AD7628KN

Digital To Analog Converters Overview

The AD7628KN is a monolithic dual 8-bit digital-to-analog converter featuring excellent DAC-to-DAC matching. It operates from a +12 V to +15 V power supply and includes separate on-chip latches for each DAC, allowing easy microprocessor interface via a common 8-bit TTL/CMOS compatible input port. The device supports four-quadrant multiplication with separate reference inputs and feedback resistors. Key static performance specifications include ±1/2 LSB relative accuracy, ±1 LSB differential nonlinearity, and ±2 LSB gain error at +25°C. Power dissipation is low at 20 mW typical.

Digital To Analog Converters Feature Summary

• On-chip latches for both DACs enable latch-free operation without protection Schottkys
• TTL/CMOS compatible digital inputs over the +12 V to +15 V supply range
• DACs matched to 1% due to simultaneous fabrication on the same chip
• Supports four-quadrant multiplication with independent reference inputs

Digital To Analog Converters Applications

• Disk Drives
• Programmable Filters
• X-Y Graphics
• Gain/Attenuation Control

Digital To Analog Converters Procurement Notes

Verify the specific grade suffix 'K' corresponds to the commercial temperature range of –40°C to +85°C when ordering. Confirm package type N-20 (Plastic DIP) matches the target PCB footprint. Ensure supply voltages remain within the +10.8 V to +15.75 V absolute maximum ratings to prevent damage. Check for ESD sensitivity precautions during handling.

Digital To Analog Converters Selection Notes

Select the AD7628KN for applications requiring precise tracking between two channels, such as stereo attenuation or X-Y plotting. The K-grade variant is suitable for commercial environments operating between –40°C and +85°C. For industrial or extended temperature ranges, consider the B or T grades respectively. Ensure the system can provide the required +12 V to +15 V analog and digital supplies.

Digital To Analog Converters Part Context

The AD7628 belongs to Analog Devices' family of CMOS dual 8-bit buffered multiplying DACs. The KN suffix specifically denotes the Plastic DIP-20 package option with commercial temperature grading. This component shares architectural similarities with the MX7628 but differs in specific electrical characteristics and packaging options within the broader data converter portfolio.

Digital To Analog Converters Replacement Considerations

The MX7628KN+ is a related part number from the Maxim Integrated lineage, now under Analog Devices. Verify pin compatibility and specific electrical tolerances before substitution. Other packages in the AD7628 family include KP (PLCC), KR (SOIC), and BQ/TQ variants for different temperature ranges.