AD9851BRSZRL

Product Overview

Category: Integrated Circuit (IC)

Use: The AD9851BRSZRL is a high-speed direct digital synthesis (DDS) IC. It is commonly used in applications that require precise frequency generation, such as communication systems, test and measurement equipment, and signal processing.

Characteristics: - High-speed DDS with 180 MHz clock rate - 48-bit frequency tuning word - 10-bit phase accumulator - On-chip 10-bit DAC - Serial interface for easy control and programming

Package: The AD9851BRSZRL is available in a small outline integrated circuit (SOIC) package. This package provides good thermal performance and ease of handling during assembly.

Essence: The essence of the AD9851BRSZRL lies in its ability to generate highly accurate and stable frequencies using DDS technology. It offers a wide range of frequency synthesis capabilities with excellent phase noise performance.

Packaging/Quantity: The AD9851BRSZRL is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Clock Rate: 180 MHz
• Frequency Resolution: 0.0291 Hz
• Frequency Range: DC to 70 MHz
• Phase Resolution: 0.0879 degrees
• Supply Voltage: 3.3 V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD9851BRSZRL has a total of 28 pins. Here is a detailed pin configuration:

1. REFOUT
2. REFIN
3. AGND
4. DGND
5. AVDD
6. DVDD
7. I/O RESET
8. I/O UPDATE
9. I/O SCLK
10. I/O SDATA
11. I/O FQ_UD
12. I/O W_CLK
13. I/O D7
14. I/O D6
15. I/O D5
16. I/O D4
17. I/O D3
18. I/O D2
19. I/O D1
20. I/O D0
21. I/O OSK
22. I/O RSET
23. I/O PSEL0
24. I/O PSEL1
25. I/O PSEL2
26. I/O PSEL3
27. I/O PSEL4
28. VREF

Functional Features

• High-speed frequency synthesis with excellent phase noise performance
• Wide frequency range and fine frequency resolution
• Serial interface for easy control and programming
• On-chip DAC for accurate amplitude control
• Low power consumption
• Flexible power supply options

Advantages and Disadvantages

Advantages: - Precise and stable frequency generation - Easy integration into various applications - Wide frequency range and fine resolution - Low power consumption

Disadvantages: - Limited output power capability - Requires external components for filtering and amplification

Working Principles

The AD9851BRSZRL utilizes direct digital synthesis (DDS) technology to generate precise and stable frequencies. It consists of a high-speed clock, a phase accumulator, and a digital-to-analog converter (DAC). The phase accumulator accumulates phase information based on the desired frequency, and the DAC converts the digital signal into an analog waveform. The resulting analog waveform is then filtered and amplified to obtain the desired output frequency.

Detailed Application Field Plans

The AD9851BRSZRL finds extensive use in various applications, including:

1. Communication Systems:

   • Frequency synthesis for wireless communication devices
   • Signal modulation and demodulation
   • Frequency hopping and spread spectrum systems

2. Test and Measurement Equipment:

   • Signal generators
   • Spectrum analyzers
   • Frequency counters

3. Signal Processing:

   • Digital signal processing (DSP) algorithms
   • Radar systems
   • Audio and video signal processing

Detailed and Complete Alternative Models

1. AD9850: Similar to the AD9851BRSZRL, but with a lower clock rate of 125 MHz.
2. AD9833: A lower-cost alternative with a simplified interface and limited frequency range.
3. AD9910: A higher-performance DDS IC with advanced features such as integrated RAM and phase modulation capabilities.

These alternative models offer different specifications and features to suit specific application requirements.

In conclusion, the AD9851BRSZRL is a high-speed DDS IC that provides precise and stable frequency generation for various applications. Its wide frequency range, fine resolution, and easy control make it a popular choice in communication systems, test and measurement equipment, and signal processing applications. While it has limitations in output power capability and requires external components for filtering and amplification, its advantages outweigh these