AD5687BRUZ-RL7

Overview

The AD5687BRUZ-RL7 is a dual, 12-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It operates on a single 2.7 V to 5.5 V supply and features an SPI interface with clock rates up to 50 MHz. The device includes user-selectable gain of 1 or 2, allowing full-scale outputs of 2.5 V or 5 V respectively. Key specifications include a maximum differential nonlinearity (DNL) of ±1 LSB, a settling time of 7 µs, and low power consumption of 3.3 mW at 3 V. It is housed in a 16-lead TSSOP package.

Feature Summary

• Dual-channel 12-bit resolution with ±1 LSB DNL and ±1 LSB INL accuracy
• SPI serial interface supporting 50 MHz clock rates with readback capability
• User-selectable gain via GAIN pin for 0–VREF or 0–2×VREF output spans
• Power-on reset circuit with RSTSEL pin for zero scale or midscale initialization

Applications

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

Procurement Notes

Verify the RL7 suffix indicates reel packaging with a standard factory quantity of 1000 units. Confirm the BRUZ designation corresponds to the industrial temperature range (-40°C to +105°C) and the 16-lead TSSOP package. Ensure compatibility with 1.8 V logic levels via the VLOGIC pin if interfacing with lower voltage microcontrollers.

Selection Notes

Select this component when a dual-channel DAC with 12-bit precision and SPI connectivity is required. The AD5687 is suitable for applications needing rail-to-rail output drive capability up to 20 mA. Consider the external reference input requirement, as this variant does not include an internal reference. Evaluate the 7 µs settling time against system speed requirements.

Part Context

This part belongs to the AD5689/AD5687 nanoDAC+ family, which shares identical pinouts and functional blocks. The AD5687 provides 12-bit resolution compared to the 16-bit AD5689. Both devices utilize the same 16-lead LFCSP and TSSOP packages and support identical SPI command sets and power-down modes.

Replacement Considerations

The AD5687R is a compatible alternative featuring an integrated internal reference, whereas the AD5687 requires an external reference. The AD5689 offers higher 16-bit resolution within the same package and interface configuration.