AD7701

更新时间： 2024-09-14 22:29:11

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
16页	314K
描述
LC2MOS 16-Bit A/D Converter

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中文翻译

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数据手册

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AD7701 数据手册

LC MOS

16-Bit A/D Converter

AD7701

FEATURES

Monolithic 16-Bit ADC

FUNCTIO NAL BLO CK D IAGRAM

AV_DDDV_DDAV_SSDV_SS

SC1

SC2

0.0015% Linearity Error

On-Chip Self-Calibration Circuitry

Program m able Low -Pass Filter

0.1 Hz to 10 Hz Corner Frequency

0 V to +2.5 V or ؎2.5 V Analog Input Range

4 kSPS Output Data Rate

Flexible Serial Interface

AD7701

CALIBRATION

SRAM

CAL

MICROCONTROLLER

16-BIT A/D CONVERTER

A_IN

BP/UP

SLEEP

Ultralow Pow er

6-POLE GAUSSIAN

LOW-PASS

DIGITAL FILTER

ANALOG

MODULATOR

V_REF

APPLICATIONS

Industrial Process Control

Weigh Scales

Portable Instrum entation

Rem ote Data Acquisition

AGND

DGND

20 SDATA

SCLK

CLOCK

GENERATOR

SERIAL INTERFACE

LOGIC

DRDY

CLKIN CLKOUT MODE

GENERAL D ESCRIP TIO N

P RO D UCT H IGH LIGH TS

T he AD7701 is a 16-bit ADC which uses a sigma-delta conver-

sion technique. T he analog input is continuously sampled by an

analog modulator whose mean output duty cycle is proportional

to the input signal. T he modulator output is processed by an

on-chip digital filter with a six-pole Gaussian response, which

updates the output data register with 16-bit binary words at

word rates up to 4 kHz. T he sampling rate, filter corner fre-

quency and output word rate are set by a master clock input

that may be supplied externally, or by a crystal-controlled on-

chip clock oscillator.

1. T he AD7701 offers 16-bit resolution coupled with outstand-

ing 0.0015% accuracy.

2. No missing codes ensures true, usable, 16-bit dynamic range,

removing the need for programmable gain and level-setting

circuitry.

3. T he effects of temperature drift are eliminated by on-chip

self-calibration, which removes zero and gain error. External

circuits can also be included in the calibration loop to

remove system offsets and gain errors.

4. A flexible synchronous/asynchronous interface allows the

AD7701 to interface directly to UART s or to the serial ports

of industry-standard microcontrollers.

T he inherent linearity of the ADC is excellent, and endpoint

accuracy is ensured by self-calibration of zero and full scale

which may be initiated at any time. T he self-calibration scheme

can also be extended to null system offset and gain errors in the

input channel.

5. Low operating power consumption and an ultralow power

standby mode make the AD7701 ideal for loop-powered

remote sensing applications, or battery-powered portable

instruments.

T he output data is accessed through a flexible serial port, which

has an asynchronous mode compatible with UART s and two

synchronous modes suitable for interfacing to shift registers or

the serial ports of industry-standard microcontrollers.

CMOS construction insures low power dissipation, and a power

down mode reduces the idle power consumption to only 10 µW.

REV. D

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

12 3 4 5 6 7...16

中文翻译

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与AD7701相关器件

型号	品牌	获取价格	描述	数据表
AD7701AN	ROCHESTER	获取价格	1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDIP20, PLASTIC, MO-095-AE, DIP-20
AD7701AN	ADI	获取价格	LC2MOS 16-Bit A/D Converter
AD7701ANZ	ROCHESTER	获取价格	1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDIP20, PLASTIC, MO-095-AE, DIP-20
AD7701AQ	ADI	获取价格	LC2MOS 16-Bit A/D Converter
AD7701AR	ADI	获取价格	LC2MOS 16-Bit A/D Converter
AD7701AR	ROCHESTER	获取价格	1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO20, MS-013AC, SOIC-20
AD7701ARS	ADI	获取价格	LC2MOS 16-Bit A/D Converter
AD7701ARS	ROCHESTER	获取价格	1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28, MO-150AH, SSOP-28
AD7701ARS-REEL	ADI	获取价格	1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28, SSOP-28
AD7701ARSZ	ROCHESTER	获取价格	1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28, MO-150AH, SSOP-28

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