Linear Technology introduced the LTC1591, a 14-bit parallel input, multiplying current output digital-to-analog (DAC) that guarantees 14-bit accuracy over temperature and includes the precision resistors required for bipolar output applications. The LTC1591achieves true 14-bit linearity over the industrial temperature range and delivers the low glitch impulse and the fast settling time necessary in precision applications. This combination of performance and 14-bit accuracy make the LTC1591 suitable for digital waveform generation as well as automatic test equipment, process control and industrial automation.

On-chip precision resistors simplify the connection to external op amps for 4-quadrant multiplying applications and creating up to a ý10V analog output. The resistor connections allow 0V to 10V, 0V to ý10V or ý10V output ranges, enabling precision applications to achieve true 14-bit accuracy in a rugged, industrial environment. An asynchronous clear pin resets the LTC1591 to zero scale; the LTC1591-1 is reset to midscale allowing bipolar applications to reset to zero volts.

My criticism over this splendid DAC would be price. But it will sell well, finding design wins in areas where parallel 14-bit solutions are needed with the smaller package size. Its performance is high with both DNL and INL at 1 LSB maximum and a glitch impulse of less than 2 nV-s. I also like the provision of the quadrant multiplying resistors which will allow for much faster -- and more accurate -- design implementations.