AD5664RBRMZ-5

Analog Devices AD5664RBRMZ-5 nanoDAC+ — Quad 16-bit DAC with Internal Reference, 0–5 V Output

Overview

The Analog Devices AD5664RBRMZ-5 is a member of the nanoDAC+ family, delivering four precision 16-bit voltage outputs in a compact MSOP-10 package. It integrates a stable 2.5 V on-chip reference and a buffered output stage with an internal gain setting that yields a convenient 0 to 5 V output range for the “-5” option. With an SPI-compatible serial interface and a small footprint, the AD5664RBRMZ-5 enables space- and cost-efficient precision control in industrial and instrumentation designs.

Engineers looking to streamline precision analog output channels—without the overhead of external references and amplifiers—will find the AD5664RBRMZ-5 a practical fit. It combines resolution, channel density, and ease of use, accelerating time-to-market for programmable sources, PLC I/O modules, and test-and-measurement equipment.

Highlights at a Glance

• Brand and family: Analog Devices nanoDAC+
• Part number (MPN): AD5664RBRMZ-5
• Channels: 4 independent voltage-output DACs
• Resolution: 16-bit
• Architecture: Resistor-String (R-String)
• Interface: SPI-compatible serial
• Integrated reference: 2.5 V on-chip reference (buffered)
• Output range: 0 to 5 V for the “-5” option (internal gain = 2)
• Output type: Voltage, buffered
• Supply voltage: 2.7 V to 5.5 V
• Package: MSOP-10 (10-lead), surface-mount
• Category: Data Converters > Digital-to-Analog Converters (DAC)

Key Specifications

• Resolution: 16-bit
• Channels: 4
• Architecture: Resistor-String (R-String)
• Interface: SPI-compatible serial
• Reference: On-chip 2.5 V (buffered)
• Output type: Voltage, buffered
• Output range: 0 to 5 V for the -5 option (internal gain = 2)
• Supply voltage: 2.7 V to 5.5 V
• Package: MSOP-10; surface-mount; 10 pins

Not specified in datasheet excerpt provided: absolute accuracy, INL/DNL, settling time, glitch impulse, output drive limits, and operating temperature. Consult the datasheet for full electrical characteristics and timing.

Architecture and Operation

R-String precision, simplified

The AD5664RBRMZ-5 uses a resistor-string (R-String) topology. R-String DACs are known for excellent monotonicity and predictable code-to-voltage transfer, making them a strong choice for precision setpoint control and slow-to-moderate update-rate applications. Each channel’s output is generated by tapping a precision resistor ladder according to the 16-bit digital code, then buffering the result at the output.

Integrated reference with 0–5 V output (-5 option)

A key differentiator of the AD5664RBRMZ-5 is the integrated 2.5 V on-chip reference. In the “-5” ordering option, the device applies an internal gain of 2 so that full-scale codes map to a 0 to 5 V output range. This eliminates the need for an external precision reference and an external gain stage in many systems, reducing bill of materials, layout complexity, and calibration overhead.

SPI-compatible serial control

The quad channels are programmed via an SPI-compatible serial interface. This familiar interface eases integration with a wide range of microcontrollers and FPGAs, and allows you to sequence or update channels under firmware control. Refer to the datasheet for command formats, timing requirements, and any device-specific protocol nuances.

Buffered voltage outputs

Each DAC output is buffered, providing a low-impedance voltage source for typical control and instrumentation loads. Output drive capabilities, load limits, and stability considerations are application-dependent; always validate against the datasheet’s output amplifier specifications and recommended loading conditions.

Design and Integration Notes

Power supply and decoupling

• Operates from a single 2.7 V to 5.5 V supply. Choose a supply rail that supports the required logic levels and output range.
• Place local decoupling capacitors close to the device supply pins. Use a solid ground reference and short return paths to minimize noise coupling into the DAC outputs and reference node.

Reference strategy

• The AD5664RBRMZ-5 includes a 2.5 V on-chip reference; the “-5” configuration leverages an internal gain to provide a 0 to 5 V span. This simplifies achieving a 5 V output range without external reference circuitry.
• For applications with specialized reference needs, consult the datasheet for reference modes and any provisions for external references available on other variants; behavior can differ across family members and ordering options.

SPI layout and firmware considerations

• Keep SPI traces short and matched where practical, with proper grounding to reduce ringing and crosstalk.
• Confirm SPI mode, bit ordering, and timing parameters in firmware per the datasheet.
• Sequence channel updates and power-up behavior according to the recommended initialization flow to avoid unintended output transients.

Output loading and filtering

• Evaluate output load impedance and capacitive loading to ensure stable operation of the output buffer.
• If additional analog filtering is required (for noise reduction or bandwidth control), use passive RC networks placed close to the outputs, verifying stability and settling behavior in your design conditions.

Layout and grounding best practices

• Partition analog and digital sections, tying grounds at a low-impedance point.
• Route analog outputs away from high-speed digital clocks and switching nodes.
• Use star routing for sensitive reference and supply nodes where appropriate.

