a Octal 13-Bit, Parallel Input,
Voltage-Output DAC
AD7839 FEATURES
Eight 13-Bit DACs in One Package
Voltage Outputs
Offset Adjust for Each DAC Pair
Reference Range of ⴞ5 V
Maximum Output Voltage Range of ⴞ10 V
Clear Function to User-Defined Voltage
44-Lead MQFP Package GENERAL DESCRIPTION The AD7839 contains eight 13-bit DACs on one monolithic
chip. It has output voltages with a full-scale range of ± 10 V
from reference voltages of ± 5 V.
The AD7839 accepts 13-bit parallel loaded data from the external bus into one of the input registers under the control of the
WR, CS and DAC channel address pins, A0–A2.
The DAC outputs are updated on reception of new data into
the DAC registers. All the outputs may be updated simultaneously by taking the LDAC input low. APPLICATIONS
Automatic Test Equipment
Process Control
General Purpose Instrumentation Each DAC output is buffered with a gain-of-two amplifier into
which an external DAC offset voltage can be inserted via the
DUTGNDx pins.
The AD7839 is available in a 44-lead MQFP package.
FUNCTIONAL BLOCK DIAGRAM VCC VSS VDD VREF(+) VREF(–) AB AB DUTGND …
