The AD5623R/AD5643R/AD5663R, members of the nanoDAC® family, are low power, dual 12-, 14-, and 16-bit buffered voltage-out digital-to-analog converters (DAC) that operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design.
The AD5623R/AD5643R/AD5663R have an on-chip reference. The AD5623R-3/AD5643R-3/AD5663R-3 have a 1.25 V, 5 ppm/°C reference, giving a full-scale output of 2.5 V; and the AD5623R-5/ AD5643R-5/AD5663R-5 have a 2.5 V, 5 ppm/°C reference, giving a full-scale output of 5 V. The on-chip reference is off at power-up, allowing the use of an external reference; and all devices can be operated from a single 2.7 V to 5.5 V supply. The internal reference is turned on by writing to the DAC.
The parts incorporate a power-on reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 480 nA at 5 V and provides software-selectable output loads while in power-down mode.
The low power consumption of this part in normal operation makes it ideally suited to portable, battery-operated equipment.
The AD5623R/AD5643R/AD5663R use a versatile, 3-wire serial interface that operates at clock rates up to 50 MHz, and they are compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The on-chip precision output amplifier enables rail-to-rail output swing to be achieved.
- Dual 12-, 14-, and 16-bit DAC.
- On-chip 1.25 V/2.5 V, 5 ppm/°C reference.
- Available in 10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP.
- Low power; typically consumes 0.6 mW at 3 V and 1.25 mW at 5 V.
- 4.5 μs maximum settling time for the AD5623R.
- Process control
- Data acquisition systems
- Portable battery-powered instruments
- Digital gain and offset adjustment
- Programmable voltage and current sources
- Programmable attenuators
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Full data on the AD5663R/AD5667R can be found in the appropriate data sheets available from Analog Devices and should be consulted in conjunction with the user guide UG-991 when using the evaluation board.
The evaluation board interfaces to the USB port of a PC via the SDP board.
This evaluation board requires the EVAL-SDP-CB1Z board (SDP-B controller board).
Solutions Bulletins & Brochures
Digital to Analog Converters ICs Solutions Bulletin
Difference Amplifier Forms Heart of Precision Current Source
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