AD5933

更新时间： 2024-02-11 06:27:05

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
20页	689K
描述
1 MSPS 12-Bit Impedance Converter, Network Analyzer

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

AD5933 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SSOP
包装说明：	SSOP,	针数：	16
Reach Compliance Code：	unknown	风险等级：	5.57
模拟集成电路 - 其他类型：	ANALOG CIRCUIT	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e3	长度：	6.2 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	16	最高工作温度：	125 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
座面最大高度：	2 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.7 V	标称供电电压 (Vsup)：	3.3 V
表面贴装：	YES	温度等级：	AUTOMOTIVE
端子面层：	MATTE TIN	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	5.3 mm
Base Number Matches：	1

AD5933 数据手册

Preliminary Technical Data

GENERAL DESCRIPTION

AD5933

Rgain

The AD5933 is a high precision impedance converter system

solution which combines an on board frequency generator with

a 12 Bit 1MSPS 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 FFT processed by an on-board DSP

engine. The FFT algorithm returns two Real (R) and Imaginary

(I) data words. The impedance magnitude and phase is easily

calculated using the following equations:

TF1

Rload

Vdd/8

Magnitude = R²+ I²

Figure 3.

CIRCUIT DESCRIPTION

-1

Phase = Tan (I/R)

The AD5933 has a fully integrated Direct Digital Synthesis

(DDS) core to generate required frequencies. The block requires

a reference clock to provide digitally created sine waves up to

50KHz. This is provided through an external reference clock,

MCLK. This clock is internally divided down by 4 to provide

the reference clock or fMCLK to the DDS.

To determine the actual real impedance value Z(W) , generally a

frequency sweep is performed. The impedance can be

calculated at each point and a frequency vs magnitude plot can

be created.

The internal circuitry of the DDS consists of the following main

sections: a Numerical Controlled Oscillator (NCO), a

Frequency Modulator, SIN ROM and a Digital-to-Analog

Converter.

Gain

NUMERICAL CONTROLLED OSCILLATOR + PHASE

MODULATOR

Frequency

Figure 2.

The main component of the NCO is a 27-bit phase accumulator

which assembles the phase component of the output signal.

The system allows the user to program a 2V PK-PK sinusoidal

signal as excitation to an external load. Output ranges of 1V,

500mV, 200mV can also be programmed. The signal is provided

on chip using DDS techniques. Frequency resolution of 27 bits

(less than 0.1HZ) can be achieved. The clock for the DDS can

be generated from an external reference clock, an internal RC

oscillator or an internal PLL. The PLL has a gain stage of 520

and typically needs a reference clock of 32KHz on the MCLK

pin.

Figure 4

Continuous time signals have a phase range of 0 to 2pi. Outside

this range of numbers, the sinusoid functions repeat themselves

in a periodic manner. The digital implementation is no

different. The accumulator simply scales the range of phase

numbers into a multi-bit digital word. The phase accumulator

in the DDS is implemented with 28 bits. Therefore, 2pi = 227.

Likewise, the DPhase term is scaled into this range of numbers

0 < DPhase < 227 – 1. Making these substitutions into the

equation above

OUTPUT STAGE

The output stage of the AD5933, shown in diagram below,

provides a constant output frequency or frequency sweep

function which has a programmable output voltage of

2/1/0.5/0.2V. The frequency sweep sequence is pre-progammed

through the I2C interface. An I2C command is used to start the

excitation sequence.

f = DPhase x fMCLK/227

where 0 < DPhase < 227 - 1.

(Note. fmclk = MCLK/4)

The input to the phase accumulator (i.e., the phase step) is

selected from the frequency register. NCOs inherently generate

continuous phase signals, thus avoiding any output

discontinuity when switching between frequencies.

Rev. PrA | Page 7 of 20

1...4 5 678 9 10...20

下载PDF

与AD5933相关器件

型号	品牌	描述	获取价格	数据表
AD5933BRSZ-U1	ADI	IC SPECIALTY ANALOG CIRCUIT, PDSO16, LEAD FREE, MO-150AC, SSOP-16, Analog IC:Other	获取价格
AD5933WYRSZ-REEL7	ADI	1 MSPS, 12-Bit Impedance Converter, Network Analyzer	获取价格
AD5933YRSZ	ADI	1 MSPS, 12-Bit Impedance Converter, Network Analyzer	获取价格
AD5933YRSZ-REEL7	ADI	1 MSPS, 12-Bit Impedance Converter, Network Analyzer	获取价格
AD5934	ADI	250 kSPS, 12-Bit Impedance Converter, Network Analyzer	获取价格
AD5934BRSZ-U1	ADI	IC SPECIALTY ANALOG CIRCUIT, PDSO16, LEAD FREE, MO-150AC, SSOP-16, Analog IC:Other	获取价格

与AD5933相关文章

MAX6675资料手册参数详解、引脚配置说明
2024-05-13

11
LM258引脚图及功能介绍、主要参数分析
2024-05-13

7
CD4052资料手册参数详解、引脚配置说明
2024-05-13

7
一文带你了解TPS5430资料手册分析：参数介绍、引脚配置说明
2024-05-13

6

产品中心

服务支持

精选活动

关于我们

帮助中心

AD5933

AD5933 技术参数

AD5933 数据手册

与AD5933相关器件

与AD5933相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AD5933

AD5933 技术参数

AD5933 数据手册

与AD5933相关器件

与AD5933相关文章

您还可以找

您在本页遇到什么问题？