AD9830AST

Overview

The AD9830AST is a complete Direct Digital Synthesis (DDS) device manufactured by Analog Devices Inc. It integrates a numerically controlled oscillator, a sine look-up table, and a 10-bit digital-to-analog converter on a single CMOS chip. The component supports clock rates up to 50 MHz and offers frequency accuracy of one part in 4 billion. It features parallel loading capabilities, phase modulation, and frequency modulation functions. The device operates with a +5 V power supply and includes a power-down option for low-power applications. It is housed in a 48-pin QFP package.

Feature Summary

• Integrates a 32-bit phase accumulator, sine look-up table, and 10-bit DAC on a single CMOS chip
• Supports direct digital synthesis with clock rates up to 50 MHz
• Provides modulation capabilities including phase modulation and frequency modulation via parallel interface
• Includes an internal voltage reference and full-scale current adjustment control

Applications

• DDS Tuning
• Digital Demodulation
• Signal Generator Applications

Procurement Notes

Verify the specific suffix 'AST' against the manufacturer's official documentation to confirm temperature range and package variant details. Ensure compatibility with the required 48-pin QFP footprint during procurement planning. Confirm RoHS compliance status through the latest datasheet revision or environmental declaration provided by Analog Devices Inc.

Selection Notes

Select this component when a high-speed DDS solution with integrated waveform generation is required. Consider the 50 MHz maximum update rate and 10-bit resolution for signal fidelity needs. Evaluate the parallel interface requirements against available microprocessor resources. Verify that the +5 V supply voltage aligns with the system power architecture.

Part Context

The AD9830 belongs to the family of complete DDS devices from Analog Devices. It serves as a numerically controlled oscillator combining digital signal processing functions with analog output generation. This integration simplifies the design of complex modulation schemes and precise frequency synthesizers compared to discrete component solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.