AD5647R Datasheet

• Low power, smallest pin-compatible, dual nanoDACs
• AD5647R
  14-bit
  On-chip 1.25 V/2.5 V, 5 ppm/°C reference
• 3 mm × 3 mm LFCSP and 10-lead MSOP
• 2.7 V to 5.5 V power supply
• Guaranteed monotonic by design
• Power-on reset to zero scale
• Per channel power-down
• Hardware LDAC and CLR functions
• I²C-compatible serial interface supports standard (100 kHz), fast (400 kHz), and high speed (3.4 MHz) modes

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

The AD5647R members of the nanoDAC^® family are low power, dual, 14-bit buffered voltage-out DACs with/without on-chip reference. All devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and have an I²C-compatible serial interface.

The AD5647R have an on-chip reference. The AD5647RBCPZ have a 1.25 V, 5 ppm/°C reference, giving a full-scale output range of 2.5 V. The on-chip reference is off at power-up, allowing the use of an external reference. The internal reference is enabled via a software write.

The AD5647R 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 device contains a per-channel 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 device in normal operation makes it ideally suited to portable battery-operated equipment. The on-chip precision output amplifier enables rail-to-rail output swing.

The AD5647R use a 2-wire I²C-compatible serial interface that operates in standard (100 kHz), fast (400 kHz), and high speed (3.4 MHz) modes.