DAC121C081_16 datasheet(3/41 Pages) TI1

Part #	DAC121C081

Description	12-Bit Micro Power Digital-to-Analog Converter

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Manufacturer	TI1 [Texas Instruments]

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3

DAC121C081, DAC121C085

www.ti.com

SNAS395E – DECEMBER 2007 – REVISED JANUARY 2016

Product Folder Links: DAC121C081 DAC121C085

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5 Description (continued)

The DAC121C081 and DAC121C085 use a 2-wire, I2C-compatible serial interface that operates in all three

speed modes, including high-speed mode (3.4 MHz). An external address selection pin allows up to three

DAC121C081 or nine DAC121C085 devices per 2-wire bus. Pin compatible alternatives to the DAC121C081 are

available that provide additional address options.

The DAC121C081 and DAC121C085 each have a 16-bit register that controls the mode of operation, the power-

down condition, and the output voltage. A power-on reset circuit ensures that the DAC output powers up to 0 V.

A power-down feature reduces power consumption to less than a microWatt. Their low power consumption and

small packages make these DACs an excellent choice for use in battery operated equipment. Each DAC

operates over the extended industrial temperature range of

−40°C to +125°C.

The DAC121C081 and DAC121C085 are each part of a family of pin compatible DACs that also provide 8 and

10 bit resolution. For 8-bit DACs see the DAC081C081 and DAC081C085. For 10-bit DACs see the

DAC101C081 and DAC101C085.

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