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AD664

Analog Devices
Part Number AD664
Manufacturer Analog Devices
Description Monolithic 12-Bit Quad DAC
Published Jan 11, 2017
Detailed Description Data Sheet FEATURES Four complete voltage-output DACs Data register readback feature Reset to zero override Multiplying ...
Datasheet PDF File AD664 PDF File

AD664
AD664

Overview
Data Sheet FEATURES Four complete voltage-output DACs Data register readback feature Reset to zero override Multiplying operation Double buffered latches Surface-mount (LCC, PLCC, and JLCC) and PDIP and SBDIP packages MIL-STD-883 compliant versions available APPLICATIONS Automatic test equipment Robotics Process control Disk drives Instrumentation Avionics GENERAL DESCRIPTION The AD664 is four complete 12-bit, voltage-output digital-toanalog converters (DACs) on one monolithic IC chip.
Each DAC has a double buffered input latch structure and a data readback function.
All DAC read and write operations occur through a single microprocessor-compatible input/output (I/O) port.
The I/O port accommodates 4-bit, 8-bit, or 12-bit parallel words allowing simple interfacing with a wide variety of microprocessors.
A reset to zero control pin is provided to allow a user to simultaneously reset all DAC outputs to zero, regardless of the contents of the input latch.
Any one or all of the DACs may be placed in a transparent mode allowing immediate response by the outputs to the input data.
Monolithic, 12-Bit Quad DAC AD664 The analog portion of the AD664 consists of four DAC cells, four output amplifiers, a control amplifier, and switches.
Each DAC cell is an inverting R-2R type.
The output current from each DAC is switched to the on-board application resistors and output amplifier.
The output range of each DAC cell is programmed through the digital input/output port and may be set to unipolar (UNI) or bipolar (BIP) range, with a gain of one or two times the reference voltage.
All DACs are operated from a single external reference.
The functional completeness of the AD664 results from the combination of the Analog Devices, Inc.
, BiMOS II process, laser trimmed thin film resistors, and double level metal interconnects.
PRODUCT HIGHLIGHTS 1.
The AD664 provides four voltage-output DACs on one chip offering the highest density 12-bit DAC function available.
2.
The output range of eac...


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