AD5679RBCPZ-2

Overview

The AD5679RBCPZ-2 is a 16-channel, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It integrates a 2.5 V internal reference with a typical temperature coefficient of 2 ppm/°C and features a user-selectable gain pin for full-scale outputs of 2.5 V or 5 V. The device operates on a single 2.7 V to 5.5 V supply and includes a power-on reset circuit ensuring zero-scale or midscale startup. It communicates via a 50 MHz SPI interface with readback capabilities and supports daisy-chain configurations. Packaged in a 28-lead, 4 mm × 4 mm LFCSP, it offers high channel density with ±4 LSB maximum integral nonlinearity.

Feature Summary

• 16 channels with 16-bit resolution and ±4 LSB maximum INL
• Integrated 2.5 V reference with 2 ppm/°C typical temperature coefficient
• User-selectable gain (×1 or ×2) for 2.5 V or 5 V full-scale output
• 50 MHz SPI interface with readback and daisy-chain support

Applications

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

Procurement Notes

Verify the specific suffix '-2' against official documentation to confirm the power-up state configuration, as this variant determines whether outputs initialize to zero-scale or midscale upon reset. Ensure compatibility with the 28-lead LFCSP footprint during procurement planning.

Selection Notes

Select the AD5679RBCPZ-2 when high channel density and low drift are required. The integrated reference eliminates external components, while the selectable gain allows flexibility between 2.5 V and 5 V ranges. Verify that the 16-bit resolution and ±4 LSB INL meet system accuracy requirements compared to lower-resolution alternatives like the AD5674.

Part Context

This component belongs to the nanoDAC+ family, which emphasizes high integration and low power consumption. The AD5679R variant specifically includes the internal reference, distinguishing it from the standard AD5679 which requires an external reference source. The 'R' designation indicates the presence of the on-chip voltage reference.

Replacement Considerations

The AD5679RBCPZ-1 serves as a direct functional replacement if a zero-scale power-up state is preferred over the midscale initialization provided by the -2 suffix.