DAC1132_15 Datasheet, PDF (1/4 Pages) Analog Devices – HIGH PERGORMANCE DIGITAL TO ANALOG CONVERTER

-. ANALOG
t W DEVICES
HighPerformance
Digitalt-o-AnalogConverter
PRELIMINARY TECHNICAL DATA
FEATURES
12 Bit Resolution
. Input Register Included
Small Module Package
Programmable Output Ranges
0 to +70° C Monotonicity
Low 8ppmfC Gain TC
2J1.sSettling Time
OB GENERAL DESCRIPTION
The DACl132 is a 12 bit, high performance digital-to-analog
S _{converter packaged in a very compact 2" x 2" x 0.4" module.}
O ^{It comes complete with an input storage register and a fast}
settling output amplifier which can be jumper programmed to
t L produce either of five output voltage ranges. Performance
specifications include 2Jl.Ssettling time to 0.01 %, 8ppm/C
E _{gain temperatUre coefficient, :!:~LSB linearity error, and}
TE ^{monotonicity from 0 to +70°C.}
OUTPUT CHARACTERISTICS
The 12 binary-weighted current sources which form the basis
of the digital-to-analog conversion process are directly con-
trolled by the digital data stored in the input register. The
combined output of these sources is applied to the internal op
amp summing junction to produce a voltage output signal. By
connecting jumpers between the proper module pins, various
values of op amp feedback resistance and thus, output voltage
ranges can be selected.
The DACl132 combines the ADS 62 integrated circuit DIA
In order to produce bipolar outputs, the current input to the
with a TTL input register, an output amplifier, and a precision
reference source to form a complete converter package. The
laser trimmed ADS62 which consists of precision current
internal op amp is offset by ~ Full Scale. This offset current is
generated bv the precision internal reference source and is ap-
plied to the op amp summing junction by means of a jumper
switches, and a very stable thin film resistor network provides
connected betWeen appropriate module terminals.
the DACl132 with excellent performance over temperatUre
and makes possible its small module size.
DIGITAL INPUT CHARACTERISTICS
The TTLlDTL compatible storage register contained within
the DAC1132 accepts either Binary or Offset Binary coded
inputs. Digital data appearing at the converter's 12 input ter-
minals will be strobed into the register whenever a positive
going transition is applied to the STROBE input (pin 6).
With the STROBE input held at either logic "0" or logic "1",
the input data may be changed without affecting either the
contents of the register or the output of the converter. The
transfer characteristics of the DACl132 are such that a full
scale digital input (111111111111) results in a positive full
scale voltage output.
Note: this data sheet includes "Preliminary Technical Data" describing
a new product. Though highly unlikely, it may be necessary to alter the
t
specifications to reflect life data collected during the initial months of
the product's use.
Information furnished by Analog Devices is believed to ba accurate Route 1 Industrial Park; P.O. Box 280; Norwood, Mass. 02062
and reliable. However, no responsibilitY is assumed by Analog Devices
for its use; nor for any infringements of patents or other rights of third
panies 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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