Analog Devices AD5678 4x12-bit and 4x16-bit Octal DACs are low power, octal, buffered voltage-output digital-to-analog converters with four 12-bit DACs and four 16-bit DACs in a single package. ADI AD5678 devices operate from a single 2.7V to 5.5V supply and are guaranteed monotonic by design. AD5678 has an on-chip reference with an internal gain of 2. AD5678-1 has a 1.25V 5ppm/°C reference, giving a full-scale output of 2.5V, while AD5678-2 has a 2.5V 5ppm/°C reference, giving a full-scale output of 5V. The on-board reference is off at power-up, allowing the use of an external reference. The internal reference is enabled via a software write. The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0V and remains powered up at this level until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 400nA at 5V and provides software-selectable output loads while in the power-down mode for any or all DAC channels.
Low power octal DAC
Four 16-bit DACs
Four 12-bit DACs
On-chip 1.25V/2.5V, 5ppm/°C reference
Power down to 400nA @ 5V, 200nA @ 3V
2.7V to 5.5V power supply
Guaranteed monotonic by design
Power-on reset to zero scale
3 power-down functions
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage current sources
Analog Devices Inc. EVAL-AD5678 Evaluation Board
Helps designers quickly prototype new AD5678 circuits.