Overview
The AD9831AST-REEL, produced by Analog Devices Inc., is a Direct Digital Synthesizer (DDS) integrated circuit. This device combines a Numerical Controlled Oscillator (NCO), a sine look-up table, frequency and phase modulators, and a 10-bit Digital-to-Analog Converter (DAC) on a single chip. It is designed to provide a high level of integration for RF and communications system designers. The AD9831AST-REEL operates in a voltage supply range of 2.97V to 5.5V and can function over an operating temperature range of -40°C to 85°C, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Tuning Word Width | 32 | bits |
| Voltage Supply | 2.97 to 5.5 | V |
| Operating Temperature | -40 to 85 | °C |
| DAC Resolution | 10 | bits |
| Mounting Type | Surface Mount | |
| Reference Voltage | 1.21 | V (nominal) |
| Full-Scale DAC Current Adjustment | 12.5 × VREFIN/RSET |
Key Features
- Numerical Controlled Oscillator (NCO): The AD9831AST-REEL employs an NCO, a sine look-up table, and a 10-bit DAC to generate high-quality sine waves.
- Frequency and Phase Modulation: The device supports frequency and phase modulation, allowing for dynamic control over the output signal.
- Adjustable Full-Scale DAC Current: The full-scale output current of the DAC can be adjusted using an external resistor (RSET), enabling optimization for different load requirements.
- On-Board Reference Voltage: The device includes an on-board reference voltage of 1.21 V nominal, which can be used internally or externally.
- Low Power Consumption: Operates within a voltage supply range of 2.97V to 5.5V, making it suitable for power-sensitive applications.
Applications
- RF and Communications Systems: Ideal for use in RF and communications systems where precise frequency and phase control are required.
- Signal Generation: Suitable for generating high-quality sine waves in various signal generation applications.
- Test and Measurement Equipment: Can be used in test and measurement equipment to provide stable and adjustable signal sources.
- Industrial Control Systems: Useful in industrial control systems that require precise frequency and phase modulation.
Q & A
- What is the AD9831AST-REEL?
The AD9831AST-REEL is a Direct Digital Synthesizer (DDS) integrated circuit produced by Analog Devices Inc.
- What is the voltage supply range of the AD9831AST-REEL?
The voltage supply range is 2.97V to 5.5V.
- What is the resolution of the DAC in the AD9831AST-REEL?
The DAC resolution is 10 bits.
- How can the full-scale DAC current be adjusted?
The full-scale DAC current can be adjusted using an external resistor (RSET) according to the formula: IOUTFULL-SCALE = 12.5 × VREFIN/RSET.
- What is the operating temperature range of the AD9831AST-REEL?
The operating temperature range is -40°C to 85°C.
- Does the AD9831AST-REEL support frequency and phase modulation?
Yes, the device supports both frequency and phase modulation.
- What type of mounting does the AD9831AST-REEL use?
The AD9831AST-REEL uses surface mount technology.
- What is the purpose of the on-board reference voltage?
The on-board reference voltage of 1.21 V nominal can be used internally or externally to provide a stable reference for the DAC.
- How does the AD9831AST-REEL generate its output signal?
The device generates its output signal using a Numerical Controlled Oscillator (NCO), a sine look-up table, and a 10-bit DAC.
- What are some common applications of the AD9831AST-REEL?
Common applications include RF and communications systems, signal generation, test and measurement equipment, and industrial control systems.
