Datasheet > EVAL-AD7401AEDZ

EVAL-AD7401AEDZ

更新时间： 2024-12-01 06:58:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	431K
描述
Isolated Sigma-Delta Modulator

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EVAL-AD7401AEDZ 数据手册

Isolated Sigma-Delta Modulator

AD7401A

FEATURES

GENERAꢀ DESCRIPTION

20 MHz maximum external clock rate

Second-order modulator

16 bits, no missing codes

2 ꢀSB INꢀ typical at 16 bits

1 μV/°C typical offset drift

On-board digital isolator

On-board reference

2ꢁ0 mV analog input range

ꢀow power operation: 17 mA typical at ꢁ.ꢁ V

−40°C to +12ꢁ°C operating range

16-lead SOIC package

Internal clock version: AD7400A

Safety and regulatory approvals

Uꢀ recognition

37ꢁ0 V rms for 1 minute per Uꢀ 1ꢁ77

CSA Component Acceptance Notice #ꢁA

VDE Certificate of Conformity

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

The AD7401A¹is a second-order, sigma-delta (Σ-Δ) modulator

that converts an analog input signal into a high speed, 1-bit data

stream with on-chip digital isolation based on Analog Devices,

Inc., iCoupler® technology. The AD7401A operates from a 5 V

power supply and accepts a differential input signal of ±±50 mV

(±ꢀ±0 mV full scale). The analog input is continuously sampled

by the analog modulator, eliminating the need for external

sample-and-hold circuitry. The input information is contained

in the output stream as a density of ones with a data rate up to

±0 MHz. The original information can be reconstructed with

an appropriate digital filter. The serial I/O can use a 5 V or a ꢀ V

supply (V_DD±).

The serial interface is digitally isolated. High speed CMOS,

combined with monolithic air core transformer technology,

means the on-chip isolation provides outstanding performance

characteristics, superior to alternatives such as optocoupler

devices. The part contains an on-chip reference. The AD7401A

is offered in a 16-lead SOIC and has an operating temperature

range of −40°C to +1±5°C.

_IORM= 891 V peak

APPꢀICATIONS

AC motor controls

Shunt current monitoring

Data acquisition systems

Analog-to-digital and opto-isolator replacements

FUNCTIONAꢀ BꢀOCK DIAGRAM

DD2

DD1

AD7401A

T/H

Σ-Δ ADC

–

UPDATE

WATCHDOG

ENCODE

DECODE

BUF

MDAT

REF

CONTROL LOGIC

WATCHDOG

UPDATE

DECODE

MCLKIN

ENCODE

GND

Figure 1.

¹Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents pending.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

12 3 4 5 6 7...20

中文翻译

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与EVAL-AD7401AEDZ相关器件

型号	品牌	获取价格	描述	数据表
EVAL-AD7401EB	ADI	获取价格	Isolated Sigma-Delta Modulator
EVAL-AD7403-8FMCZ	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
EVAL-AD7403FMCZ	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
EVAL-AD7414/15EB	ADI	获取价格	【0.5C Accurate, 10-Bit Digital Temperature Se
EVAL-AD7416/7/8EBZ	ADI	获取价格	10-Bit Digital Temperature Sensor (AD7416) and Four Single-Channel ADCs
EVAL-AD7416EB	ADI	获取价格	10-Bit Digital Temperature Sensor (AD7416) and Single/Four-Channel ADC (AD7417/AD7418)
EVAL-AD7417EB	ADI	获取价格	10-Bit Digital Temperature Sensor (AD7416) and Single/Four-Channel ADC (AD7417/AD7418)
EVAL-AD7418EB	ADI	获取价格	10-Bit Digital Temperature Sensor (AD7416) and Single/Four-Channel ADC (AD7417/AD7418)
EVAL-AD7440CB	ADI	获取价格	Differential Input, 1 MSPS 10-Bit and 12-Bit ADCs in an 8-Lead SOT-23
EVAL-AD7440CB3	ADI	获取价格	Differential Input, 1 MSPS ADCs in an 8-Lead SOT-23

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