Low Cost/High Accuracy
18-Bit D/A/ Converter
DAC1146
FEATURES
Integral Nonlinearity: 鹵0.00076% FSR max
Differential Nonlinearity: 鹵0.00076% FSR max
Low Differential Nonlinearity T.C.: 鹵1 ppm/擄C max
Wide Power Supply Operation: 鹵11.5V to 鹵16V
Fast Settling: 6碌S to 鹵0.00076% FSR
Small Size 2" x 2" x 0.4"
APPLICATIONS
Automatic Test Equipment
Digital Audio
Sonar
Robotics
Nuclear Instrumentation
GENERAL DESCRIPTION
The DAC1146 is a low cost, 18-bit resolution (1 part in 262,144),
digital-to-analog converter that provides high accuracy, high stability
and is contained in a 2" x 2" x 0.4" module.
Integral and differential nonlinearity are both guaranteed at
鹵0.00076%
FSR maximum. Additional guaranteed performance
features include: differential nonlinearity T.C.
鹵1ppm/擄C
maximum,
offset T.C.
鹵30碌V/擄C
maximum, gain T.C.
鹵12ppm/擄C
maximum,
bipolar offset T.C.
鹵7ppm/擄C
maximum.
The DAC1146 makes use of CMOS integrated circuits, thin-film
resistor technology and proprietary CMOS current-steering switches
to obtain high resolution, high reliability and small size. The
calculated MTBF for the DAC1146 is 275,445 hours, per Mil
Handbook 217C.
The DAC1146 can operate with power supplies ranging from
鹵11.5V
to
鹵16.0V.
An internal precision reference is provided, an external
reference can be used. The external reference voltage input range is -
12V to +12V. The analog output ranges include: +5V, +10V,
鹵5V,
鹵10V,
- 2mA and 鹵1mA, and are selectable via pin programming (see
Figure 1). Digital input coding for unipolar operation is true binary,
bipolar input coding is offset binary or 2's complement.
Figure 1. DAC1146 Block Diagram
Information furnished by Intronics is believed to be accurate and reliable. However, no
responsibility is assumed by Intronics for its use; nor for any infringements of patents or
other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of Intronics.
1400 Providence Highway, Building #2
Norwood, MA 02062
Phone (781) 551-5500
FAX (781) 551-5555
www.intronicspower.com
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