AD5679BCPZ-1-RL7

Overview

The AD5679BCPZ-1-RL7 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 supports a user-selectable gain of 1 or 2 via the GAIN pin, enabling full-scale outputs of 2.5 V or 5 V respectively. It utilizes a 50 MHz SPI interface with readback capability and incorporates a power-on reset circuit ensuring zero-scale or midscale output initialization. Packaged in a 28-lead, 4 mm × 4 mm LFCSP, it guarantees monotonic operation across a -40°C to +125°C temperature range.

Feature Summary

• 16 channels with 16-bit resolution and ±4 LSB maximum integral nonlinearity (INL).
• Internal 2.5 V voltage reference with low drift (2 ppm/°C typical).
• User-selectable gain (×1 or ×2) for 2.5 V or 5 V full-scale output ranges.
• 50 MHz SPI interface with daisy-chain and readback support.

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 official documentation to confirm power-up state behavior, as standard variants may differ. Confirm RoHS compliance status and lead-free soldering requirements for the LFCSP package. Ensure the reel packaging quantity matches production needs. Validate that the operating voltage range aligns with system power rails.

Selection Notes

Select this component when high channel density and precision are required in a compact footprint. The internal reference simplifies design by eliminating external components. Choose the gain setting based on the desired output voltage swing relative to the reference. Ensure the load capacitance does not exceed stability limits without appropriate series resistance.

Part Context

This part belongs to the nanoDAC+ family, which integrates high-resolution DACs with precision references. The AD5679 variant specifically offers 16-bit performance compared to the 12-bit AD5674. The 'RL7' suffix indicates tape and reel packaging for automated assembly. The device shares architectural similarities with other members like the AD5676 but differs in channel count and resolution.

Replacement Considerations

Direct replacements within the same family include the AD5679R (external reference version) or AD5674/AD5674R (12-bit versions). Verify pin compatibility and software register mapping when substituting. Check if the external reference requirement of the R-series variant fits the board space constraints.