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.
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 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.
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
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.
Available in Die Form
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.
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.
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.
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
MSB
B1
LSB
B8
V+
13
V
B2
B3
B4
B5
B6
10
B7
11
LC
1
5
6
7
8
9
12
DAC08
I
OUT
BIAS
NETWORK
CURRENT
SWITCHES
4
2
14
15
I
OUT
V
(+)
(–)
REF
V
REF
REFERENCE
AMPLIFIER
16
COMP
3
V–
REV. B
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