Part # AD5934 datasheet 

Part Manufacturer: Analog Devices 

Part Description: AD5934 250 kSPS 12Bit Impedance Converter Network Analyzer Data Sheet (Rev. A) 

Part Details:250 kSPS, 12Bit Impedance Converter, Network Analyzer AD5934 FEATURES GENERAL DESCRIPTION Programmable output peaktopeak excitation voltage The AD5934 is a high precision impedance converter system to a maximum frequency of 100 kHz solution that combines an onboard frequency generator with a Programmable frequency sweep capability with 12bit, 250 kSPS, analogtodigital converter (ADC). The serial I2C interface frequency generator allows an external complex impedance to Frequency resolution of 27 bits (<0.1 Hz) be excited with a known frequency. The response signal from Impedance measurement range from 1 k to 10 M the impedance is sampled by the onboard ADC and a discrete Capable of measuring 100 to 1 k with additional circuitry Fourier transform (DFT) is processed by an onboard DSP Phase measurement capability engine. The DFT algorithm returns a real (R) and imaginary (I) System accuracy of 0.5% dataword at each output frequency. 2.7 V to 5.5 V power supply operation Once calibrated, the magnitude of the impedance and relative Temperature range: 40°C to +125°C phase of the impedance at each frequency point along the sweep 16lead SSOP package is easily calculated using the following two equations: 2 + APPLICATIONS Magnitude = 2 R I Electrochemical analysis Phase = tan1(I/R) Bioelectrical impedance analysis A similar device, available from Analog Devices, Inc., is the Impedance spectroscopy AD5933, which is a 2.7 V to 5.5 V, 1 MSPS, 12bit impedance Complex impedance measurement converter, with an internal temperature sensor, available in a Corrosion monitoring and protection equipment 16lead SSOP. Biomedical and automotive sensors Proximity sensing Nondestructive testing Material property analysis Fuel/battery cell condition monitoring FUNCTIONAL BLOCK DIAGRAM MCLK AVDD DVDD DDS CORE DAC 

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