TMC3503KRC80

Digital To Analog Converters Overview

The Fairchild Semiconductor TMC3503KRC80 is a high-speed triple 8-bit digital-to-analog converter designed for video and graphics applications. It operates with a single +3.3V±5% power supply and features TTL-compatible inputs. The device provides three independent current outputs, each capable of driving a 37.5Ω or 75Ω load with a 1.0V peak-to-peak swing. Key electrical specifications include an 8-bit resolution, ±0.5 LSB linearity error, and low glitch energy. The KRC80 suffix denotes the 80 Msps speed grade, enabling data conversion rates up to 80 megapixels per second. Internal bandgap voltage references ensure stability without external components.

Digital To Analog Converters Feature Summary

• Triple output architecture for generating analog RGB signals from digital inputs
• Integrated internal bandgap voltage reference eliminating external component requirements
• Double-buffered data inputs to minimize signal distortion during updates
• Ded SYNC and BLANK control inputs for precise timing synchronization

Digital To Analog Converters Applications

• Generating analog RGB signals for computer displays and video monitors
• Video signal conversion systems requiring high-speed DAC performance
• Broadcast television equipment utilizing digital video processing
• Image processing systems needing low-glitch analog output generation

Digital To Analog Converters Procurement Notes

Verify the specific KRC80 suffix indicates the 80 Msps speed grade when sourcing. Confirm the package type matches the required PCB layout, as variations exist within the series. Ensure the design supports the single +3.3V supply requirement. Check for availability of the original manufacturer or authorized distributors given the component's age. Validate that the 8-bit resolution meets the system's video quality standards.

Digital To Analog Converters Selection Notes

Select this component when designing systems requiring triple synchronized video DACs with low power consumption. The 80 Msps speed grade suits high-resolution display interfaces. Consider the 8-bit resolution limit for applications not demanding higher color depth. The single-supply operation simplifies power management compared to dual-supply alternatives. Evaluate the 75Ω output drive capability against the specific transmission line impedance requirements of the target display interface.

Digital To Analog Converters Part Context

The TMC3503 belongs to Fairchild's family of triple video D/A converters, serving as an enhancement to earlier models like the ADV7120. It integrates functions previously requiring multiple discrete components. The series offers different speed grades (30, 50, and 80 Msps) to match various bandwidth needs. This specific part targets professional video and graphics markets where signal integrity and low power are critical constraints.

Digital To Analog Converters Replacement Considerations

Direct replacements may be limited due to the specialized nature of triple video DACs. Verify pin compatibility if substituting with other Fairchild or competitor triple DACs. Ensure the replacement supports the same 3.3V supply voltage and TTL input levels. Check if the alternative offers comparable linearity and glitch energy specifications.