Part A
AD5254BRUZ10
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5455 PCS
- Package
- TSSOP-20
- Series
- Acquisition de données - potentiomètres numériques
Replacement verdict
Compatible functional replacement candidate
The AD5254BRUZ10 and AD5254BRU50 are functionally compatible digital potentiometers from the same AD5254 family, sharing identical architecture, interface, package, and channel count. The primary distinction is end-to-end resistance, which directly affects the wiper resistance ratio and current handling in the target circuit. Designers must verify that the 10 kΩ versus 50 kΩ nominal resistance aligns with the application's impedance and loading requirements before substituting one for the other.
End-to-End Resistance
Not compatible
Package Type
High match
Interface Type
High match
Channel Count
High match
Parts at a glance
Part B
AD5254BRU50
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 76 PCS
- Package
- TSSOP-20
- Series
- Acquisition de données - potentiomètres numériques
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5254BRUZ10 | AD5254BRU50 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 10 kΩ | 50 kΩ | Determines the nominal resistance range of the digital potentiometer, directly affecting the voltage divider ratio and current through the wiper for a given application. |
| Number of Positions | 256 | 256 | Defines the resolution of the potentiometer; 256 positions provide 8-bit adjustment granularity for both parts. |
| Number of Channels | 4 | 4 | Indicates how many independent potentiometer channels are integrated in the package, affecting board space and channel count requirements. |
| Interface Type | I²C | I²C | Specifies the digital communication protocol used to control the device, which must match the host controller's available bus. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating voltage window; both parts are compatible with common 3.3 V and 5 V logic systems. |
| Package / Mounting | 14-TSSOP, Surface Mount | 14-TSSOP, Surface Mount | Confirms physical footprint and assembly compatibility, ensuring the parts are drop-in interchangeable on the PCB. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures both devices meet the thermal requirements of industrial and commercial operating environments. |
| Nonvolatile Memory | Yes (EEPROM) | Yes (EEPROM) | Allows the wiper setting to be retained across power cycles, which is critical for applications requiring a known startup state. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5254BRUZ10 | AD5254BRU50 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 4 | 4 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 10k | 50k |
| Interface | I²C | I²C |
| Memory Type | Non-Volatile | Non-Volatile |
| Voltage - Supply | 2.7V ~ 5.5V, ±2.25V ~ 2.75V | 2.7V ~ 5.5V, ±2.25V ~ 2.75V |
| Features | Selectable Address | Selectable Address |
| Tolerance | ±20% | ±20% |
| Temperature Coefficient(Typ) | 650ppm/°C | 650ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What is the primary difference between the AD5254BRUZ10 and the AD5254BRU50?
The primary difference is the end-to-end resistance value of the digital potentiometer. The AD5254BRUZ10 has a 10 kΩ nominal resistance, while the AD5254BRU50 has a 50 kΩ nominal resistance. Both are quad-channel, I2C-compatible, nonvolatile digital potentiometers in a 20-lead TSSOP package.
Are the AD5254BRUZ10 and AD5254BRU50 pin-compatible and package-compatible?
Yes. Both devices are offered in the same 20-lead TSSOP (RU-20) package and share an identical pinout. This allows a direct PCB footprint replacement without layout changes, provided the resistance value is suitable for the target application.
Can the AD5254BRUZ10 and AD5254BRU50 be used interchangeably in a circuit?
They are not electrically interchangeable without design validation. The 10 kΩ and 50 kΩ end-to-end resistances affect the wiper resistance, power dissipation, and the resulting voltage or current in the signal path. Circuit performance must be verified against the specific resistance value required by the design.
What is the resolution and number of channels for both the AD5254BRUZ10 and AD5254BRU50?
Both devices provide four independent digitally controlled potentiometers with 256-position resolution (8 bits). Each channel includes a nonvolatile EEPROM memory that retains the wiper setting after power-down.
What is the operating supply voltage range for the AD5254BRUZ10 and AD5254BRU50?
Both devices operate from a single supply voltage range of 2.7 V to 5.5 V, or from dual supplies of ±2.5 V to ±2.7 V. The digital interface is compatible with I2C bus voltages from 1.8 V to 5.5 V.
Do the AD5254BRUZ10 and AD5254BRU50 have the same temperature coefficient and tolerance?
No. The resistance tolerance and temperature coefficient are specified per resistance value. The AD5254BRUZ10 (10 kΩ) and AD5254BRU50 (50 kΩ) each have their own datasheet specifications for end-to-end resistance tolerance and ratiometric temperature coefficient. Designers must consult the respective datasheet tables for exact values.
Which applications typically favor the AD5254BRUZ10 over the AD5254BRU50?
Applications requiring lower resistance for higher bandwidth, lower thermal noise, or better matching with low-impedance signal sources typically favor the AD5254BRUZ10. The AD5254BRU50 is often preferred for lower power dissipation in high-voltage or low-current signal paths where a higher resistance is acceptable.
Are the AD5254BRUZ10 and AD5254BRU50 RoHS-compliant and lead-free?
Yes. Both the AD5254BRUZ10 and AD5254BRU50 are RoHS-compliant and use a lead-free, halogen-free molding compound. The "Z" suffix in the part number indicates a lead-free, RoHS-compliant package.