DAC1009_15 Datasheet, PDF (1/4 Pages) Analog Devices – Low Cost Multipurpose Digitalt To Analog Converter

,. ANALOG
W DEVICES
LowCostMultipurpose
Digitalt-o-AnalogConverter
DAC1009
FEATURES
12 Bit Resolution
Positive True Logic Inputs
Fixed Reference or Multiplying Operation
TTL/DTL or CMOS Compatible
Current or Voltage Output
- ^{User Selected Output Ranges}
Small Size 2" x 2" x 0.4" (51 x 51 x 10mm)
OBSOLETE GENERAL DESCRIPTION
The DACI009 is a lowtost, multipurpose digital-to-analog
converter which can be readily adapted to a variety of appli-
cations. This versatile 12 bit device can be programmed for
fixed reference or multiplying operation and for current or
voltage output. It will interface with CMOS or DTL/TTL logic
systems and it features convenient positive-true logic inputs.
Performance specifications include :tl/zLSB linearity error,
DIGITAL INPUTS
The DACI009 uses the positive-true logic convention pre-
ferred by many system designers (i.e., 111...1 digital input
results in the maximum absolute value analog output). The
logic levels of:
+2.0V « Logic "1" « +15V
OV « Logic "0" « +0.8V
are compatible with both DTL/TTL and CMOS systems.
411secsettling time for a 10V output step, and a gain tempera-
When used with CMOS logic, the driving gate for each input
ture coefficient of 11ppm/ C.
bit must be capable of sinking at least ImA.
OUTPUT VERSATILITY
The DACI009 can be used in either the voltage output or
current output mode. When it is used as a voltage output de-
vice, anyone of the five following output ranges are available:
Unipolar
0 to -5V, 0 to -10V
Bipolar
:t2.5V, :t5V, :tl0V
External jumpers at the module pins determine the output
amplifier feedback resistance. Offset of exactly one-half full
scale for bipolar applications is provided by connecting a
jumper between an internal reference source and the summing
junction of the output amplifier.
As a current output device the DACI009 can be used to drive
an external op amp. Internal feedback resistors can also be
used with this external op amp to assure optimum temperature
tracking of components.
For unipolar outputs either Binary or BCD code may be
used; for bipolar outputs Offset Binary code is available.
MUL TlPL YING CAP ABILITY
The DACI009 can be readily configured as either a one or
two-quadrant multiplying DAC. When used in this manner
the one-quadrant analog input of 0 to -lmA is attenuated by
an amount corresponding to the one-quadrant (unipolar) or
two-quadrant (bipolar) digital input signal. By appropriate
choice of the input resistor value, any input voltage range may
be used. The following sections of this data sheet should be
consulted to determine whether the multiplying characteristics
of this device make it suitable for a given application.
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 which may result from its use. No license is granted by implica-
tion or otherwise under any patent or patent rights of Analog Devices.
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