AD5676ARUZ-REEL7

Overview

The AD5676ARUZ-REEL7 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 with user-selectable gain of 1 or 2. The device utilizes a versatile SPI interface supporting clock rates up to 50 MHz. Key performance metrics include a maximum integral nonlinearity (INL) of ±3 LSB for Grade B and a typical power consumption of 1.26 mA in normal mode. It is housed in a 20-lead TSSOP package and supports an operating temperature range of −40°C to +125°C.

Feature Summary

• Octal 16-bit resolution with segmented string DAC architecture ensuring monotonicity.
• External reference input with selectable gain of 1 (VREF) or 2 (2 × VREF).
• High-speed 50 MHz SPI interface with readback and daisy-chain capabilities.
• Integrated power-on reset circuit allowing zero scale or midscale startup via RSTSEL pin.

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 (A or B) required for your application, as INL specifications differ between grades. Confirm that the external reference voltage aligns with the selected gain setting to ensure the output stays within the supply rails. Ensure the PCB layout accounts for the thermal resistance of the 20-lead TSSOP package if operating at high junction temperatures.

Selection Notes

Select the AD5676ARUZ variant for standard surface-mount assembly in a 20-lead TSSOP package. Choose the -REEL7 suffix for tape-and-reel packaging suitable for automated pick-and-place manufacturing processes. Verify that the system logic levels are compatible with the VLOGIC pin range of 1.62 V to 5.5 V.

Part Context

This component belongs to the nanoDAC+ family, which integrates precision DACs with internal buffers. Unlike the AD5676R variant, this model requires an external voltage reference. It shares the same octal channel count and 16-bit resolution as other members but distinguishes itself through its external reference architecture and specific gain configuration options.

Replacement Considerations

The AD5676ARUZ is functionally interchangeable with other AD5676 variants sharing the same package and interface, such as the AD5676BRUZ. When substituting, verify that the replacement part meets the required Integral Nonlinearity (INL) grade (A or B) and confirm that the gain selection mechanism (hardware pin vs. register bit) matches the existing design constraints.