AD5689RACPZ-RL7

Overview

The AD5689RACPZ-RL7 is a dual, 16-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 user-selectable gain settings of 1 or 2 via the GAIN pin. Key electrical parameters include a maximum integral nonlinearity (INL) of ±2 LSB, a settling time of 5 µs, and a low glitch impulse of 0.5 nV-sec. It is housed in a compact 3 mm × 3 mm, 16-lead LFCSP package.

Feature Summary

• Dual 16-bit resolution with high relative accuracy (±2 LSB max INL).
• Integrated 2.5 V reference with low temperature drift (2 ppm/°C typical).
• User-selectable output span: 0 V to VREF (Gain = 1) or 0 V to 2 × VREF (Gain = 2).
• Power-on reset circuit ensures outputs initialize to zero scale or midscale.

Applications

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

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm that the A grade corresponds to the required accuracy specifications for the application. Ensure compatibility with the 1.62 V to 5.5 V logic voltage range (VLOGIC) used in the target system interface.

Selection Notes

Select this component if a dual-channel solution with integrated low-drift reference is required. The GAIN pin allows flexibility between 2.5 V and 5 V full-scale outputs without external components. Verify that the 16-bit resolution and ±2 LSB INL meet the system's linearity requirements compared to lower-resolution alternatives like the AD5687R.

Part Context

This part belongs to the AD5689R/AD5687R nanoDAC+ family, which also includes 12-bit variants and devices with external reference options. The AD5689R specifically denotes the 16-bit resolution model. The A grade specifies the performance bin for accuracy parameters such as INL and offset error within the specified temperature range.

Replacement Considerations

The AD5689RBCPZ-RL7 is a B grade version of the same device offering tighter accuracy specifications. For 12-bit applications, the AD5687RACPZ-RL7 serves as a functional alternative within the same package and feature set.