AD5684RARUZ

Overview

The AD5684RARUZ is a quad, 12-bit buffered voltage output digital-to-analog converter (DAC) from the 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 a 50 MHz SPI interface with readback or daisy-chain capabilities and includes a VLOGIC pin for 1.8 V logic compatibility. Key specifications include ±1 LSB maximum INL, 7 µs settling time, and low power consumption of 3.3 mW at 3 V. It offers user-selectable gain (1 or 2) via the GAIN pin and per-channel power-down modes reducing current to 4 µA.

Feature Summary

• Quad 12-bit resolution with ±1 LSB maximum integral nonlinearity (INL)
• Internal 2.5 V reference with 2 ppm/°C typical temperature coefficient
• 50 MHz SPI interface with 1.8 V logic compatibility via VLOGIC pin
• User-selectable gain of 1 or 2 using the GAIN pin for flexible output range

Applications

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

Procurement Notes

Verify the specific package variant, as the datasheet lists both LFCSP and TSSOP options within the AD5684R series. Confirm that the ordering suffix corresponds to the required physical footprint and tape/reel or tube packaging configuration before procurement.

Selection Notes

Select this component when a quad-channel DAC with high relative accuracy and low drift is required. Ensure the application supports the 2.7 V to 5.5 V analog supply range and utilizes an SPI master capable of 50 MHz clock rates. Consider the GAIN pin configuration if a full-scale output exceeding VREF is needed.

Part Context

The AD5684R belongs to the nanoDAC+ family, which also includes the 16-bit AD5686R and 14-bit AD5685R. These devices share identical pinouts, interfaces, and core features, differing primarily in resolution and associated accuracy metrics such as INL and offset error specifications.

Replacement Considerations

The AD5685R and AD5686R are pin-compatible alternatives offering higher resolutions (14-bit and 16-bit, respectively). For external reference applications, the AD5684 serves as a direct replacement for the AD5684 without the 'R' suffix.