DAC8742HPBSR

Specialized Overview

The DAC8742HPBSR is a high-precision digital-to-analog converter (DAC) from the DAC874xH family, designed for industrial process control applications. It integrates a HART and FOUNDATION Fieldbus/PROFIBUS PA modem with a 16-bit voltage-output DAC. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V. It features an internal reference and supports serial communication interfaces including SPI and I²C. The component is housed in a small VQFN package, facilitating compact PCB layouts for field devices requiring robust analog output and simultaneous digital communication capabilities.

Specialized Feature Summary

• Integrated modem supporting HART, FOUNDATION Fieldbus, and PROFIBUS PA protocols for simultaneous data transmission and analog output
• High-resolution 16-bit DAC with low noise characteristics suitable for precision instrumentation
• On-chip internal voltage reference reducing external component count and board space
• Flexible serial interface compatibility with standard microcontroller connections

Specialized Applications

• Smart transmitters in industrial automation systems
• Process control loops requiring HART overlay communication
• FOUNDATION Fieldbus and PROFIBUS PA field instruments
• Precision current loop drivers with digital diagnostics

Specialized Procurement Notes

Verify the specific suffix HPBSR indicates tape-and-reel packaging when sourcing. Confirm the operating temperature range matches your environmental requirements. Ensure the voltage supply aligns with the 2.7 V to 5.5 V specification. Check for RoHS compliance status as per the latest manufacturer documentation. Validate pinout compatibility if replacing existing designs.

Specialized Selection Notes

Select this component when both high-accuracy analog output and multi-protocol digital communication are required in a single device. Compare against the DAC8740H or DAC8742H variants based on package type and reel configuration needs. Consider the integrated modem functionality to simplify design by removing separate communication ICs. Evaluate power consumption constraints against the 5.5 V maximum supply limit.

Specialized Part Context

This part belongs to the DAC874xH series, which combines DAC performance with industrial fieldbus modems. It complements other Texas Instruments process control components like isolated amplifiers and precision references. The HPBSR variant specifically denotes the plastic quad flat no-lead package with reel packaging, distinct from the tube-packaged DAC8742HPBS.

Specialized Replacement Considerations

Direct substitutes include the DAC8742HPBS for identical functionality in tube packaging. The DAC8740H offers similar modem features but may differ in specific electrical parameters or package options. Verify pin-to-pin compatibility and software register compatibility before swapping.