Datasheet > AD7402

AD7402

更新时间： 2024-01-25 07:04:06

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	519K
描述
16-Bit, Isolated Sigma-Delta Modulator

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AD7402 数据手册

16-Bit, Isolated Sigma-Delta Modulator

Data Sheet

AD7402

FEATURES

FUNCTIONAL BLOCK DIAGRAM

VDD1

REF

VDD2

10 MHz internal clock rate

16 bits, no missing codes

Signal-to-noise ratio (SNR): 87 dB typical

Effective number of bits (ENOB): 13.5 bits typical

Typical offset drift vs. temperature: 1.7 µV/°C

On-board digital isolator

AD7402

MCLKOUT

(10MHz)

CLK

ENCODER

CLK

DECODER

BUF

CLOCK

VIN+

VIN–

DATA

ENCODER

CLK

DECODER

On-board reference

MDAT

Σ-Δ ADC

Full-scale analog input range: 320 mV

−40°C to +105°C operating range

High common-mode transient immunity: >25 kV/µs

8-lead, wide-body SOIC, with increased creepage package

Slew rate limited output for low electromagnetic

interference (EMI)

GND1

GND2

Figure 1.

Safety and regulatory approvals

UL recognition

5000 V rms for 1 minute per UL 1577

CSA Component Acceptance Notice 5A

VDE Certificate of Conformity

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

_IORM= 1250 V_PEAK

APPLICATIONS

Shunt current monitoring

AC motor controls

Power and solar inverters

Wind turbine inverters

Data acquisition systems

Analog-to-digital and opto-isolator replacements

GENERAL DESCRIPTION

The AD7402¹is a high performance, second-order, Σ-Δ modulator

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

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

Devices, Inc., iCoupler® technology. The AD7402 operates from

a 4.5 V to 5.5 V (V_DD1) power supply and accepts a differential

input signal of 250 mV ( 320 mV full scale). The differential

input is ideally suited to shunt voltage monitoring in high

voltage applications where galvanic isolation is required.

information can be reconstructed with an appropriate digital

filter to achieve 87 dB signal to noise ratio (SNR) at 39 kSPS. The

serial input/output can use a 3 V to 5.5 V or a 3.3 V supply (V_DD2).

The serial interface is digitally isolated. High speed complementary

metal oxide semiconductor (CMOS) technology, combined with

monolithic transformer technology, means the on-chip isolation

provides outstanding performance characteristics, superior to

alternatives such as optocoupler devices. The AD7402 device is

offered in an 8-lead, wide body SOIC package and has an

operating temperature range of −40°C to +105°C.

The analog input is continuously sampled by a high performance

analog modulator, and converted to a ones density, digital

output stream with a data rate of 10 MHz. The original

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

Rev. A

Document Feedback

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 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

Technical Support

www.analog.com

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与AD7402相关器件

型号	品牌	获取价格	描述	数据表
AD7402-8BRIZ	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7402-8BRIZ-RL	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7402-8BRIZ-RL7	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7403	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7403-8BRIZ	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7403-8BRIZ-RL	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7403-8BRIZ-RL7	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7403BRIZ	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7403BRIZ-RL	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator
AD7403BRIZ-RL7	ADI	获取价格	16-Bit, Isolated Sigma-Delta Modulator

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