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AD7628KN

AD7628KN Description

The AD7628KN from Analog Devices Inc. is an 8-bit, dual-channel digital-to-analog converter (DAC) designed for precision analog output applications. Housed in a 20-pin DIP package, this through-hole-mount device operates with dual power supplies (analog and digital) ranging from 10.8V to 15.75V, ensuring compatibility with industrial and high-voltage systems. The AD7628KN features a parallel data interface for straightforward integration into legacy or high-speed control systems, with a fast 400ns settling time for rapid signal generation. Its external reference requirement allows flexibility in voltage scaling, while its ±0.5 LSB INL and ±1 LSB DNL ensure high linearity and accuracy.

AD7628KN Features

• Dual 8-bit DACs: Two independent channels for multi-output applications.
• Wide Supply Range: Supports 10.8V–15.75V for analog/digital domains, ideal for robust industrial environments.
• High-Speed Performance: 400ns settling time enables quick response in dynamic systems.
• Parallel Interface: Simplifies integration with microprocessors or FPGAs.
• Low INL/DNL Errors: ±0.5 LSB INL and ±1 LSB DNL ensure precision in critical applications.
• Through-Hole Package (20-DIP): Facilitates prototyping and legacy system upgrades.
• External Reference: Offers design flexibility for custom voltage ranges.

AD7628KN Applications

The AD7628KN excels in systems requiring high-speed, multi-channel analog outputs with moderate resolution. Key use cases include:

• Industrial Automation: Control of actuators, valve drivers, and PLCs.
• Test & Measurement Equipment: Programmable voltage/current sources.
• Legacy System Upgrades: Retrofit applications where parallel interfaces are preferred.
• Audio/Video Signal Processing: Waveform generation in broadcast equipment.
• Defense/Aerospace: Ruggedized systems benefiting from its wide supply range.

Conclusion of AD7628KN

The AD7628KN is a versatile, obsolete but reliable DAC solution for applications demanding dual-channel output, fast settling, and industrial-grade voltage tolerance. While newer models may offer higher resolution or serial interfaces, the AD7628KN remains a practical choice for legacy designs, high-voltage systems, or cost-sensitive projects requiring proven performance. Its low integral/differential non-linearity and flexible reference design make it suitable for precision analog control, though designers should note its through-hole packaging and parallel interface may limit use in space-constrained or modern embedded systems.