LTC8143EN#PBF

Digital To Analog Converters Overview

The LTC8143EN#PBF is a serial-input, 12-bit multiplying digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It serves as a pin-compatible replacement for the AD7543 and DAC-8143, offering improved accuracy and stability over temperature and supply variations. The device features a daisy-chainable 3-wire serial interface with an asynchronous clear input for initialization. Key electrical specifications include a maximum gain error of ±1 LSB over the operating range, integral nonlinearity (INL) and differential nonlinearity (DNL) of ±0.5 LSB, and a settling time of 0.25 µs. It operates on a single 5V supply within the extended industrial temperature range of –40°C to +85°C.

Digital To Analog Converters Feature Summary

• Direct pin-compatible replacement for AD7543 and DAC-8143 with enhanced accuracy and lower output capacitance.
• Daisy-chainable 3-wire serial interface allowing multiple DAC systems to be controlled via SRI and SRO pins.
• Asynchronous CLEAR input initializes the DAC register to all zeros without affecting the input shift register.
• ±0.5 LSB INL and DNL over temperature, eliminating the need for external gain adjustment.

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify that the specific EN suffix corresponds to the E-grade performance characteristics, particularly regarding gain error limits and leakage current, as defined in the manufacturer's accuracy tables. Confirm package compatibility with the 16-pin PDIP footprint before integration into existing PCB layouts designed for legacy AD7543 or DAC-8143 components.

Digital To Analog Converters Selection Notes

Select the LTC8143EN#PBF when a 12-bit multiplying DAC with serial interface and daisy-chaining capability is required. Ensure the application supports the 3-wire synchronous protocol and utilizes an external reference voltage up to ±25V. This component is suitable for designs needing low power consumption (2 mA typical) and robust performance across the –40°C to +85°C industrial temperature range.

Digital To Analog Converters Part Context

The LTC8143 belongs to the LTC7543/LTC8143 family of serial multiplying DACs. While the LTC7543 lacks the serial data output (SRO) pin, the LTC8143 includes it to facilitate multi-channel cascading. Both share identical pinouts and core functionality, differing primarily in the ability to chain devices. The EN variant specifies the commercial/industrial grade performance within the 16-lead PDIP package.

Digital To Analog Converters Replacement Considerations

The datasheet explicitly identifies the LTC8143 as a superior direct replacement for the DAC-8143 and AD7543 due to tighter timing specifications and better stability. No other cross-model substitutes are listed in the provided documentation.