AD5684RBRUZ-RL7

Overview

The AD5684RBRUZ-RL7 is a quad, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) from Analog Devices' nanoDAC+ family. It features an internal 2.5 V reference with a typical drift of 2 ppm/°C and operates on a single 2.7 V to 5.5 V supply. The device supports SPI interfaces up to 50 MHz and offers user-selectable gain settings of 1 or 2 via the GAIN pin, allowing full-scale outputs of 2.5 V or 5 V respectively. Key performance metrics include ±1 LSB maximum relative accuracy (INL), ±0.1% FSR gain error, and low power consumption of 3.3 mW at 3 V. It is housed in a compact 3 mm × 3 mm, 16-lead LFCSP package.

Feature Summary

• Quad 12-bit resolution with ±1 LSB maximum INL
• Internal 2.5 V reference with 2 ppm/°C typical temperature coefficient
• User-selectable gain (1x or 2x) for 2.5 V or 5 V full-scale output
• 50 MHz SPI interface with readback and daisy-chain capabilities

Applications

• Optical transceivers
• Base-station power amplifiers
• Process control PLC I/O cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify the specific ordering suffix RL7 confirms the reel packaging format if required for automated assembly. Ensure the B grade specification aligns with the required accuracy levels for the application. Confirm the LFCSP package dimensions match the PCB footprint design constraints. Check that the operating temperature range of −40°C to +105°C meets environmental requirements.

Selection Notes

Select this model when a quad-channel DAC with 12-bit resolution is needed. Choose the internal reference variant over external reference models if board space and component count are critical. Verify that the 2.7 V to 5.5 V supply range matches the system power architecture. Consider the 20 mA drive capability and capacitive load stability if driving heavy loads directly.

Part Context

This part belongs to the AD5686R/AD5685R/AD5684R family, differentiated primarily by resolution: 16-bit (AD5686R), 14-bit (AD5685R), and 12-bit (AD5684R). All members share identical pinouts, interfaces, and general specifications, differing only in digital resolution and associated accuracy metrics like INL. The BRUZ suffix indicates the 16-lead LFCSP package type.

Replacement Considerations

Direct functional replacements within the same family include AD5685R and AD5686R for higher resolution needs, provided the pinout compatibility is maintained. For external reference variants, consider AD5684 without the 'R' suffix, though this requires an external reference source. Ensure any substitute maintains the 12-bit resolution and quad-channel configuration.