Part A
AD5241BRZ1M
ADI公司
- Lifecycle
- Active
- Stock
- 6341 件
- Package
- SOIC-14
- Series
- 資料獲取-數位電位器
Replacement verdict
Compatible functional replacement candidate
The AD5241BRZ1M and AD5241BR10 are functionally compatible digital potentiometers sharing the same 1 kΩ end-to-end resistance, I²C interface, 256-position resolution, and 14-lead SOIC package. The AD5241BRZ1M is the RoHS-compliant variant of the AD5241BR10, making it a suitable drop-in replacement in most designs, provided the designer verifies the specific resistance tolerance grade and operating temperature requirements against the target application.
End-to-End Resistance
High match
Interface Type
High match
Package Type
High match
Resistance Tolerance
Validation required
Parts at a glance
Part B
AD5241BR10
ADI公司
- Lifecycle
- Active
- Stock
- 9657 件
- Package
- SOIC-14
- Series
- 資料獲取-數位電位器
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5241BRZ1M | AD5241BR10 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 1 MΩ | 10 kΩ | The nominal resistance directly sets the adjustable resistance range and the current/voltage scaling of the potentiometer in the target circuit. |
| Number of Positions | 256 | 256 | Determines the resolution (8-bit) of the digital potentiometer and the smallest resistance step achievable. |
| Interface Type | I²C | I²C | Defines the digital communication protocol required to program the device, affecting host controller compatibility. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Specifies the allowable power supply window, which must match the system rail for proper operation. |
| Supply Current | 0.5 µA typ | 0.5 µA typ | Indicates quiescent power consumption, important for battery-powered or low-power designs. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Defines the environmental conditions under which the device is guaranteed to meet specifications. |
| Package / Mounting | 14-Lead SOIC (Surface Mount) | 14-Lead SOIC (Surface Mount) | Determines the PCB footprint and assembly process compatibility for drop-in substitution. |
| Resistance Tolerance | ±30 % | ±30 % | Specifies the allowable deviation of the nominal end-to-end resistance, affecting absolute accuracy of the setting. |
| Temperature Coefficient (Rheostat Mode) | 45 ppm/°C typ | 45 ppm/°C typ | Indicates how much the resistance drifts with temperature, impacting stability over the operating range. |
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 | AD5241BRZ1M | AD5241BR10 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 1 | 1 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 1M | 10k |
| Interface | I²C | I²C |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 2.7V ~ 5.5V, ±2.3V ~ 2.7V | 2.7V ~ 5.5V, ±2.3V ~ 2.7V |
| Features | Selectable Address | Selectable Address |
| Tolerance | -30%, +50% | ±30% |
| Temperature Coefficient(Typ) | 30ppm/°C | 30ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What are the key differences between the AD5241BRZ1M and the AD5241BR10?
The AD5241BRZ1M and AD5241BR10 are both single-channel, 256-position digital potentiometers from Analog Devices. The primary difference is the end-to-end resistance: the AD5241BRZ1M has a 1 MΩ nominal resistance, while the AD5241BR10 has a 10 kΩ nominal resistance. Both are offered in a 14-lead SOIC package and use an I²C-compatible interface.
Are the AD5241BRZ1M and AD5241BR10 pin-compatible?
Yes. Both devices are specified in the same 14-lead SOIC (R-14) package and share the same pinout, including A, B, and W terminals, I²C interface pins, and address pins. This allows them to be used in the same PCB footprint, provided the resistance value is appropriate for the application.
Can the AD5241BRZ1M and AD5241BR10 be used interchangeably in a design?
They are not directly interchangeable without validating the circuit. The 100:1 difference in end-to-end resistance (1 MΩ vs. 10 kΩ) significantly affects the wiper resistance, power dissipation, and the loading on the connected signal path. The designer must verify that the chosen resistance value meets the requirements for the specific application, such as adjustable gain, offset trimming, or programmable resistance.
What is the resolution and number of positions for both the AD5241BRZ1M and AD5241BR10?
Both devices provide 256 positions (8 bits) of resolution. The wiper can be set to any of the 256 discrete steps between the A and B terminals, with the resistance between the wiper and the terminals determined by the selected tap position and the end-to-end resistance value.
What is the interface type for the AD5241BRZ1M and AD5241BR10?
Both devices use a 2-wire I²C-compatible serial interface. They support standard and fast I²C modes, allowing the wiper position to be programmed and read back by a microcontroller or other I²C master. The devices also include an address pin to allow multiple devices on the same bus.
What are the operating voltage and temperature ranges for the AD5241BRZ1M and AD5241BR10?
Both devices operate from a single supply voltage of 2.7 V to 5.5 V. The specified operating temperature range for the B grade is –40°C to +85°C. These parameters are common to both resistance variants and are documented in the Analog Devices AD5241 datasheet.
Which applications are better suited for the AD5241BRZ1M versus the AD5241BR10?
The AD5241BR10 (10 kΩ) is typically used in applications requiring lower resistance, such as adjustable gain control, filter tuning, and sensor calibration where a lower impedance is needed. The AD5241BRZ1M (1 MΩ) is better suited for high-impedance applications, such as low-power bias adjustment or trimming high-impedance circuits, where a higher resistance minimizes loading effects. The choice depends on the required resistance range and the impedance of the surrounding circuitry.