AD5679RBCPZ-1

Overview

The AD5679RBCPZ-1 is a 16-channel, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It features an internal 2.5 V reference with a typical temperature coefficient of 2 ppm/°C and operates on a single 2.7 V to 5.5 V supply. The device integrates a 50 MHz SPI interface with readback capability and includes a power-on reset circuit ensuring outputs start at zero-scale or midscale. Key performance metrics include a maximum integral nonlinearity (INL) of ±4 LSB, a settling time of 6 µs, and a signal-to-noise ratio (SNR) of 90 dB. It is housed in a 28-lead LFCSP package.

Feature Summary

• 16 channels with 16-bit resolution and ±4 LSB maximum INL
• Internal 2.5 V voltage reference with 2 ppm/°C temperature coefficient
• 50 MHz SPI serial interface with daisy-chain and readback support
• Power-on reset ensures zero-scale or midscale output initialization

Applications

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

Procurement Notes

Verify the specific suffix '-1' against the manufacturer's ordering guide to confirm the power-up state configuration. Ensure compatibility with the EVAL-AD5679RSDZ evaluation board for initial development. Confirm RoHS compliance status through official documentation before integration.

Selection Notes

Select this model for applications requiring high channel density in a compact 4 mm × 4 mm LFCSP footprint. Choose the 'R' variant if the internal reference is required, as opposed to external reference options. Verify that the 16-bit resolution and ±4 LSB INL meet system accuracy requirements compared to the 12-bit AD5674 series.

Part Context

This component belongs to the nanoDAC+ family, which provides multiple channels in small packages. The AD5679R differs from the AD5679 by including an internal reference. The '-1' suffix typically denotes specific power-up states, such as zero-scale, distinguishing it from other variants like '-2' which may default to midscale.

Replacement Considerations

The AD5679 (without R) serves as a direct replacement if an external voltage reference is utilized in the design. For lower resolution needs, the AD5674R offers a 12-bit alternative within the same package.