AD5680BRJZ-1500RL7

Overview

The AD5680BRJZ-1500RL7 is a single, 18-bit buffered voltage-output digital-to-analog converter (DAC) from the nanoDAC family. It operates from a single 4.5 V to 5.5 V supply and guarantees 12-bit accuracy despite its 18-bit resolution. The device features an internal resistor string architecture with an interpolator to achieve monotonicity. It includes a power-on reset circuit that initializes the output to zero scale or midscale. The DAC utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 30 MHz. Power consumption is typically 1.6 mW at 5 V.

Feature Summary

• 18-bit resolution with guaranteed 12-bit accuracy
• Single 4.5 V to 5.5 V power supply operation
• Rail-to-rail output swing with on-chip precision amplifier
• Power-on reset to zero scale or midscale
• 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 '1500RL7' against the manufacturer's current ordering guide to confirm packaging quantity and tape/reel specifications. Ensure the B-grade temperature range of −40°C to +105°C meets the operational requirements. Confirm that the required power-on reset state (zero scale vs. midscale) corresponds to the correct sub-model variant within the AD5680 family.

Selection Notes

Select this component when high resolution is needed in a compact SOT-23 package. The 18-bit resolution is achieved via interpolation; however, accuracy is specified at 12 bits. Ensure the application can accommodate the 80 µs settling time for full-scale changes. The device requires an external reference voltage unless VREF is tied to VDD. Check if the 30 MHz serial clock speed is necessary for the host microcontroller interface.

Part Context

The AD5680 belongs to Analog Devices' nanoDAC family, designed for low-power, space-constrained applications. It is related to the AD5662, which offers 16-bit resolution in the same package. The BRJZ designation indicates the B-grade temperature range and the SOT-23-8 package type. The part is manufactured by Analog Devices Inc.

Replacement Considerations

The AD5662 is a related 16-bit device in the same SOT-23 package. Substitution requires verifying pin compatibility and checking if the reduced resolution and different settling characteristics meet the system requirements. No other direct cross-references are provided in the datasheet.