Analog Devices DDS Chips: An Overview

Analog Devices is well-known for its Direct Digital Synthesizer (DDS) chips, and they’ve recently released some new DDS offerings. These chips are quite popular due to their performance and versatility.

Analog Devices DDS chips generally offer a combination of high-speed operation, fine frequency resolution (small step size), and good phase noise performance. The AD9851 DDS chip, for instance, is a popular choice in many different applications.

Applications of DDS Chips

DDS chips find use in a wide array of applications, including:

• Frequency synthesizers
• Clock and timing circuits
• Oscillators
• Transmitters

For a deeper dive into the fundamentals, check out DDS basics.

Key Factors for Selecting an Analog Devices DDS Chip

Choosing the right DDS chip depends on the specific requirements of your application. Here are some important factors to consider:

• Number of channels: How many independent frequency sources do you need?
• Clock input frequency (max.): What’s the maximum clock frequency the chip can handle?
• Reference clock multiplier: Does the chip have an internal reference clock multiplier? This can simplify your clocking design.
• Tuning word width (bits): This determines the frequency resolution of the DDS. A wider tuning word allows for finer frequency steps.
• DAC resolution: The resolution of the Digital-to-Analog Converter (DAC) affects the spurious-free dynamic range (SFDR) of the output signal.
• Programming interface: Is the chip programmed via a serial (e.g., SPI, I2C) or parallel interface?
• Supply voltage: What voltage is required to power the chip?

About Analog Devices

Founded in 1965, Analog Devices has established itself as a leader in the design, manufacturing, and marketing of analog, digital, and mixed-signal integrated circuits. They serve a diverse range of engineering fields and market segments, including:

• Test and Measurement
• Communications
• Defense
• Aerospace
• Automotive
• Consumer and Energy Products
• Healthcare
• Security

Analog Devices offers a broad portfolio of products, spanning areas such as:

• RF and Microwave
• Communications
• Electronics
• Signal Processing

Website: www.analog.com