Datasheet > AD7701BRZ

AD7701BRZ

更新时间： 2024-11-23 19:35:51

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管转换器
页数	文件大小	规格书
21页	346K
描述
16-Bit Sigma-Delta ADC

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数据手册
替代型号

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AD7701BRZ 数据手册

LC²MOS

16-Bit A/D Converter

AD7701

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Monolithic 16-Bit ADC

0.0015% Linearity Error

SC1

SC2

On-Chip Self-Calibration Circuitry

Programmable 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

MICROCONTROLLER

CALIBRATION

SRAM

13 CAL

Ultralow Power

16-BIT A/D CONVERTER

BP/UP

6-POLE GAUSSIAN

APPLICATIONS

Industrial Process Control

Weigh Scales

ANALOG

MODULATOR

LOW-PASS

DIGITAL FILTER

REF

SLEEP

Portable Instrumentation

Remote Data Acquisition

AGND

DGND

20 SDATA

19 SCLK

CLOCK

GENERATOR

SERIAL INTERFACE

LOGIC

DRDY

CLKIN CLKOUT

MODE

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD7701 is a 16-bit ADC that uses a sigma-delta conversion

technique. The analog input is continuously sampled by an analog

modulator whose mean output duty cycle is proportional to the

input signal. The 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. The sampling rate, filter corner frequency, 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. The 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. The 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 UARTs or to the serial ports

of industry-standard microcontrollers.

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.

The 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. The self-calibration scheme

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

input channel.

The output data is accessed through a flexible serial port, which

has an asynchronous mode compatible with UARTs and two

synchronous modes suitable for interfacing to shift registers or

the serial ports of industry-standard microcontrollers.

CMOS construction ensures low power dissipation, and a power-

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

REV. E

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 companies.

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

12 3 4 5 6 7...21

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AD7701BRZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7701BR	ADI	完全替代	LC2MOS 16-Bit A/D Converter
AD7701ARZ	ADI	类似代替	16-Bit Sigma-Delta ADC

与AD7701BRZ相关器件

型号	品牌	获取价格	描述	数据表
AD7701SQ	ADI	获取价格	LC2MOS 16-Bit A/D Converter
AD7701TQ	ADI	获取价格	LC2MOS 16-Bit A/D Converter
AD7703	ADI	获取价格	LC2MOS 20-Bit A/D Converter
AD7703AN	ADI	获取价格	LC2MOS 20-Bit A/D Converter
AD7703AQ	ADI	获取价格	LC2MOS 20-Bit A/D Converter
AD7703AR	ADI	获取价格	LC2MOS 20-Bit A/D Converter
AD7703BN	ADI	获取价格	LC2MOS 20-Bit A/D Converter
AD7703BNZ	ADI	获取价格	LC2MOS 20-Bit A/D Converter
AD7703BQ	ADI	获取价格	LC2MOS 20-Bit A/D Converter
AD7703BR	ADI	获取价格	LC2MOS 20-Bit A/D Converter

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