AD5674RBCPZ-2

Overview

The AD5674RBCPZ-2 is a low-power, 16-channel, 12-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 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 utilizes a 50 MHz SPI interface with readback or daisy-chain capabilities and is housed in a 28-lead, 4 mm × 4 mm LFCSP package.

Feature Summary

• 16 channels integrated in a compact 4 mm × 4 mm LFCSP package
• Internal 2.5 V voltage reference with 2 ppm/°C typical temperature coefficient
• User-selectable gain of 1 or 2 via the GAIN pin for 2.5 V or 5 V full-scale output
• 50 MHz serial peripheral interface (SPI) supporting readback and daisy-chain modes

Applications

• Optical transceivers
• Base station power amplifiers
• Process control programmable logic controller (PLC) input/output cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify that the specific suffix 'BCPZ-2' corresponds to the exact package variant and internal reference configuration required for the design. Confirm that the ordering code matches the 12-bit resolution variant rather than the 16-bit AD5679 series. Ensure compatibility with the 28-lead LFCSP footprint during PCB layout verification.

Selection Notes

Select this component when high channel density is required within a small form factor. The internal reference eliminates the need for external precision components, simplifying the bill of materials. Verify that the 12-bit resolution meets system accuracy requirements, as the 16-bit AD5679R offers higher relative accuracy but may not be necessary for all applications.

Part Context

This part belongs to the nanoDAC+ family, which integrates DACs with on-chip references and output buffers. The AD5674R is the 12-bit version of the AD5679R, sharing identical pinouts and interfaces. The 'R' designation indicates the presence of an internal reference, while 'BCPZ' specifies the lead frame chip scale package and RoHS compliance.

Replacement Considerations

The AD5674RBCPZ is the non-reference version of this device, requiring an external reference. The AD5679RBCPZ-2 is the 16-bit equivalent with higher INL accuracy. Both share the same package and interface, allowing for potential pin-compatible upgrades if higher resolution is needed.