AD5680BCPZ-1RL7

Overview

The AD5680BCPZ-1RL7 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 8-lead SOT-23 package. The device guarantees 12-bit accuracy despite its 18-bit resolution and includes a power-on reset circuit that forces the output to zero scale upon initialization. It utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 30 MHz. The internal architecture employs a resistor string DAC followed by an interpolator to achieve high resolution.

Feature Summary

• 18-bit resolution with guaranteed 12-bit accuracy
• Power-on reset to zero scale or midscale
• Rail-to-rail output operation in an 8-lead SOT-23 package
• 3-wire serial interface with SYNC interrupt facility

Applications

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

Procurement Notes

Verify the specific suffix '-1' indicates the zero-scale power-on reset variant when ordering. Confirm the package type matches the required footprint, as the datasheet notes an 8-lead LFCSP option exists for this part number family. Ensure the external reference voltage source meets the input range specifications of 0.75 VDD to VDD for optimal performance.

Selection Notes

Select the AD5680BCPZ-1RL7 for applications requiring high resolution in a minimal footprint. The B grade ensures operation across the industrial temperature range of −40°C to +105°C. Consider the 1.6 mW typical power consumption at 5 V for battery-operated designs. Verify that the system can accommodate the 80 µs settling time for full-scale changes if speed is a critical constraint.

Part Context

This component belongs to Analog Devices' nanoDAC family, designed for low-power, high-resolution applications. The AD5680 specifically targets systems needing 18-bit precision without the complexity of multi-channel devices. It serves as a bridge between digital control logic and analog actuation or sensing requirements in compact electronic assemblies.

Replacement Considerations

The AD5662 is a related 16-bit device in the same SOT-23 package. Users requiring lower resolution but potentially different power characteristics may consider this alternative. No direct pin-compatible replacements with identical 18-bit specifications are listed in the provided documentation.