AD5676BRUZ

Overview

The AD5676BRUZ is an octal, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on a single 2.7 V to 5.5 V supply and features an external reference input. The device provides high relative accuracy with a maximum integral nonlinearity (INL) of ±3 LSB for the B grade. It includes a versatile 50 MHz SPI interface, user-selectable gain of 1 or 2 via the GAIN pin, and per-channel power-down modes that reduce current consumption to typically 1 µA. The component is housed in a 20-lead TSSOP package and supports operation across a temperature range of −40°C to +125°C.

Feature Summary

• Octal 16-bit resolution with ±3 LSB maximum INL (B Grade)
• External reference input supporting 0 V to VREF or 0 V to 2 × VREF spans
• 50 MHz SPI serial interface with readback capability
• Per-channel power-down mode reducing typical current to 1 µA

Applications

• Optical transceivers
• Base station power amplifiers
• Process control PLC input/output cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify the specific grade suffix (e.g., BRUZ vs. ARUZ) against the required accuracy specifications, as performance metrics like INL vary between grades. Confirm the package type matches the design footprint, as the AD5676 family also offers LFCSP variants. Ensure the external reference voltage aligns with the selected gain setting to maintain proper output ranges.

Selection Notes

Select the AD5676BRUZ when eight independent 16-bit channels are required with high linearity. The B grade guarantees ±3 LSB INL, suitable for precision applications. Choose this model over internal reference variants if system-level reference flexibility is needed. Verify that the host logic voltage levels are compatible with the 1.62 V to 5.5 V VLOGIC range.

Part Context

The AD5676 belongs to the nanoDAC+ family, designed for low-power, high-performance data conversion. It serves as the external reference counterpart to the AD5676R, which integrates an on-chip reference. The BRUZ designation specifically identifies the B grade version in the 20-lead TSSOP package, distinguishing it from the A grade and other packaging options within the same series.

Replacement Considerations

The AD5676ARUZ is a direct functional substitute with identical pinout but lower accuracy specifications (±8 LSB INL). For designs requiring an integrated reference, the AD5676RBRUZ is available, though it lacks the external reference input flexibility.