AD5934YRSZ-REEL7

Overview

The AD5934YRSZ-REEL7 is a high-precision impedance converter system solution manufactured by Analog Devices Inc. It integrates an on-board frequency generator with a 12-bit, 250 kSPS analog-to-digital converter (ADC). The device features a 27-bit Direct Digital Synthesis (DDS) core capable of generating excitation signals up to 100 kHz with a resolution below 0.1 Hz. It operates within a supply voltage range of 2.7 V to 5.5 V and supports an industrial temperature range from −40°C to +125°C. The component utilizes a serial I2C interface for control and data retrieval, housed in a 16-lead SSOP package.

Feature Summary

• Integrates a programmable frequency generator and a 12-bit ADC for complete impedance measurement systems
• Performs discrete Fourier transform (DFT) processing internally to output real and imaginary data words
• Supports programmable frequency sweeps with user-defined start frequencies and increments
• Features a serial I2C interface for configuration and data access

Applications

• Electrochemical analysis
• Bioelectrical impedance analysis
• Impedance spectroscopy
• Complex impedance measurement
• Corrosion monitoring and protection equipment

Procurement Notes

Verify the specific ordering suffix REEL7 confirms tape-and-reel packaging rather than tube packaging when sourcing components. Confirm that the Y-grade designation matches the required extended industrial temperature range specifications for the intended application environment. Ensure compatibility with standard I2C bus timing requirements during integration planning.

Selection Notes

Select this component when a combined DDS and ADC solution is required for impedance profiling without external signal generation hardware. Compare against the AD5933 if higher sampling rates are necessary, as the AD5934 is limited to 250 kSPS. Consider the 12-bit resolution limits for applications requiring higher dynamic range or precision measurements beyond the specified system accuracy.

Part Context

This part belongs to the AD5934 series of impedance converters from Analog Devices. It serves as a specialized data acquisition front-end designed specifically for network analyzer and impedance measurement applications. The device simplifies system design by combining signal generation, digitization, and digital signal processing into a single integrated circuit.

Replacement Considerations

The AD5933 is a similar device offering 1 MSPS sampling speed and an internal temperature sensor. Verify pinout compatibility and software register mapping differences before substitution.