DAC101C081CIMK Datasheet, PDF (1/24 Pages) National Semiconductor (TI) – 10-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface

March 13, 2008
DAC101C081/ DAC101C085
10-Bit Micro Power Digital-to-Analog Converter with an
I²C-Compatible Interface
General Description
The DAC101C081 is a 10-bit, single channel, voltage-output
digital-to-analog converter (DAC) that operates from a +2.7V
to 5.5V supply. The output amplifier allows rail-to-rail output
swing and has an 6µsec settling time. The DAC101C081 uses
the supply voltage as the reference to provide the widest dy-
namic output range and typically consumes 132µA while
operating at 5.0V. It is available in 6-lead TSOT and LLP
packages and provides three address options (pin se-
lectable).
As an alternative, the DAC101C085 provides nine I²C ad-
dressing options and uses an external reference. It has the
same performance and settling time as the DAC101C081. It
is available in an 8-lead MSOP.
The DAC101C081 and DAC101C085 use a 2-wire, I²C-com-
patible serial interface that operates in all three speed modes,
including high speed mode (3.4MHz). An external address
selection pin allows up to three DAC101C081 or nine
DAC101C085 devices per 2-wire bus. Pin compatible alter-
natives to the DAC101C081 are available that provide addi-
tional address options.
The DAC101C081 and DAC101C085 each have a 16-bit reg-
ister 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 zero volts. 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 op-
erated equipment. Each DAC operates over the extended
industrial temperature range of −40°C to +125°C.
The DAC101C081 and DAC101C085 are each part of a fam-
ily of pin compatible DACs that also provide 12 and 8 bit
resolution. For 12-bit DACs see the DAC121C081 and
DAC121C085. For 8-bit DACs see the DAC081C081 and
DAC081C085.
Features
■ ^{Guaranteed Monotonicity to 10-bits}
■ ^{Low Power Operation: 156 µA max @ 3.3V}
■ ^{Extended power supply range (+2.7V to +5.5V)}
■ ^{I2C-Compatible 2-wire Interface which supports standard}
(100kHz), fast (400kHz), and high speed (3.4MHz) modes
■ ^{Rail-to-Rail Voltage Output}
■ ^{Very Small Package}
Key Specifications
■ ^Resolution
■ ^INL
■ ^DNL
■ ^{Settling Time}
■ ^{Zero Code Error}
■ ^{Full-Scale Error}
■ ^{Supply Power}
— Normal
— Power Down
10 bits
±2 LSB (max)
+0.3 / -0.2 LSB (max)
6 µs (max)
+10 mV (max)
−0.7 %FS (max)
380 µW (3V) / 730 µW (5V) typ
0.5 µW (3V) / 0.9 µW (5V) typ
Applications
■ ^{Industrial Process Control}
■ ^{Portable Instruments}
■ ^{Digital Gain and Offset Adjustment}
■ ^{Programmable Voltage & Current Sources}
■ ^{Test Equipment}
Pin-Compatible Alternatives
All devices are fully pin and function compatible.
Resolution TSOT-6 and LLP-6 MSOP-8 Package w/
Packages
External Reference
12-bit
DAC121C081
DAC121C085
10-bit
DAC101C081
DAC101C085
8-bit
DAC081C081
DAC081C085
Connection Diagrams
30052201
I2C® is a registered trademark of Phillips Corporation.
© 2008 National Semiconductor Corporation
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