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National Semiconductor Electronic Components Datasheet

DAC108S085 Datasheet

10-Bit Micro Power OCTAL Digital-to-Analog Converter

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DAC108S085 pdf
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October 2007
DAC108S085
10-Bit Micro Power OCTAL Digital-to-Analog Converter
with Rail-to-Rail Outputs
General Description
The DAC108S085 is a full-featured, general purpose OCTAL
10-bit voltage-output digital-to-analog converter (DAC) that
can operate from a single +2.7V to +5.5V supply and con-
sumes 1.95 mW at 3V and 4.85 mW at 5V. The DAC108S085
is packaged in a 16-lead LLP package and a 16-lead TSSOP
package. The LLP package makes the DAC108S085 the
smallest OCTAL DAC in its class. The on-chip output ampli-
fiers allow 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 supply voltages in the 2.7V to 3.6V range.
The serial interface is compatible with standard SPI, QSPI,
MICROWIRE and DSP interfaces. The DAC108S085 also of-
fers daisy chain operation where an unlimited number of
DAC108S085s can be updated simultaneously using a single
serial interface.
There are two references for the DAC108S085. One refer-
ence input serves channels A through D while the other
reference serves channels E through H. Each reference can
be set independently between 0.5V and VA, providing the
widest possible output dynamic range. The DAC108S085 has
a 16-bit input shift register that controls the mode of operation,
the power-down condition, and the DAC channels' register/
output value. All eight DAC outputs can be updated simulta-
neously or individually.
A power-on reset circuit ensures that the DAC outputs power
up to zero volts and remain there until there is a valid write to
the device. The power-down feature of the DAC108S085 al-
lows each DAC to be independently powered with three dif-
ferent termination options. With all the DAC channels
powered down, power consumption reduces to less than 0.3
µW at 3V and less than 1 µW at 5V. The low power consump-
tion and small packages of the DAC108S085 make it an
excellent choice for use in battery operated equipment.
The DAC108S085 is one of a family of pin compatible DACs,
including the 8-bit DAC088S085 and the 12-bit DAC128S085.
All three parts are offered with the same pinout, allowing sys-
tem designers to select a resolution appropriate for their
application without redesigning their printed circuit board. The
DAC108S085 operates over the extended industrial temper-
ature range of −40°C to +125°C.
Features
Guaranteed Monotonicity
Low Power Operation
Rail-to-Rail Voltage Output
Daisy Chain Capability
Power-on Reset to 0V
Simultaneous Output Updating
Individual Channel Power Down Capability
Wide power supply range (+2.7V to +5.5V)
Dual Reference Voltages with range of 0.5V to VA
Operating Temperature Range of −40°C to +125°C
Industry's Smallest Package
Key Specifications
Resolution
INL
DNL
Settling Time
Zero Code Error
Full-Scale Error
Supply Power
Normal
Power Down
10 bits
±2 LSB (max)
+0.35 / −0.2 LSB (max)
6 µs (max)
+15 mV (max)
−0.75 %FSR (max)
1.95 mW (3V) / 4.85 mW (5V) typ
0.3 µW (3V) / 1 µW (5V) typ
Applications
Battery-Powered Instruments
Digital Gain and Offset Adjustment
Programmable Voltage & Current Sources
Programmable Attenuators
Voltage Reference for ADCs
Sensor Supply Voltage
Range Detectors
Ordering Information
Order Numbers
DAC108S085CISQ
DAC108S085CISQX
DAC108S085CIMT
DAC108S085CIMTX
DAC108S085EB
SPIis a trademark of Motorola, Inc.
Temperature Range
−40°C TA +125°C
−40°C TA +125°C
−40°C TA +125°C
−40°C TA +125°C
© 2007 National Semiconductor Corporation 300312
Package
16-Lead LLP
LLP Tape-and-Reel
16-Lead TSSOP
TSSOP Tape-and-Reel
Evaluation Board - BOTH
Top Mark
X80C
X80C
www.national.com


National Semiconductor Electronic Components Datasheet

DAC108S085 Datasheet

10-Bit Micro Power OCTAL Digital-to-Analog Converter

No Preview Available !

DAC108S085 pdf
www.DataBShleoect4kU.Dcoimagram
www.national.com
2
30031203


Part Number DAC108S085
Description 10-Bit Micro Power OCTAL Digital-to-Analog Converter
Maker National Semiconductor
Total Page 24 Pages
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