AD9851BRS

AD9851BRS

Product Overview

Category: Integrated Circuit (IC)

Use: The AD9851BRS is a high-speed direct digital synthesis (DDS) IC that generates precise and stable analog waveforms. It is commonly used in applications such as frequency synthesis, waveform generation, and signal modulation.

Characteristics: - High-speed DDS with 180 MHz clock rate - 10-bit digital-to-analog converter (DAC) - Programmable phase and frequency tuning - Serial interface for easy control and configuration

Package: The AD9851BRS is available in a small outline integrated circuit (SOIC) package, which provides ease of integration into various electronic systems.

Essence: The essence of the AD9851BRS lies in its ability to generate accurate and versatile analog waveforms using digital techniques. This allows for precise control and manipulation of signals in a wide range of applications.

Packaging/Quantity: The AD9851BRS is typically sold in reels or tubes, containing a quantity of 250 units per package.

Specifications

• Clock Rate: Up to 180 MHz
• Resolution: 32 bits
• Frequency Range: DC to 70 MHz
• Output Amplitude Range: 0.2 Vpp to 2.4 Vpp
• Power Supply: 3.3 V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AD9851BRS has a total of 28 pins. The detailed pin configuration is as follows:

1. REFOUT
2. REFIN
3. DGND
4. AGND
5. VDD
6. VDD
7. VDD
8. VDD
9. D7
10. D6
11. D5
12. D4
13. D3
14. D2
15. D1
16. D0
17. SDATA
18. SCLK
19. RESET
20. FQ_UD
21. W_CLK
22. NC
23. NC
24. NC
25. NC
26. NC
27. NC
28. VDD

Functional Features

• High-speed frequency synthesis with excellent phase noise performance
• Programmable phase and frequency tuning for versatile waveform generation
• Serial interface for easy control and configuration
• Low power consumption for energy-efficient operation
• Wide operating temperature range for various environments

Advantages and Disadvantages

Advantages: - High-speed DDS capability - Precise and stable analog waveform generation - Versatile programmability - Easy integration with serial interface - Low power consumption

Disadvantages: - Limited frequency range compared to some other DDS ICs - Requires external components for complete functionality

Working Principles

The AD9851BRS utilizes direct digital synthesis (DDS) techniques to generate analog waveforms. It consists of a high-speed clock generator, a phase accumulator, a digital-to-analog converter (DAC), and a reconstruction filter. The phase accumulator and DAC work together to produce precise and stable analog waveforms based on the input frequency and phase data.

Detailed Application Field Plans

The AD9851BRS finds applications in various fields, including: 1. Communications: Frequency synthesis for wireless communication systems. 2. Test and Measurement: Waveform generation for signal analysis and testing equipment. 3. Audio Systems: Generation of audio signals for musical instruments and sound systems. 4. Radar Systems: Signal modulation for radar applications. 5. Medical Equipment: Precise waveform generation for medical imaging and diagnostic devices.

Detailed and Complete Alternative Models

1. AD9833: A lower-cost alternative with a narrower frequency range but similar functionality.
2. AD9959: A higher-end alternative with extended frequency range and advanced features.
3. AD9850: An economical alternative with lower resolution but suitable for basic waveform generation.

These alternative models offer different trade-offs in terms of cost, performance, and specific application requirements.

In conclusion, the AD9851BRS is a high-speed DDS IC that provides precise and stable analog waveform generation. Its versatile programmability and ease of integration make it suitable for various applications in communications, test and measurement, audio systems, radar systems, and medical equipment. While it has some limitations in terms of frequency range and external component requirements, there are alternative models available to suit different needs.