AD5680BRJZ-2REEL7

Overview

The AD5680BRJZ-2REEL7 is a single-channel, 18-bit buffered voltage-output digital-to-analog converter (DAC) from the nanoDAC family. It operates on a single 4.5 V to 5.5 V supply and features an internal power-on reset circuit that forces the output to midscale upon initialization. The device utilizes a resistor string architecture with an interpolator to achieve 18-bit resolution from a 16-bit core. It incorporates a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 30 MHz. The part includes a rail-to-rail output amplifier and requires an external reference voltage.

Feature Summary

• 18-bit monotonic resolution with guaranteed 12-bit accuracy
• Power-on reset to midscale for AD5680-2 variant
• Rail-to-rail output swing with remote sensing capability via VFB pin
• 3-wire serial interface supporting SCLK frequencies up to 30 MHz

Applications

• Closed-loop process control systems
• Low bandwidth data acquisition applications
• Portable battery-powered instruments
• Precision setpoint control circuits
• Gain and offset adjustment modules

Procurement Notes

Verify the suffix '2' in the part number AD5680BRJZ-2REEL7 confirms the midscale power-on reset configuration. Confirm the package type is SOT-23 and the temperature grade is Industrial (-40°C to +105°C). Ensure the external reference voltage source meets the input range requirements of 0.75 V to VDD.

Selection Notes

Select this component when high resolution (18-bit) is required in a minimal footprint. The AD5680-2 variant is necessary if the application demands a known midscale output state immediately after power-up. Ensure the system bandwidth accommodates the DAC update rate and settling time specifications. Verify that the serial interface logic levels are compatible with the host microcontroller.

Part Context

This component belongs to the AD5680 nanoDAC family, which also includes the AD5680-1 variant that resets to zero scale. Related devices in the Analog Devices portfolio include the AD5662, a 16-bit DAC in a similar package. The AD5680 distinguishes itself through its 18-bit interpolation architecture and integrated rail-to-rail output buffer.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.