a
8-Bit, High-Speed, Multiplying D/A Converter
(Universal Digital Logic Interface)
DAC08
full-scale currents eliminates the need for full-scale trimming in
most applications. Direct interface to all popular logic families
with full noise immunity is provided by the high swing, adjust-
able threshold logic input.
High voltage compliance complementary current outputs are
provided, increasing versatility and enabling differential opera-
tion to effectively double the peak-to-peak output swing. In
many applications, the outputs can be directly converted to
voltage without the need for an external op amp.
All DAC08 series models guarantee full 8-bit monotonicity,
and nonlinearities as tight as
±
0.1% over the entire operating
temperature range are available. Device performance is essen-
tially unchanged over the
±
4.5 V to
±
18 V power supply range,
with 33 mW power consumption attainable at
±
5 V supplies.
The compact size and low power consumption make the DAC08
attractive for portable and military/aerospace applications;
devices processed to MIL-STD-883, Level B are available.
DAC08 applications include 8-bit, 1
µs
A/D converters, servo
motor and pen drivers, waveform generators, audio encoders
and attenuators, analog meter drivers, programmable power
supplies, CRT display drivers, high-speed modems and other
applications where low cost, high speed and complete input/
output versatility are required.
FEATURES
Fast Settling Output Current: 85 ns
Full-Scale Current Prematched to 1 LSB
Direct Interface to TTL, CMOS, ECL, HTL, PMOS
Nonlinearity to 0.1% Maximum over
Temperature Range
High Output Impedance and Compliance:
–10 V to +18 V
Complementary Current Outputs
Wide Range Multiplying Capability: 1 MHz Bandwidth
Low FS Current Drift: 10 ppm/ C
Wide Power Supply Range: 4.5 V to 18 V
Low Power Consumption: 33 mW @ 5 V
Low Cost
Available in Die Form
GENERAL DESCRIPTION
The DAC08 series of 8-bit monolithic digital-to-analog convert-
ers provide very high-speed performance coupled with low cost
and outstanding applications flexibility.
Advanced circuit design achieves 85 ns settling times with very
low “glitch” energy and at low power consumption. Monotonic
multiplying performance is attained over a wide 20-to-1 reference
current range. Matching to within 1 LSB between reference and
FUNCTIONAL BLOCK DIAGRAM
V+
13
V
LC
1
MSB
B1
5
B2
6
B3
7
B4
8
B5
9
B6
10
B7
11
LSB
B8
12
DAC08
BIAS
NETWORK
CURRENT
SWITCHES
4
2
I
OUT
V
REF
(+)
14
I
OUT
V
REF
(–)
15
REFERENCE
AMPLIFIER
16
COMP
V–
3
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
© Analog Devices, Inc., 2002
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