AD5685RBCPZ-RL7

Overview

The AD5685RBCPZ-RL7 is a quad, 14-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 SPI interfaces up to 50 MHz with readback or daisy-chain capabilities. Key electrical parameters include a maximum Integral Nonlinearity (INL) of ±1 LSB, a settling time of 5 µs, and a low glitch impulse of 0.5 nV-sec. It provides high drive capability of 20 mA and includes user-selectable gain settings for full-scale outputs of 2.5 V or 5 V.

Feature Summary

• Quad 14-bit resolution with ±1 LSB maximum INL
• Internal 2.5 V reference with 2 ppm/°C typical temperature coefficient
• 50 MHz SPI interface with readback and daisy-chain support
• High drive capability: 20 mA output current

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 corresponds to the reel packaging configuration required for the assembly line. Confirm that the B grade accuracy specifications meet the design requirements for integral nonlinearity and offset error. Ensure the LFCSP-16 package footprint matches the PCB layout guidelines provided in the datasheet.

Selection Notes

Select this component when a quad-channel DAC with integrated precision reference is needed. The AD5685R offers 14-bit resolution, suitable for applications requiring moderate accuracy without external references. Consider the GAIN pin configuration to determine if a 2.5 V or 5 V full-scale output range is required. Verify logic voltage compatibility via the VLOGIC pin for 1.8 V, 3 V, or 5 V systems.

Part Context

This part belongs to the AD5686R/AD5685R/AD5684R nanoDAC+ family, differentiated primarily by resolution (16-bit, 14-bit, and 12-bit respectively). All members share identical pinouts, interfaces, and performance characteristics except for resolution and relative accuracy grades. The BC suffix indicates the LFCSP package and B grade accuracy.

Replacement Considerations

The AD5686R and AD5684R are direct pin-compatible alternatives within the same family, offering 16-bit and 12-bit resolutions respectively. For external reference configurations, the AD5686 and AD5684 models are available. No other cross-family replacements are confirmed in the provided documentation.