Datasheet > EVAL-AD5934EB

EVAL-AD5934EB

更新时间： 2024-01-24 17:40:32

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
32页	520K
描述
250 kSPS, 12-Bit Impedance Converter, Network Analyzer

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中文翻译

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数据手册

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EVAL-AD5934EB 数据手册

250 kSPS, 12-Bit Impedance Converter,

Network Analyzer

AD5934

FEATURES

GENERAL DESCRIPTION

Programmable output peak-to-peak excitation voltage

to a max frequency of 100 kHz

Programmable frequency sweep capability with

serial I²C® interface

Frequency resolution of 27 bits (<0.1 Hz)

Impedance measurement range from 100 Ω to 10 MΩ

Phase measurement capability

The AD5934 is a high precision impedance converter system

solution which combines an on-board frequency generator with

a 12-bit, 250 kSPS, analog-to-digital converter (ADC). The

frequency generator allows an external complex impedance to

be excited with a known frequency. The response signal from

the impedance is sampled by the on-board ADC and a discrete

Fourier transform (DFT) is processed by an on-board DSP

engine. The DFT algorithm returns a real (R) and imaginary (I)

data-word at each output frequency.

System accuracy of 0.5%

2.7 V to 5.5 V power supply operation

Temperature range −40°C to +125°C

16-lead SSOP package

The magnitude of the impedance and relative phase of the

impedance at each frequency point along the sweep is easily

calculated using the following two equations:

APPLICATIONS

Electrochemical analysis

Bioelectrical impedance analysis

Impedance spectroscopy

Complex impedance measurement

Corrosion monitoring and protection equipment

Biomedical and automotive sensors

Proximity sensing

Magnitude= R + I

Phase =Tan⁻¹(I / R)

Table 1. Related Devices

Part No.

Description

Nondestructive testing

Material property analysis

AD5933

2.7 V to 5.5 V. 1 MSPS, 12-bit impedance, with

internal temperature sensor, 16-lead SSOP.

Fuel/battery cell condition monitoring

FUNCTIONAL BLOCK DIAGRAM

MCLK

AVDD

DVDD

DDS

CORE

DAC

(27 BITS)

VOUT

OUT

SCL

SDA

I C

INTERFACE

Z(ω)

AD5934

REAL

IMAGINARY

RFB

VIN

1024-POINT DFT

ADC

(12 BITS)

GAIN

LPF

VDD/2

AGND

DGND

Figure 1.

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

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

Fax: 781.461.3113

www.analog.com

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