The DACx1416 are a pin-compatible family of 16-channel, buffered, high-voltage output digital-to-analog converters (DACs) with 16‑bit, 14‑bit, and 12‑bit resolution. The DACx1416 include a 2.5-V internal reference. A user-selectable output configuration enables full-scale bipolar output voltages of ±20 V, ±10 V, ±5 V or ±2.5 V, and full-scale unipolar output voltages of 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 DACx1416 operate from five supply voltages: V_DD, V_AA, V_CC, V_SS and V_IO.

• V_DD and V_AA are the digital and analog supplies for the DACs, internal reference and other low voltage components and must be set at the same potential.
• V_CC and V_SS are the positive and analog supplies for the DAC output amplifiers.
• V_IO sets the logic levels for the digital inputs and outputs.

Communication with the DACx1416 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 DACx1416 serial interface.

The DACx1416 incorporate a power-on-reset circuit that connects the DAC outputs to ground at power up. The outputs remain in this state until the device registers are properly configured for operation.