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Product Detailed Parameters
- Description：IC DDS 10BIT 25MHZ CMOS 48-TQFP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Resolution (Bits)：10 b
- Master fclk：25 MHz
- Tuning Word Width (Bits)：32 b
- Voltage - Supply：2.97V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：48-LQFP
- Supplier Device Package：48-LQFP (7x7)
- Grade：-
- Qualification：-
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Overview
The AD9831AST-REEL is a Direct Digital Synthesizer (DDS) numerically controlled oscillator. It integrates a phase accumulator, sine look-up table, and 10-bit D/A converter. The device supports clock frequencies up to 25 MHz and enables both phase modulation and frequency modulation. It operates on supply voltages ranging from 2.97 V to 5.5 V. The component utilizes a parallel interface for data loading and features a 48-pin LQFP package.
Feature Summary
- Integrates a phase accumulator, sine look-up table, and 10-bit D/A converter within a single CMOS chip.
- Supports direct digital synthesis with capabilities for both phase modulation and frequency modulation.
- Features a parallel microprocessor interface for loading frequency and phase control words.
- Includes external control options for power-down modes via dedicated pins.
Applications
- Direct Digital Synthesis waveform generation
- Frequency and phase modulation signal sources
- Evaluation board integration for DDS development
Procurement Notes
Verify the specific ordering suffix against manufacturer documentation to confirm package type and reel specifications. Ensure compatibility with required voltage levels and interface logic before procurement. Confirm availability status as product lifecycles may change.
Selection Notes
Select this component for applications requiring precise frequency and phase control using a parallel interface. Consider the 25 MHz maximum clock speed and 10-bit resolution when designing signal generation circuits. Verify power supply requirements and thermal management for the LQFP package.
Part Context
The AD9831 is part of Analog Devices' Direct Digital Synthesizer family. It serves as a numerically controlled oscillator designed for high-performance signal generation. The AST variant denotes a specific package and temperature range configuration within the broader AD9831 product line.
Replacement Considerations
Consult official cross-reference lists for verified substitutes. Ensure replacement parts match the 48-pin LQFP footprint and support similar clock speeds and modulation capabilities.
