Hot-selling and scarce AD664TD-BIP/883B Monolithic,12-Bit Quad DAC 28-CDIP spot stock

Product Descriptions

The AD664 is four complete 12-bit,voltage-output digital-toanalog converters (DACs) on one monolithic IC chip. EachDAC has a double buffered input latch structure and a datareadback function . All DAC read and write operations occurthrough a single microprocessor-compatible input/output (I/O)port .

The I/O port accommodates 4-bit, 8-bit, or 12-bit parallel wordsallowing simple interfacing with a wide variety ofmicroprocessors. A reset to zero control pin is provided to allowa user to simultaneously reset all DAC outputs to zero,regardlessof the contents of the input latch. Any one or all of the DACsmay be placed in a transparent mode allowing immediateresponse by the outputs to the input data .

The analog portion of the AD664 consists of four DAC cells,four output amplifiers, a control amplifier, and switches . EachDAC cell is an inverting R-2R type . The output current fromeach DAC is switched to the on-board application resistorsand output amplifier. The output range of each DAC cell isprogrammed through the digital input/output port and may beset to unipolar (UNI) or bipolar (BIP) range, with a gain of oneor two times the reference voltage . All DACs are operated froma single external reference .

The functional completeness of the AD664 results from thecombination of the Analog Devices, Inc .,BiMOS II process,lasertrimmed thin film resistors, and double level metal interconnects .

Product 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

Product Applications

Automatic test equipment

Robotics

Process control

Disk drives

Instrumentation

Avionics

Product Specifications

Product Photos

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