National Semiconductor DAC101C081/C085 10-Bit Micro Power Digital-to-Analog Converter Data Sheet Manual

/ D -B it M ic ro r D ig ita l-to -A lo rte

March 13, 2008

DAC101C081/ DAC101C085 10-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface General Description Features The DAC101C081 is a 10-bit, single channel, voltage-output Guaranteed Monotonicity to 10-bits digital-to-analog converter (DAC) that operates from a +2.7V

Low Power Operation: 156 µA max @ 3.3V

to 5.5V supply. The output amplifier allows rail-to-rail output

Extended power supply range (+2.7V to +5.5V)

swing and has an 6µsec settling time. The DAC101C081 uses

I2C-Compatible 2-wire Interface which supports standard

the supply voltage as the reference to provide the widest dy-

(100k Hz), fast (400k Hz), and high speed (3.4MHz) modes

namic output range and typically consumes 132µA while

Rail-to-Rail Voltage Output

operating at 5.0V. It is available in 6-lead TSOT and LLP packages and provides three address options (pin se- Very Small Package lectable). As an alternative, the DAC101C085 provides nine I2C ad- Key Specifications dressing options and uses an external reference. It has the

Resolution 10 bits

same performance and settling time as the DAC101C081. It

INL ±2 LSB (max)

is available in an 8-lead MSOP.

DNL +0.3 / -0.2 LSB (max)

The DAC101C081 and DAC101C085 use a 2-wire, I2C-com-

Settling Time 6 µs (max)

patible serial interface that operates in all three speed modes,

Zero Code Error +10 m V (max)

including high speed mode (3.4MHz). An external address

Full-Scale Error −0.7 %FS (max)

selection pin allows up to three DAC101C081 or nine

DAC101C085 devices per 2-wire bus. Pin compatible alter- Supply Power

natives to the DAC101C081 are available that provide addi- Normal 380 µW (3V) / 730 µW (5V) typ tional address options. Power Down 0.5 µW (3V) / 0.9 µW (5V) typ The DAC101C081 and DAC101C085 each have a 16-bit reg- ister that controls the mode of operation, the power-down Applications condition, and the output voltage. A power-on reset circuit

Industrial Process Control

ensures that the DAC output powers up to zero volts. A power-

down feature reduces power consumption to less than a Portable Instruments

micro Watt. Their low power consumption and small packages Digital Gain and Offset Adjustment make these DACs an excellent choice for use in battery op-

Programmable Voltage & Current Sources

erated equipment. Each DAC operates over the extended

Test Equipment

industrial temperature range of −40°C to +125°C. The DAC101C081 and DAC101C085 are each part of a fam-

Pin-Compatible Alternatives

ily of pin compatible DACs that also provide 12 and 8 bit

All devices are fully pin and function compatible.

resolution. For 12-bit DACs see the DAC121C081 and

Resolution TSOT-6 and LLP-6 MSOP-8 Package w/

DAC121C085. For 8-bit DACs see the DAC081C081 and

DAC081C085. Packages External Reference

12-bit DAC121C081 DAC121C085 10-bit DAC101C081 DAC101C085 8-bit DAC081C081 DAC081C085

Connection Diagrams

I2C® is a registered trademark of Phillips Corporation.

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