCHESTER	获取价格	2-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28, MO-153AE, TSSOP-28

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