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AD5933: 1 MSPS, 12-Bit Impedance Converter, Network Analyzer Data Sheet (Rev. F)12/22/2004PDF644 K
Alternative Parts
Overview
Features and Benefits
- Chinese data sheet available
- 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
Product Details
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
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
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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Software & Systems Requirements
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Reference Designs (1)
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Support & Discussions
AD5933 Discussions
RE: I need a reference circuit for 4_wire the impedance measurement using AD5934, range 50 to 250 ohm.
1 week(s) ago in Direct Digital Synthesis (DDS)
RE: AD5933 and RENESAS microcontroller are connected by I2C communication. Both SDA and SCL are connected with 10KΩ pull-up resistors, and bypass capacitors are not attached. During the evaluation test, when I briefly shorted both ends of the pull-up resi
5 week(s) ago in Direct Digital Synthesis (DDS)
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