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DAC081C081, DAC081C085
SNAS449F –FEBRUARY 2008–REVISED MAY 2017
DAC081C08x 8-Bit Micro Power Digital-to-Analog Converter With An I2C-Compatible
Interface
1 Features
3 Description
The DAC081C08x device is an 8-bit, single-channel,
voltage-output digital-to-analog converter (DAC) that
operates from a 2.7-V to 5.5-V supply. The output
amplifier allows rail-to-rail output swing and has an
4.5-µsec settling time. The DAC081C081 uses the
supply voltage as the reference to provide the widest
dynamic output range and typically consumes 132 µA
while operating at 5 V. It is available in 6-lead SOT
and WSON packages and provides three address
options (pin selectable).
As an alternative, the DAC081C085 provides nine I2C
addressing options and uses an external reference. It
has the same performance and settling time as the
DAC081C081. It is available in an 8-lead VSSOP.
1
•
Ensured Monotonicity to 8-bits
•
•
•
Low Power Operation: 156 µA Maximum at 3.3 V
Extended Power Supply Range (2.7 V to 5.5 V)
I2C-Compatible 2-Wire Interface Which Supports
Standard (100-kHz), Fast (400-kHz), and High-
Speed (3.4-MHz) Modes
•
•
•
•
•
•
•
•
•
Rail-to-Rail Voltage Output
Very Small Package
Resolution 8 Bits
INL ±0.6 LSB (Maximum)
DNL ±0.1 LSB (Maximum)
Settling Time 4.5 μs (Maximum)
Zero Code Error +10 mV (Maximum)
Full-Scale Error −0.7 %FS (Maximum)
Supply Power
The DAC081C081 and DAC081C085 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 DAC081C081 or nine DAC081C085 devices
per 2-wire bus. Pin-compatible alternatives to the
DAC081C081 are available that provide additional
address options.
–
Normal
–
–
380 μW (3 V)
730 μW (5 V) Typical
–
Power Down
Table 1. Device Information(1)
–
–
0.5 μW (3 V)
0.9 μW (5 V) Typical
PART NUMBER
PACKAGE
WSON (6)
BODY SIZE (NOM)
2.20 mm × 2.50 mm
1.60 mm × 2.90 mm
3.00 mm × 3.00 mm
DAC081C081
SOT (6)
2 Applications
DAC081C085
VSSOP (8)
•
•
•
•
•
Industrial Process Control
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Portable Instruments
Digital Gain and Offset Adjustments
Programmable Voltage and Current Sources
Test Equipment
Figure 1. Block Diagram
V *
A
V
*
REF
GND
DAC081C081 / DAC081C085
POWER-ON
RESET
REF
DAC
REGISTER
8 BIT DAC
V
OUT
BUFFER
8
8
2.5k
100k
POWER-DOWN
CONTROL
LOGIC
2
I
C
INTERFACE
* NOTE: ADR1 and V
are for the DAC081C085 only. The DAC081C085 uses an external
), whereas, the DAC081C081 uses the supply (V ) as the reference.
REF
reference (V
REF
A
ADR1* ADR0
SCL
SDA
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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