AD5620 Datasheet

• 12-Bit DAC; 12-Bit Accuracy Guaranteed
• On-chip, 1.25 V/2.5 V, 5 ppm/°C reference
• Tiny 8-lead SOT-23/MSOP packages
• Power-down to 480 nA @ 5 V, 200 nA @ 3 V
• 3 V/5 V single power supply
• Guaranteed 16-bit monotonic by design
• Power-on reset to zero/midscale
• 3 power-down functions
• Serial interface with Schmitt-triggered inputs
• Rail-to-rail operation
• SYNC interrupt facility

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

The AD5620 members of the nanoDAC^® family of devices, are low power, single, 12-bit, buffered voltage-out DACs and are guaranteed monotonic by design.

The AD5620 parts include an internal, 1.25 V, 5 ppm/°C reference, giving a full-scale output voltage range of 2.5 V. The AD5620 parts include an internal, 2.5 V, 5 ppm/°C reference, giving a full-scale output voltage range of 5 V. The reference associated with each part is available at the V_REFOUT pin.

The parts incorporate a power-on reset circuit to ensure that the DAC output powers up to 0 V (AD5620) or midscale (AD5620-3) and remains there until a valid write takes place. The parts contain 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 power consumption is 2.5 mW at 5 V, reducing to 1 μW in power-down mode.

The AD5620 on-chip precision output amplifier allows rail-to-rail output swing to be achieved. For remote sensing applications, the output amplifier’s inverting input is available to the user. The AD5620 use a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI^®, QSPI^™, MICROWIRE^™, and DSP interface standards.