Why Choose the AD5664RBRMZ-5?

• Integration reduces risk and BOM: On-chip 2.5 V reference and buffered outputs with the -5 option’s internal gain simplify achieving 0–5 V outputs per channel.
• High resolution, multiple channels: Four 16-bit outputs enable tightly controlled multi-channel setpoints in compact control modules.
• Proven architecture: R-String DACs deliver monotonic performance and straightforward code-to-voltage characteristics.
• Small, surface-mount package: The MSOP-10 footprint supports dense layouts and cost-effective assembly.
• Vendor support: Part of the Analog Devices nanoDAC+ series, with documentation and ecosystem familiarity in industrial control.

Applications and Use Cases

The Analog Devices AD5664RBRMZ-5 is well-suited to precision control functions across industrial and measurement markets:

• Industrial control and automation: Generate analog setpoints for actuators, drives, and control loops with stable, repeatable outputs.
• Process control and PLC I/O: Provide analog output channels for PLC modules, distributed I/O, and programmable setpoints.
• Programmable voltage sources: Create multi-channel programmable outputs for calibration fixtures or device characterization.
• Test and measurement instrumentation: Implement precision outputs for function generators, biasing circuits, or sensor simulation.
• Data acquisition systems: Pair with ADCs to form bidirectional measurement and control paths, including closed-loop control.

Lifecycle, Sourcing, and Packaging

• Lifecycle status: Active (per Analog Devices product line information provided).
• Replacements: No direct replacements specified by the manufacturer in the provided data.
• RoHS/lead-free: RoHS compliant; Z suffix denotes lead-free.
• Package: MSOP-10 (10-lead), surface-mount.
• Packaging formats: Orderable suffixes can indicate packaging type (for example, tape-and-reel options may exist). Confirm the exact ordering code; packaging may vary by specific suffix (e.g., -REEL7) per distributor listings.

Sourcing tips:

• Use the exact MPN “AD5664RBRMZ-5” when searching authorized distributors to ensure the 0–5 V output option.
• If drop-in alternates are required, review the broader nanoDAC+ family and consult the datasheet/product page to verify pinout and functional equivalence. No alternates are provided in the data above.

Compliance and Environmental

• RoHS status: RoHS Compliant; lead-free (Z suffix).
• Additional environmental details: Not specified in the provided data. For full material declaration and environmental documentation, refer to Analog Devices compliance resources.

Family Context and Scalability

The AD5664RBRMZ-5 is documented alongside closely related nanoDAC+ family members in the same datasheet. Family variants may offer different resolution points or reference options. If your design can trade resolution, reference selection, or output range for cost or power, consult the datasheet and product page for variant selection guidance. Always verify pin compatibility and configuration differences before substitution.

Practical Integration Workflow

1. Define output span and resolution needs. The AD5664RBRMZ-5 provides four 16-bit channels spanning 0 to 5 V using its on-chip reference and internal gain.
2. Select supply voltage (2.7 V to 5.5 V) consistent with your system IO and noise goals.
3. Budget for decoupling near the supply and any reference pins recommended by the datasheet.
4. Implement SPI transactions per the device’s command map, verifying any required initialization steps.
5. Validate output behavior across expected load and temperature conditions. For parameters not specified above, rely on the full datasheet.
6. Plan for manufacturability: MSOP-10 footprint, stencil design, and inspection guidelines are straightforward for modern assembly lines.

Frequently Asked Questions (FAQs)

• What does the “-5” option indicate for AD5664RBRMZ-5?

• The -5 option uses the on-chip 2.5 V reference with an internal gain of 2 to provide a 0 to 5 V output range.

• What is the package for AD5664RBRMZ-5?

• It is supplied in a 10-lead MSOP (RM-10) package.

• What interface does the AD5664R use?

• An SPI-compatible serial interface.

• How many DAC channels are available?

• Four independent voltage-output channels.

• What supply voltage range does it support?

• 2.7 V to 5.5 V.

• Is it RoHS compliant?

• Yes. It is RoHS Compliant; the Z suffix indicates a lead-free variant.

• Does it require an external reference?

• For the AD5664RBRMZ-5 option, the on-chip 2.5 V reference and internal gain provide a 0 to 5 V output span. Refer to the datasheet for details on reference configuration and any external-reference options available on other variants.

• What environmental/temperature range does it cover?

• Not specified in the information provided here. Consult the datasheet for operating temperature and related environmental specifications.

Resources

• Product page: https://www.analog.com/en/products/ad5664r.html
• Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ad5624r5644r5664r.pdf

If your design hinges on parameters not listed above—such as gain/offset error, INL/DNL, settling time, or digital timing tolerances—use the official Analog Devices AD5664R datasheet as the source of truth. The Analog Devices AD5664RBRMZ-5 integrates reference, buffering, and SPI control to simplify multi-channel precision output generation, helping engineers deliver compact, reliable analog output subsystems with fewer external parts.