AD7709BRUZ-REEL

更新时间： 2024-02-17 06:08:54

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AD7709BRUZ-REEL 数据手册

PRELIMINARY TECHNICAL DATA

16-Bit Sigma Delta ADC with Current Sources,

Preliminary Technical Data

SwitchableReferenceInputsandI/OPort

AD7709

FEATURES

G E NE R AL D E S C R IP T IO N

16-BIT SINGLE CHANNEL SIGMA DELTA-ADC

Factory Calibrated (field calibration not required)

Output settles in one conversion cycle (single conver

sion m ode)

Program m able Gain Front End

16-bit No Missing Codes

13-bit Pk-Pk Resolution @ 20Hz, 20m V Range

16-bit Pk-PK Resolution @ 20Hz, 2.56V Range

INTERFACE

T he AD7709 is a complete analog front-end for low

frequency measurement applications. T he AD7709

contains a 16-bit sigma delta ADC with PGA and can be

configured as 2 fully-differential input channels or 4

pseudo-differential input channels. Inputs signal ranges

from 20mV to 2.56V can be directly converted using the

AD7709. T hese signals can be converted directly from a

transducer without the need for signal conditioning. Other

on-chip features include three software configurable

current sources, switchable reference inputs, low side

power switches and a 4-bit digital I/O port.

Three-Wire Serial

SPI^TM, QSPI^TM, MICROWIRE^TMand DSP Com patible

Schm itt Trigger on SCLK

T he device operates from a 32kHz crystal with an on-

board PLL generating the required internal operating

frequency. T he output data rate from the part is software

programmable. T he pk-pk resolution from the part varies

with the programmed gain and output data rate.

POWER

Specified for Single 3V and 5V operation

Norm al : 2m A @ 3V

Pow erdow n : 20uA (32kHz Crystal Running)

On-Chip Functions

T he part operates from a single +3V or +5V supply.

When operating from +3V supplies, the power dissipation

for the part is XmW. T he AD7709 are housed in a 24-

pin SOIC and T SSOP packages.

Rail-to-Rail Input Buffer and PGA

Sw itchable Reference Inputs

3 Configurable Current Sources

Low Side Pow er Sw tches

Digital I/ O Port

APPLICATIONS

Industrial Process Control

Instrum entation

FUNC TIO NAL BLO C K D IAGRAM

REFIN2(+) REFIN1(+)

REFIN2(-) REFIN1(-)

XTAL1 XTAL2

VDD

Pressure Transducers

Portable Instrum entation

OSC

PLL

IOUT 1

IOUT 2

DOUT

DIN

SERIAL

INTERFACE

CONTROL

LOGIC

AIN1

AIN2

16-BIT

Σ−∆ ADC

BUF

PGA

SCLK

MUX

AIN3 / P3

AIN4 / P4

RDY

RESET

AINCOM

AD7709

VDD

I/O PORT

GND

PWRGND

SW1/P1 SW2/P2

SPIand QSPI are a Registered Trademark of Motorola Inc.

REV. PrA January 2001

® MICROWIRE is a Registered Trademark of National Semiconductor Corp.

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: 781/ 329-4700

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

Analog Devices, Inc., 2001

Fax: 781/ 326-8703

12 3 4 5 6 7...17

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AD7709BRUZ-REEL 替代型号

型号	品牌	替代类型	描述	数据表
AD7709BRUZ-REEL7	ADI	完全替代	16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
AD7709BRUZ	ADI	完全替代	16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
AD7709ARUZ	ADI	完全替代	16-Bit-ADC with Switchable Current Sources

与AD7709BRUZ-REEL相关器件

型号	品牌	获取价格	描述	数据表
AD7709BRUZ-REEL7	ADI	获取价格	16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
AD770JD	ETC	获取价格	Analog-to-Digital Converter， 8-Bit
AD770KD	ETC	获取价格	Analog-to-Digital Converter， 8-Bit
AD770SD	ETC	获取价格	Analog-to-Digital Converter， 8-Bit
AD7710	ADI	获取价格	Signal Conditioning ADC
AD7710*	ADI	获取价格	Signal Conditioning ADC
AD7710_15	ADI	获取价格	Signal Conditioning ADC
AD7710AN	ADI	获取价格	Signal Conditioning ADC
AD7710ANZ	ADI	获取价格	Signal Conditioning ADC
AD7710AQ	ADI	获取价格	Signal Conditioning ADC

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