AD5664BCPZ-R2

Overview

The AD5664BCPZ-R2 is a quad, 16-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 rail-to-rail output swing. The device requires an external reference voltage and incorporates a power-on reset circuit that ensures outputs start at 0 V. It utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 50 MHz. Key performance metrics include a maximum relative accuracy of ±12 LSBs, a settling time of 7 μs, and low power consumption of 2.25 mW at 5 V.

Feature Summary

• Quad channel architecture with 16-bit resolution and rail-to-rail buffered voltage outputs
• 3-wire serial interface (SYNC, SCLK, DIN) operating at clock rates up to 50 MHz
• Power-on reset function forces DAC outputs to 0 V upon initialization
• Per-channel power-down mode reduces current consumption to 480 nA at 5 V

Applications

• Process control systems
• Data acquisition systems
• Portable battery-powered instruments
• Programmable voltage and current sources
• Digital gain and offset adjustment circuits

Procurement Notes

Verify the specific grade (A or B) and package variant (LFCSP_WD vs MSOP) against the datasheet specifications, as the base model number covers multiple configurations. Confirm that the external reference voltage requirements align with the system design, as this component does not include an internal reference. Ensure the serial interface timing parameters meet the microcontroller or DSP capabilities.

Selection Notes

Select the AD5664BCPZ-R2 when four independent 16-bit voltage outputs are required in a low-power application. This part is suitable for designs needing rail-to-rail output swing without external amplifiers. Consider the 7 μs settling time and ±12 LSB relative accuracy for precision requirements. Verify compatibility with the host controller's serial protocol support for 3-wire interfaces.

Part Context

The AD5664 belongs to Analog Devices' nanoDAC family, which focuses on low-power, high-resolution DAC solutions. It is distinct from the AD5624 (12-bit) and the AD56x4R series (which includes an internal reference). The 'BCPZ-R2' suffix indicates a specific commercial grade, LFCSP_WD package, and reel packaging configuration within the broader AD5664 product line.

Replacement Considerations

For direct functional replacements with integrated references, consider the AD5664R series. For lower resolution needs, the AD5624 offers 12-bit performance. If I2C interface is preferred over SPI, the AD5667 series is an alternative. Ensure pinout compatibility if substituting between MSOP and LFCSP packages.