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National Semiconductor Electronic Components Datasheet

DAC082S085 Datasheet

8-Bit Micro Power DUAL Digital-to-Analog Converter

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DAC082S085 pdf
January 2007
DAC082S085
8-Bit Micro Power DUAL Digital-to-Analog Converter with
Rail-to-Rail Output
General Description
The DAC082S085 is a full-featured, general purpose DUAL
8-bit voltage-output digital-to-analog converter (DAC) that
can operate from a single +2.7V to 5.5V supply and consumes
0.6 mW at 3V and 1.6 mW at 5V. The DAC082S085 is pack-
aged in 10-lead LLP and MSOP packages. The 10-lead LLP
package makes the DAC082S085 the smallest DUAL DAC in
its class. The on-chip output amplifier allows rail-to-rail output
swing and the three wire serial interface operates at clock
rates up to 40 MHz over the entire supply voltage range.
Competitive devices are limited to 25 MHz clock rates at sup-
ply voltages in the 2.7V to 3.6V range. The serial interface is
compatible with standard SPI, QSPI, MICROWIRE and
DSP interfaces.
The reference for the DAC082S085 serves both channels and
can vary in voltage between 1V and VA, providing the widest
possible output dynamic range. The DAC082S085 has a 16-
bit input shift register that controls the outputs to be updated,
the mode of operation, the powerdown condition, and the bi-
nary input data. Both outputs can be updated simultaneously
or individually depending on the setting of the two mode of
operation bits.
A power-on reset circuit ensures that the DAC output powers
up to zero volts and remains there until there is a valid write
to the device. A power-down feature reduces power con-
sumption to less than a microWatt with three different termi-
nation options.
The low power consumption and small packages of the
DAC082S085 make it an excellent choice for use in battery
operated equipment.
The DAC082S085 is one of a family of pin compatible DACs,
including the 10-bit DAC102S085 and the 12-bit
DAC124S085. The DAC082S085 operates over the extended
industrial temperature range of −40°C to +105°C.
Features
Guaranteed Monotonicity
Low Power Operation
Rail-to-Rail Voltage Output
Power-on Reset to 0V
Simultaneous Output Updating
Wide power supply range (+2.7V to +5.5V)
Industry's Smallest Package
Power Down Modes
Key Specifications
Resolution
INL
DNL
Settling Time
Zero Code Error
Full-Scale Error
Supply Power
Normal
Power Down
8 bits
±0.5 LSB (max)
+0.18 / −0.13 LSB (max)
4.5 µs (max)
+15 mV (max)
−0.75 %FS (max)
0.6 mW (3V) / 1.6 mW (5V) typ
0.3 µW (3V) / 0.8 µW (5V) typ
Applications
Battery-Powered Instruments
Digital Gain and Offset Adjustment
Programmable Voltage & Current Sources
Programmable Attenuators
Pin Configuration
20195601
SPIis a trademark of Motorola, Inc.
© 2007 National Semiconductor Corporation
201956
20195602
www.national.com


National Semiconductor Electronic Components Datasheet

DAC082S085 Datasheet

8-Bit Micro Power DUAL Digital-to-Analog Converter

No Preview Available !

DAC082S085 pdf
Ordering Information
Order Numbers
DAC082S085CISD
DAC082S085CISDX
DAC082S085CIMM
DAC082S085CIMMX
DAC082S085EVAL
Temperature Range
−40°C TA +105°C
−40°C TA +105°C
−40°C TA +105°C
−40°C TA +105°C
Block Diagram
Package
LLP
LLP Tape-and-Reel
MSOP
MSOP Tape-and-Reel
Evaluation Board (MSOP)
Top Mark
X77C
X77C
X76C
X76C
20195603
www.national.com
2


Part Number DAC082S085
Description 8-Bit Micro Power DUAL Digital-to-Analog Converter
Maker National Semiconductor
Total Page 20 Pages
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