The DAC90BG is a high-speed, 10-bit digital-to-analog converter (DAC) manufactured by Burr-Brown, which is now part of Texas Instruments (TI). It is designed for high-performance applications requiring fast conversion rates and excellent dynamic performance. It is commonly used in communications equipment, test and measurement instruments, and video processing systems.

Applications

• Direct Digital Synthesis (DDS)
• Arbitrary Waveform Generators
• Video Reconstruction
• ATE (Automatic Test Equipment)
• Communications Transmitters
• Medical Imaging

Features

• 10-bit Resolution
• Conversion rate: Up to 165 MHz
• Low Glitch Energy
• Single Supply Operation (+5V)
• Differential Current Outputs
• Internal Bandgap Reference
• Small Signal Settling Time: 10ns

Benefits

• High-Speed Conversion: Enables generation of high-frequency signals for demanding applications.
• Excellent Dynamic Performance: Provides accurate signal reproduction with low distortion.
• Low Glitch Energy: Minimizes unwanted spurious signals during conversion.
• Simplified System Design: Single-supply operation and internal reference reduce external component count.
• Versatile Output Options: Differential current outputs allow for flexible interfacing to various analog circuits.
• Improved Signal Integrity: Fast settling time ensures accurate signal reconstruction.

Additional Details

The DAC90BG utilizes a segmented current source architecture to achieve high speed and low glitch energy. The internal bandgap reference provides a stable and accurate voltage reference for the conversion process. The differential current outputs can be configured for single-ended or differential operation, allowing for optimal performance in different applications. Careful layout and decoupling techniques are essential to achieve the specified performance. A heat sink may be required in some applications depending on operating conditions. The input is compatible with TTL and CMOS logic levels.

The part number DAC90BG indicates a 10-bit DAC from the DAC90 series. The 'BG' suffix typically refers to the package type and temperature range.