DAC8143 1-CH R-2R 12-bit 16-Pin SOIC W Tube

The DAC8143 is a 12-bit serial-input daisy-chain CMOS D/A converter that features serial data input and buffered serial data output. It was designed for multiple serial DAC systems, where serially daisy-chaining one DAC after another is greatly simplified. The DAC8143 also minimizes address decoding lines enabling simpler logic interfacing. It allows a three-wire interface for any number of DACs: one data line, one CLK line, and one load line. Serial data in the input register (MSB first) is sequentially clocked out to the SRO pin as the new data word (MSB first) is simultaneously clocked in from the SRI pin. The strobe inputs are used to clock in/out data on the rising or falling (user-selected) strobe edges (STB1, STB2, STB3, STB4). When the shift register’s data has been updated, the new data word is transferred to the DAC register with the use of LD1 and LD2 inputs. Separate LOAD control inputs allow simultaneous output updating of multiple DACs. An asynchronous CLEAR input resets the DAC register without altering data in the input register. Improved linearity and gain error performance permits reduced circuit parts count through the elimination of trimming compo-

nets.Fast interface timing reduces timing design considerations while minimizing microprocessor wait for states. The DAC8143 is available in plastic packages that are compact-

able with autoinfection equipment. Plastic packaged devices come in the extended industrial temperature range of –40°C to +85°C.

• Fast, Flexible, Microprocessor Interfacing in Serially Controlled Systems.
• Buffered Digital Output Pin for Daisy-Chaining Multiple DACs.
• Minimizes Address-Decoding in Multiple DAC.
• Improved Resistance to ESD –40°C to +85°C for the Extended Industrial Temperature
  Range.

• Multiple-Channel Data Acquisition Systems.
• Process Control and Industrial Automation Test Equipment.
• Remote Microprocessor-Controlled Systems.