AD5290YRMZ100

Analog Devices AD5290YRMZ100 — 100 kΩ, 256‑Position SPI Digital Potentiometer (AEC‑Q100)

The Analog Devices AD5290YRMZ100 is an automotive‑grade, single‑channel digital potentiometer that delivers precise, repeatable resistance adjustment over 256 positions (8‑bit resolution). With a linear taper, SPI‑compatible interface, and operation across −40°C to +125°C, this Y‑grade AEC‑Q100 qualified device is a dependable choice for calibration, trimming, and programmable gain/offset control in automotive and industrial systems. Packaged in a compact 10‑lead MSOP (RM‑10) and offered as lead‑free RoHS compliant (Z suffix), the AD5290YRMZ100 helps engineers realize digitally controlled resistive elements where space, reliability, and ease of control matter.

Why choose the AD5290YRMZ100?

• Automotive‑ready reliability: AEC‑Q100 (Y‑grade) qualification supports deployment in demanding automotive modules and harsh environments.
• Fine, repeatable adjustment: 256 discrete steps across a 100 kΩ end‑to‑end resistance enable predictable tuning and closed‑loop trimming.
• Simple digital control: SPI‑compatible interface integrates cleanly with common MCUs and digital logic for fast design‑in.
• Compact, solder‑friendly form factor: 10‑lead MSOP in a surface‑mount package suits dense layouts and multiboard assemblies.
• Environmentally compliant: Lead‑free and RoHS compliant (Z suffix) to simplify global supply and compliance workflows.

Key specifications

• Manufacturer/Brand: Analog Devices, Inc.
• Series: AD5290
• MPN: AD5290YRMZ100
• Category: Digital Potentiometers
• End‑to‑End Resistance: 100 kΩ
• Resolution: 256 positions (8‑bit)
• Channels: 1 (single channel)
• Interface: SPI‑compatible serial
• Wiper Memory: Volatile
• Taper: Linear
• Operating Temperature Range: −40°C to +125°C
• Automotive Qualification: AEC‑Q100 (Y‑grade)
• Package: 10‑lead MSOP (RM‑10)
• Mounting Type: Surface Mount
• RoHS Status: RoHS Compliant (Z suffix)
• Lifecycle Status: Active

Notes:

• Electrical parameters not explicitly listed above (for example, supply voltage, wiper resistance, absolute maximum ratings, or noise metrics) are not specified in datasheet here. Consult the official datasheet for design limits and conditions.

Package, pin count, and mounting

• Package format: MSOP‑10 (RM‑10)
• Pin count: 10
• Mount type: Surface mount (SMT)
• Packaging for shipment: Tube

The compact MSOP‑10 footprint supports high‑density designs and is compatible with standard SMT assembly processes. For production builds, ensure your PCB footprint aligns with the manufacturer’s RM‑10 land pattern recommendations, and apply standard reflow profiles suitable for lead‑free components.

Typical applications

The AD5290YRMZ100 is designed for precise digitally controlled resistance in scenarios where repeatability and environmental robustness are critical:

• Automotive systems and modules (AEC‑Q100): driver information modules, body electronics, lighting control modules, and infotainment subsystems
• Programmable gain/offset adjustment: gain setting in op‑amp circuits, DAC/ADC calibration paths, closed‑loop control tuning
• Calibration and trimming: end‑of‑line calibration of sensors and actuators, offset nulling, precision biasing
• Sensor conditioning: bridge sensor balancing, temperature sensor scaling, and current/voltage transducer adjustment
• General‑purpose variable resistance control: parameter setting in industrial control panels and instrumentation

How it adds value across engineering and sourcing

• Engineering teams benefit from SPI programmability, eliminating the drift and manual variability of mechanical potentiometers and enabling software‑controlled calibration in production.
• Buyers and sourcing managers gain from an active lifecycle status, established ADI supply chain, and automotive qualification that helps simplify platform approvals across programs.
• Compliance officers appreciate RoHS conformance and clear suffix coding (Z for lead‑free), making documentation and environmental reporting straightforward.

Design considerations and integration tips

• Power‑up behavior: The AD5290 stores the wiper position in a volatile register. After power cycles, the wiper resets and must be reloaded by the host controller. Plan firmware initialization sequences accordingly.
• SPI interface: Use clean signal integrity practices—short traces, controlled impedance (as needed), and appropriate pull‑ups/downs per system requirements. Decouple the device locally with a ceramic capacitor near the supply pin to reduce digital switching noise coupling into the wiper path. Exact pin assignments and electrical levels should be confirmed in the datasheet (not specified in datasheet here).
• Calibration routines: For production calibration, implement a deterministic routine that iterates through 256 steps or uses a binary search over the 8‑bit code to converge quickly to the target value.
• Thermal environment: With a specified operating range of −40°C to +125°C, ensure the application’s thermal design respects power dissipation constraints. Verify any temperature coefficients or derating in the datasheet for your tolerance stack‑up (not specified in datasheet here).
• Analog accuracy chain: Consider tolerance of the 100 kΩ element, wiper resistance, and linearity parameters when budgeting system error. Where critical, closed‑loop calibration can compensate process and temperature drift.
• Volatile vs. nonvolatile: If your system must retain settings without a host reinitialization, consider architectural measures such as mirroring the last known setpoint in system NVM or ensuring a deterministic boot routine that restores the intended code immediately on power‑up.

