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| 型號： | EVAL-CN0217-EB1Z |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/40頁 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR CN0217 |
| 設計資源： | CN-0217 Circuit Eval Board |
| 標準包裝： | 1 |
| 系列： | Circuits from the Lab™ |
| 主要目的： | 阻抗轉換器 |
| 已用 IC / 零件： | AD5933，AD5934，AD8606 |
| 主要屬性： | 網絡分析器 |
| 次要屬性： | I²C 接口 |
| 已供物品： | 板 |
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1 MSPS, 12-Bit Impedance
Converter, Network Analyzer
Data Sheet
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2005–2013 Analog Devices, Inc. All rights reserved.
FEATURES
Programmable output peak-to-peak excitation voltage
to a maximum frequency of 100 kHz
Programmable frequency sweep capability with
serial I2C interface
Frequency resolution of 27 bits (<0.1 Hz)
Impedance measurement range from 1 kΩ to 10 MΩ
Capable of measuring of 100 Ω to 1 kΩ with additional
circuitry
Internal temperature sensor (±2°C)
Internal system clock option
Phase measurement capability
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
Qualified for automotive applications
APPLICATIONS
Electrochemical analysis
Bioelectrical impedance analysis
Impedance spectroscopy
Complex impedance measurement
Corrosion monitoring and protection equipment
Biomedical and automotive sensors
Proximity sensing
Nondestructive testing
Material property analysis
Fuel/battery cell condition monitoring
GENERAL DESCRIPTION
The AD5933 is a high precision impedance converter system
solution that combines an on-board frequency generator with
a 12-bit, 1 MSPS, 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.
Once calibrated, the magnitude of the impedance and relative
phase of the impedance at each frequency point along the sweep
is easily calculated. This is done off chip using the real and
imaginary register contents, which can be read from the serial
I2C interface.
A similar device, also available from Analog Devices, Inc., is the
AD5934, a 2.7 V to 5.5 V, 250 kSPS, 12-bit impedance converter,
with an internal temperature sensor and is packaged in a 16-
lead SSOP.
FUNCTIONAL BLOCK DIAGRAM
VDD/2
DAC
Z(ω)
SCL
SDA
DVDD
AVDD
MCLK
AGND
DGND
ROUT
VOUT
AD5933
RFB
VIN
05
324
-00
1
1024-POINT DFT
I2C
INTERFACE
IMAGINARY
REGISTER
REAL
REGISTER
OSCILLATOR
DDS
CORE
(27 BITS)
TEMPERATURE
SENSOR
ADC
(12 BITS)
LPF
GAIN
Figure 1.
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