DAC121S101QCMK/NOPB

Digital To Analog Converters Overview

The DAC121S101QCMK/NOPB is a 12-bit digital-to-analog converter manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It features a single channel with a sampling rate of 1.8 MS/s and a settling time of 8 µs. The device operates on analog and digital supply voltages ranging from 2.7 V to 5.5 V. It supports multiple serial interfaces including SPI, QSPI, Microwire, DSP, and 3-Wire. Key performance metrics include a DNL of 1 LSB, INL of +/- 2.6 LSB, and gain error of 1% FSR. Power consumption is 640 µW. It is housed in an SOT-23-THIN-6 package and is AEC-Q100 qualified for automotive applications.

Digital To Analog Converters Feature Summary

• Rail-to-rail voltage output capability enabled by an on-chip output amplifier.
• Power-on reset circuit ensures the DAC output initializes to zero volts.
• Compatible with standard SPI, QSPI, MICROWIRE, and DSP serial interfaces.
• Low power operation suitable for battery-powered equipment.

Digital To Analog Converters Applications

• Battery-operated portable electronic devices
• Automotive systems requiring AEC-Q100 qualification
• Industrial control signal generation

Digital To Analog Converters Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor, when sourcing this component. Confirm the specific suffix NOPB indicates lead-free compliance and RoHS adherence. Ensure the AEC-Q100 qualification status matches the requirements for automotive-grade deployment. Cross-reference the SOT-23-THIN-6 package dimensions against the design footprint to ensure mechanical compatibility during procurement.

Digital To Analog Converters Selection Notes

Select this component when a 12-bit resolution is required alongside rail-to-rail output swing in a compact SOT-23-THIN-6 package. It serves as a direct replacement for legacy parts such as the AD5320 and DAC7512. Consider the 1.8 MS/s data rate and 8 µs settling time for bandwidth requirements. Verify that the 2.7 V to 5.5 V supply range aligns with the system's power architecture and that the serial interface protocol matches the host controller.

Digital To Analog Converters Part Context

This device belongs to the DAC121S101 family, which includes pin-compatible variants like the DAC081S101 (8-bit) and DAC101S101 (10-bit). Originally developed by National Semiconductor, the product line was integrated into Texas Instruments' portfolio following their acquisition. The DAC121S101 series provides a scalable solution for general-purpose digital-to-analog conversion needs across various industrial and consumer applications.

Digital To Analog Converters Replacement Considerations

Public documentation confirms the DAC121S101 is a direct replacement for the AD5320 and the DAC7512. These substitutes share functional compatibility within the same application context.