LTC7543GKN#PBF

Digital To Analog Converters Overview

The LTC7543GKN#PBF is a serial-input, 12-bit multiplying digital-to-analog converter (DAC) in a 16-lead PDIP package. It serves as an improved direct replacement for the AD7543 and DAC-8143, offering superior accuracy and stability over temperature and supply variations. The device features a low-cost design with ±0.5LSB DNL and INL over the operating range. Key specifications include a maximum gain error of 1LSB, eliminating the need for adjustment, and an asynchronous clear input for initialization. It supports four-quadrant multiplication and operates within an extended industrial temperature range of –40°C to 85°C.

Digital To Analog Converters Feature Summary

• Improved pin-compatible replacement for AD7543 and DAC-8143 with better accuracy and stability.
• DNL and INL specified at ±0.5LSB over the full temperature range.
• Maximum gain error of 1LSB over temperature eliminates external adjustment requirements.
• Asynchronous CLEAR input allows initialization to a known state.

Digital To Analog Converters Applications

• Process control and industrial automation systems
• Remote microprocessor-controlled systems
• Digitally controlled filters and power supplies
• Programmable gain amplifiers
• Automatic test equipment

Digital To Analog Converters Procurement Notes

Verify that the specific order includes the #PBF suffix to ensure compliance with RoHS directives. Confirm the package type corresponds to the 16-lead PDIP form factor required for the target PCB footprint. Check for any specific grade requirements if military-grade parts are needed, as standard commercial grades are listed separately.

Digital To Analog Converters Selection Notes

Select the LTC7543GKN#PBF when a serial interface is preferred over parallel options like the LTC7541A. Ensure the application requires a current output DAC suitable for external buffering or transimpedance conversion. Verify that the 12-bit resolution and 1µs settling time meet the system's performance criteria compared to faster or higher-resolution alternatives.

Digital To Analog Converters Part Context

This component belongs to the LTC7543/LTC8143 family of improved industry-standard serial 12-bit multiplying DACs. While the LTC8143 variant adds a daisy-chain serial data output, the LTC7543 focuses on single-channel operation with enhanced performance metrics over its predecessors. It is designed to integrate easily into existing designs requiring reliable digital-to-analog conversion.

Digital To Analog Converters Replacement Considerations

The LTC7543GKN#PBF is explicitly documented as an improved direct replacement for the AD7543 and DAC-8143. Designers upgrading from these legacy parts should benefit from tighter timing specifications, lower output capacitance, and reduced sensitivity to output amplifier offset without requiring schematic changes.