DAC101C081CIMK/NOPB

Digital To Analog Converters Overview

The DAC101C081CIMK/NOPB is a single-channel, 10-bit voltage-output digital-to-analog converter manufactured by Texas Instruments. It operates from a supply voltage range of 2.7 V to 5.5 V and utilizes the supply voltage as its internal reference. The device features an I2C-compatible 2-wire serial interface supporting Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes. Key electrical specifications include a maximum integral non-linearity (INL) of ±2 LSB, a maximum differential non-linearity (DNL) of +0.3/-0.2 LSB, and a typical settling time of 6 µs. Power consumption is typically 380 µW at 3 V and 730 µW at 5 V in normal operation.

Digital To Analog Converters Feature Summary

• Rail-to-rail voltage output amplifier providing full dynamic range relative to the supply voltage.
• I2C-compatible serial interface with pin-selectable addressing for multiple devices on a single bus.
• Integrated power-on reset circuit ensures the DAC output initializes to zero volts upon startup.
• Configurable power-down mode reduces current consumption to less than one microWatt.

Digital To Analog Converters Applications

• Industrial process control systems
• Portable battery-operated instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources

Digital To Analog Converters Procurement Notes

Verify the specific package variant against the datasheet orderable addendum, as the CIMK suffix corresponds to the SOT-23-THIN-6 package. Confirm that the application design accommodates the use of the supply voltage as the reference source, as this model lacks a dedicated external reference pin found in other family members. Ensure the PCB layout adheres to the thermal and grounding guidelines specified in the documentation to maintain signal integrity.

Digital To Analog Converters Selection Notes

Select this component when a low-pin-count solution is required for applications needing 10-bit resolution and rail-to-rail output. It is suitable for designs where the system supply can serve as the reference voltage, eliminating the need for an external reference component. Consider the DAC101C085 if an independent external reference or additional I2C address options are necessary for the system architecture.

Digital To Analog Converters Part Context

This device belongs to the DAC101C08x family of micro-power digital-to-analog converters. It shares functional compatibility with the DAC101C085, which differs primarily by offering an external reference input and nine selectable I2C addresses via the DGK VSSOP-8 package. Pin-compatible alternatives within the series provide varying resolutions, including 8-bit and 12-bit options, allowing for design flexibility without changing the footprint.

Digital To Analog Converters Replacement Considerations

The DAC101C081CISDX/NOPB serves as a direct replacement alternative, offering identical functionality in a WSON-6 package. Designers must verify that the physical dimensions and thermal characteristics of the replacement package fit the existing board space constraints.

Digital To Analog Converters FAQ

How does the DAC101C081 handle the reference voltage?

The DAC101C081 uses the analog supply voltage (VA) as its reference. Consequently, VA must be decoupled and treated as a clean reference source, as the output accuracy depends directly on the stability of the supply voltage.

What is the maximum load capacitance the output can drive?

The output amplifier can drive a maximum load capacitance of 1500 pF to ground or to VA, provided the resistive load is infinite or 2 kΩ.

Does the device support high-speed I2C communication?

Yes, the I2C-compatible interface supports Standard mode (100 kHz), Fast mode (400 kHz), and High-Speed mode (up to 3.4 MHz).