Lifecycle, ordering, and availability

Lifecycle status

• Status: Active (per provided data)
• Replacements: None listed
• Approved alternates: None listed

For the latest status, always refer to the Analog Devices product page.

Ordering information and part decoding

• AD5290YRMZ100
• AD5290: Device family (digital potentiometer)
• Y: Automotive grade (AEC‑Q100)
• RM: MSOP package
• Z: Lead‑free/RoHS compliant
• 100: 100 kΩ nominal end‑to‑end resistance

Confirm full ordering codes and any reel/tube options on the manufacturer’s product page to match your production needs.

Packaging and shipment

• Standard shipping: Tube
• Pin count: 10
• Mounting: Surface mount

If you require tape‑and‑reel for high‑volume SMT, check the product page for alternate ordering codes or packaging options (not specified in datasheet here).

Compliance and reliability

• Automotive: AEC‑Q100 (Y‑grade)
• Environmental: RoHS compliant; lead‑free (Z suffix)

Automotive qualification supports use in safety‑relevant and ruggedized applications when paired with appropriate system‑level design practices. For reliability reports, AEC stress test results, and PPAP documentation, consult the manufacturer’s resources.

Selection notes within the ADI portfolio

AD5290 belongs to a broader Analog Devices family of digital potentiometers. Variants may offer different resolutions, resistance values, or memory options. If your design needs nonvolatile wiper storage, different total resistance values, or alternative interfaces, review adjacent devices in the family on the Analog Devices website. Exact cross‑family specifications should be verified in the datasheets (not specified in datasheet here).

Specifications summary

• Function: Digital potentiometer (digipot)
• Brand: Analog Devices, Inc.
• Series: AD5290
• MPN: AD5290YRMZ100
• Resistance (End‑to‑End): 100 kΩ
• Resolution: 256 positions (8‑bit)
• Channels: 1
• Interface: SPI‑compatible
• Wiper Memory: Volatile
• Taper: Linear
• Operating Temperature: −40°C to +125°C
• Automotive Qualification: AEC‑Q100 (Y‑grade)
• Package: MSOP‑10 (RM‑10)
• Pin Count: 10
• Mounting: Surface Mount
• Packaging: Tube
• Lifecycle Status: Active
• RoHS Status: RoHS Compliant (Z suffix)

Any parameters outside this list are not specified in datasheet here; refer to the linked datasheet for complete electrical and timing characteristics.

Frequently asked questions (FAQs)

• Is the wiper position stored on power‑down?

• No. The AD5290 uses a volatile wiper register; the position is not retained once power is removed.

• What interface does the device use?

• An SPI‑compatible serial interface.

• How many adjustment steps are available?

• 256 discrete positions (8‑bit resolution).

• What is the total end‑to‑end resistance for AD5290YRMZ100?

• 100 kΩ nominal.

• Is the device automotive qualified?

• Yes. It is AEC‑Q100 qualified (Y‑grade).

• What is the operating temperature range?

• −40°C to +125°C.

• How many channels does it have?

• Single channel (1×).

• Is the taper linear or logarithmic?

• Linear taper.

• Does the AD5290YRMZ100 support I²C?

• No. Control is via an SPI‑compatible interface.

• Is this part RoHS compliant and lead‑free?

• Yes. The Z suffix indicates lead‑free, RoHS compliance.

Resources

• Product page: https://www.analog.com/en/products/ad5290.html
• Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/AD529052915292_5293.pdf

If your project requires PPAP, extended test data, or additional compliance documentation, consult the product page or your Analog Devices representative.

Final take

For engineers seeking a compact, digitally programmable 100 kΩ resistor with automotive‑ready reliability, the Analog Devices AD5290YRMZ100 delivers a practical balance of precision, control, and environmental robustness. Its 8‑bit resolution, SPI interface, and linear taper make it a strong fit for calibration, trimming, and sensor conditioning—while AEC‑Q100 qualification and RoHS compliance help streamline sourcing and compliance. Pair the device with a straightforward initialization routine at power‑up and you’ll have a durable, software‑controlled alternative to mechanical potentiometers across automotive and industrial designs.