AD7713AR-REEL

更新时间： 2024-11-09 12:36:43

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	271K
描述
Loop-Powered Signal Conditioning ADC

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数据手册
替代型号

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AD7713AR-REEL 数据手册

LC²MOS

Loop-Powered Signal Conditioning ADC

AD7713

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Charge Balancing ADC

24 Bits No Missing Codes

؎0.0015% Nonlinearity

3-Channel Programmable Gain Front End

Gains from 1 to 128

REF REF

IN(–) IN(+)

STANDBY

AD7713

1␮A

2 Differential Inputs

CHARGING BALANCING ADC

1 Single-Ended High Voltage Input

Low-Pass Filter with Programmable Filter Cutoffs

Ability to Read/Write Calibration Coefficients

Bidirectional Microcontroller Serial Interface

Single-Supply Operation

AUTO-ZEROED

DIGITAL

AIN1(+)

AIN1(–)

AIN2(+)

AIN2(–)

SYNC

⌺-⌬

MODULATOR

FILTER

PGA

A = 1 – 128

MCLK

INPUT

AIN3

CLOCK

GENERATION

SCALING

Low Power (3.5 mW typ) with Power-Down Mode

(150 ␮W typ)

MCLK

OUT

200␮A

SERIAL INTERFACE

RTD1

RTD2

APPLICATIONS

Loop Powered (Smart) Transmitters

RTD Transducers

CONTROL

OUTPUT

200␮A

Process Control

Portable Industrial Instruments

AGND DGND

RFS TFS MODE SDATA SCLK DRDY A0

GENERAL DESCRIPTION

CMOS construction ensures low power dissipation, and a hard-

ware programmable power-down mode reduces the standby

power consumption to only 150 µW typical. The part is available

in a 24-lead, 0.3 inch wide, PDIP and CERDIP as well as a 24-

lead SOIC package.

The AD7713 is a complete analog front end for low frequency

measurement applications. The device accepts low level signals

directly from a transducer or high level signals (4 ϫ V_REF) and

outputs a serial digital word. It employs ⌺-⌬ conversion

technique to realize up to 24 bits of no missing codes

performance. The input signal is applied to a proprietary pro-

grammable gain front end based around an analog modulator.

The modulator output is processed by an on-chip digital filter.

The first notch of this digital filter can be programmed via the

on-chip control register, allowing adjustment of the filter cutoff

and settling time.

PRODUCT HIGHLIGHTS

1. The AD7713 consumes less than 1 mA in total supply current,

making it ideal for use in loop-powered systems.

2. The two programmable gain channels allow the AD7713 to

accept input signals directly from a transducer removing a

considerable amount of signal conditioning. To maximize

the flexibility of the part, the high level analog input accepts

4 ϫ V_REFsignals. On-chip current sources provide excitation

for 3-wire and 4-wire RTD configurations.

The part features two differential analog inputs and one single-

ended high level analog input as well as a differential reference

input. It can be operated from a single supply (AV_DDand DV_DD

at 5 V). The part provides two current sources that can be used

to provide excitation in 3-wire and 4-wire RTD configurations.

The AD7713 thus performs all signal conditioning and conver-

sion for a single-, dual- or three-channel system.

3. No missing codes ensures true, usable, 24-bit dynamic range

coupled with excellent 0.0015% accuracy. The effects of

temperature drift are eliminated by on-chip self-calibration,

which removes zero-scale and full-scale errors.

The AD7713 is ideal for use in smart, microcontroller-based

systems. Gain settings, signal polarity, and RTD current control

can be configured in software using the bidirectional serial port.

The AD7713 contains self-calibration, system calibration, and

background calibration options and also allows the user to read

and to write the on-chip calibration registers.

4. The AD7713 is ideal for microcontroller or DSP processor

applications with an on-chip control register, which allows

control over filter cutoff, input gain, signal polarity, and

calibration modes. The AD7713 allows the user to read and

write the on-chip calibration registers.

REV. D

Information furnished by Analog Devices is believed to be accurate and

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

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks 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: 781/326-8703

www.analog.com

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AD7713AR-REEL 替代型号

型号	品牌	替代类型	描述	数据表
AD7713AR	ADI	完全替代	LC2MOS Loop-Powered Signal Conditioning ADC
AD7713ARZ-REEL	ADI	功能相似	CMOS, Low Power 24-Bit Sigma-Delta, Signal Conditioning ADC with Matched RTD Current Sourc
AD7713ARZ	ADI	功能相似	LC2MOS Loop-Powered Signal Conditioning ADC

与AD7713AR-REEL相关器件

型号	品牌	获取价格	描述	数据表
AD7713AR-REEL7	ADI	获取价格	LC2MOS Loop-Powered Signal Conditioning ADC
AD7713ARZ	ADI	获取价格	LC2MOS Loop-Powered Signal Conditioning ADC
AD7713ARZ-REEL	ADI	获取价格	CMOS, Low Power 24-Bit Sigma-Delta, Signal Conditioning ADC with Matched RTD Current Sourc
AD7713SQ	ADI	获取价格	LC2MOS Loop-Powered Signal Conditioning ADC
AD7713SQ/883B	ADI	获取价格	IC 3-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, CDIP24, 0.300 INCH, HERMETIC SEALED, CERDIP
AD7713SR	ADI	获取价格	IC 1-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24, SOIC-24, Analog to Digital Converter
AD7714	ADI	获取价格	3 V/5 V, CMOS, 500 uA Signal Conditioning ADC
AD7714*	ADI	获取价格	3 V/5 V. CMOS. 500 uA Signal Conditioning ADC
AD7714ACHIPS-3	ADI	获取价格	3 V/5 V, CMOS, 500 uA Signal Conditioning ADC
AD7714ACHIPS-5	ADI	获取价格	3 V/5 V, CMOS, 500 uA Signal Conditioning ADC

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