Part A
AD5260BRUZ50
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5431 Stückzahl
- Package
- TSSOP-14
- Series
- Datenerfassung
Replacement verdict
Compatible functional replacement candidate
The AD5260BRUZ20 and AD5260BRUZ50 share the same 1-channel digital potentiometer architecture, TSSOP-14 package, SPI-compatible interface, and 256-position resolution, making them functionally interchangeable in most designs. The primary distinction is the end-to-end resistance of 20 kΩ versus 50 kΩ, which directly affects the current through the wiper and the resulting voltage division ratio. Designers must verify that the surrounding circuit tolerances, load impedance, and power dissipation remain within specification when substituting one resistance value for the other.
End-to-End Resistance
Not compatible
Package Type
High match
Interface Type
High match
Resolution
High match
Parts at a glance
Part B
AD5260BRUZ20
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4908 Stückzahl
- Package
- TSSOP-14
- Series
- Datenerfassung
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5260BRUZ20 | AD5260BRUZ50 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 20 kΩ | 50 kΩ | Sets the nominal resistance range of the digital potentiometer and directly affects the current through and voltage across the device in a given circuit. |
| Number of Positions | 256 | 256 | Determines the resolution or number of discrete wiper settings available for adjustment. |
| Number of Taps | 256 | 256 | Defines the number of selectable resistance steps between terminal A and terminal B. |
| Interface Type | SPI | SPI | Specifies the digital communication protocol used to control the wiper position, affecting compatibility with host controllers. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Determines the allowable power supply voltage for proper operation and logic-level compatibility. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Indicates the environmental conditions under which the device is guaranteed to function within specification. |
| Package / Mounting Type | 14-TSSOP / Surface Mount | 14-TSSOP / Surface Mount | Ensures physical and PCB footprint compatibility for drop-in replacement. |
| Resistance Tolerance | ±30 % | ±30 % | Specifies the allowable deviation of the actual end-to-end resistance from the nominal value, impacting circuit accuracy. |
| Wiper Resistance | 60 Ω typ | 60 Ω typ | Represents the parasitic resistance of the internal switch at the wiper, affecting the minimum achievable resistance and signal integrity. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5260BRUZ50 | AD5260BRUZ20 |
|---|---|---|
| Part Status | Active | Active |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 1 | 1 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 50k | 20k |
| Interface | SPI | SPI |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 4.5V ~ 16.5V, ±5V | 4.5V ~ 16.5V, ±5V |
| Features | Cascade Pin | Cascade Pin |
| Tolerance | ±30% | ±30% |
| Temperature Coefficient(Typ) | 35ppm/°C | 35ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What is the primary difference between the AD5260BRUZ20 and AD5260BRUZ50?
The primary difference is the end-to-end resistance value of the digital potentiometer. The AD5260BRUZ20 has a 20 kΩ nominal resistance, while the AD5260BRUZ50 has a 50 kΩ nominal resistance. Both are single-channel, 256-position, SPI-compatible digital potentiometers from Analog Devices in a 14-lead TSSOP package.
Are the AD5260BRUZ20 and AD5260BRUZ50 pin-compatible?
Yes. Both devices are offered in the same 14-lead TSSOP (RU-14) package and share the same pinout. The only difference is the internal resistor array value, so they are pin-to-pin compatible in PCB layout terms.
Can the AD5260BRUZ20 and AD5260BRUZ50 be used interchangeably in a design?
Not without verifying the circuit. Because the end-to-end resistance differs (20 kΩ vs 50 kΩ), the wiper resistance, power dissipation, and the resulting voltage or current in the target application will differ. The replacement is only valid if the design tolerates the new resistance value and all associated performance parameters are revalidated.
What is the resolution and number of positions for both the AD5260BRUZ20 and AD5260BRUZ50?
Both devices provide 256 positions (8-bit resolution) with a nominal end-to-end resistance of 20 kΩ or 50 kΩ depending on the model. They are single-channel digital potentiometers with an SPI-compatible serial interface.
Do the AD5260BRUZ20 and AD5260BRUZ50 have the same operating voltage range?
Yes. Both devices operate from a single supply of 2.7 V to 5.5 V, or from dual supplies of ±2.5 V to ±2.75 V, as specified in the Analog Devices AD5260 datasheet. The supply range is independent of the resistance option.
What is the typical wiper resistance for the AD5260BRUZ20 and AD5260BRUZ50?
The datasheet specifies a typical wiper resistance of 60 Ω for both the 20 kΩ and 50 kΩ versions. Wiper resistance is a function of the internal switch architecture and is not scaled with the end-to-end resistance.
Which applications typically favor the AD5260BRUZ20 over the AD5260BRUZ50?
Applications requiring lower absolute resistance for higher current handling or lower thermal noise, such as certain gain-setting or offset-trim circuits, may favor the 20 kΩ version. The 50 kΩ version is often chosen when lower power dissipation or higher impedance loading is desired. Selection must be based on the specific circuit requirements and verified against the datasheet.
Are the AD5260BRUZ20 and AD5260BRUZ50 RoHS compliant?
Yes. The "Z" suffix in both part numbers indicates a RoHS-compliant, lead-free package as defined by Analog Devices. Both devices are supplied in a 14-lead TSSOP package that meets RoHS requirements.