AD5674RBCPZ-1

Overview

The AD5674RBCPZ-1 is a low-power, 16-channel, 12-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It features an internal 2.5 V reference with a typical temperature coefficient of 2 ppm/°C and a user-selectable gain pin for full-scale outputs of 2.5 V or 5 V. Operating on a single 2.7 V to 5.5 V supply, the device guarantees monotonicity by design and incorporates a power-on reset circuit to ensure zero-scale or midscale initialization. It utilizes a 50 MHz SPI interface and is housed in a compact 28-lead, 4 mm × 4 mm LFCSP package.

Feature Summary

• 16 channels integrated within a 4 mm × 4 mm LFCSP package
• Internal 2.5 V voltage reference with 2 ppm/°C typical drift
• User-selectable gain of 1 or 2 via GAIN pin
• 50 MHz serial peripheral interface (SPI) with readback capability

Applications

• Optical transceivers
• Base station power amplifiers
• Process control input/output cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify the specific suffix '-1' against the manufacturer's ordering guide to confirm the exact output power-up state configuration. The datasheet indicates that the '-1' suffix corresponds to devices where outputs power up to zero-scale. Ensure compatibility with the required logic voltage levels and thermal management strategies for the LFCSP package during procurement planning.

Selection Notes

Select this component when high channel density and low power consumption are critical. The AD5674RBCPZ-1 offers 12-bit resolution with ±1 LSB INL maximum. Consider the gain setting requirements; Gain = 1 provides a 0 V to 2.5 V range, while Gain = 2 extends it to 0 V to 5 V. Verify that the 50 MHz SPI speed meets the system timing constraints and that the 2.7 V to 5.5 V supply range aligns with the available power rails.

Part Context

This part belongs to the nanoDAC+ family, which integrates precision references and buffered outputs into small packages. The AD5674 variant specifically provides 12-bit resolution, whereas the AD5679 variant offers 16-bit resolution. Both share similar pinouts and interfaces but differ in linearity specifications and resolution capabilities. The 'R' designation typically implies the inclusion of an internal reference, while the '-1' suffix defines the power-up behavior.

Replacement Considerations

For direct replacements with identical pinouts and functionality, consider the AD5674BCPZ-1 (without internal reference) if an external reference is preferred, or the AD5679RBCPZ-1 for higher 16-bit resolution. Ensure that any substitute maintains the same LFCSP-28 package dimensions and SPI interface compatibility.