ZHCSIG8A July 2018 – November 2018 DAC61408 , DAC71408 , DAC81408
PRODUCTION DATA.
The DACx1408 is a pin-compatible family of 8-channel, buffered, high-voltage output digital-to-analog converters (DACs) with 16-, 14- and 12-bit resolution. The DACx1408 includes a 2.5-V internal reference. A user selectable output configuration enables full-scale bipolar output voltages: ±20 V, ±10 V, ±5 V or ±2.5 V and full-scale unipolar output voltages: 40 V, 20 V, 10 V or 5 V. The full-scale output range for each DAC channel is independently programmable. In addition, each pair of DAC channels can be configured to provide a differential output. Three dedicated A-B toggle pins enable dither signal generation with up to three possible frequencies.
The DACx1408 operates from five supply voltages: VDD, VAA, VCC, VSS and VIO. VDD and VAA are the digital and analog supplies for the DACs, internal reference and other low voltage components and must be set at the same potential. VCC and VSS are the positive and analog supplies for the DAC output amplifiers. VIO sets the logic levels for the digital inputs and outputs.
Communication to the DACx1408 is performed through a 4-wire serial interface that supports stand-alone and daisy-chain operation. The optional frame-error checking provides added robustness to the DACx1408 serial interface.
The DACx1408 incorporates a power-on-reset circuit that connects the DAC outputs to ground at power-up. The outputs remain at this state until the device registers are properly configured for operation.