AD5643RBRMZ-3REEL7

The AD5623R/AD5643R/AD5663R 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.

Applications

• Process control
• Data acquisition systems
• Portable battery-powered instruments
• Digital gain and offset adjustment
• Programmable voltage and current sources
• Programmable attenuators

Key features

• Low power, smallest pin-compatible, dual nanoDAC AD5663R: 16 bits AD5643R: 14 bits AD5623R: 12 bits
• User-selectable external or internal reference External reference default On-chip 1.25 V/2.5 V, 5 ppm/°C reference
• 10-lead MSOP and 3 mm×3 mm LFCSP
• 2.7 V to 5.5 V power supply
• Guaranteed monotonic by design
• Power-on reset to zero scale
• Per channel power-down
• Serial interface up to 50 MHz
• Hardware LDAC and CLR functions