Part A
AD5252BRUZ1
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4418 個数
- Package
- TSSOP-14
- Series
- データ取得 - デジタルポテンショメータ
Replacement verdict
Compatible functional replacement candidate
The AD5252BRUZ1 and AD5251BRUZ10 are both dual-channel digital potentiometers from the same AD525x family, sharing a compatible I²C interface, TSSOP-14 footprint, and similar architecture. However, they differ in nominal resistance (1 kΩ vs. 10 kΩ) and resolution (256-position vs. 64-position), which directly affect wiper settings, divider ratios, and end-to-end resistance. The AD5251BRUZ10 can serve as a functional substitute only when the 10 kΩ end-to-end resistance and 64-position resolution are acceptable for the target circuit; otherwise, the AD5252BRUZ1 remains the closer match for designs requiring finer adjustment granularity and lower resistance.
End-to-End Resistance
Validation required
Resolution
Validation required
Interface Type
High match
Package Type
High match
Parts at a glance
Part B
AD5251BRUZ10
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 389 個数
- Package
- TSSOP-14
- Series
- データ取得 - デジタルポテンショメータ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5252BRUZ1 | AD5251BRUZ10 | Why it matters |
|---|---|---|---|
| Number of Positions | 256 | 64 | Determines the resolution of the digital potentiometer; a 256-position device offers finer wiper adjustment than a 64-position device. |
| End-to-End Resistance | 1 kΩ | 10 kΩ | Sets the nominal resistance range of the potentiometer, directly affecting the voltage/current levels in the target circuit. |
| Number of Potentiometers | 2 | 1 | Indicates how many independent variable resistors are integrated in the package, affecting channel count and board space. |
| Interface Type | I²C | Up/Down (3-wire) | Determines the digital control protocol required by the host, which affects firmware and pin compatibility. |
| Wiper Resistance | ~70 Ω (typical) | ~200 Ω (typical) | Lower wiper resistance reduces signal error and improves accuracy in voltage-divider and rheostat configurations. |
| Nonvolatile Memory | Yes (EEPROM) | No | Nonvolatile storage retains the wiper setting across power cycles, which is critical for applications requiring a known startup state. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the compatible system power rails; both parts support common 3 V and 5 V logic supplies. |
| Package | 14-Lead TSSOP | 14-Lead TSSOP | Footprint and pin count must match for a drop-in replacement on an existing PCB layout. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Ensures the device operates reliably across the intended industrial temperature environment. |
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 | AD5252BRUZ1 | AD5251BRUZ10 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 2 | 2 |
| Number of Taps | 256 | 64 |
| Resistance(Ohms) | 1k | 10k |
| 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 | ±30% | ±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 are the key differences between the AD5252BRUZ1 and AD5251BRUZ10?
The AD5252BRUZ1 is a dual-channel, 8-bit digital potentiometer with a 1 kΩ end-to-end resistance, while the AD5251BRUZ10 is a dual-channel, 6-bit digital potentiometer with a 10 kΩ end-to-end resistance. Both are nonvolatile, I²C-compatible devices in 14-lead TSSOP packages, but they differ in resolution, resistance value, and wiper settings count.
Are the AD5252BRUZ1 and AD5251BRUZ10 pin-compatible?
Yes, both devices are offered in the same 14-lead TSSOP (RU-14) package and share the same pinout, allowing them to be used in the same PCB footprint. However, firmware and resistance-dependent circuit behavior must be validated because the resolution and end-to-end resistance differ.
What is the resolution of each device?
The AD5252BRUZ1 provides 8-bit resolution (256 positions) per channel, while the AD5251BRUZ10 provides 6-bit resolution (64 positions) per channel. This affects the step size and the number of programmable wiper settings available in each design.
What are the end-to-end resistance values and tolerances?
The AD5252BRUZ1 has a nominal 1 kΩ end-to-end resistance, and the AD5251BRUZ10 has a nominal 10 kΩ end-to-end resistance. Both are specified with a ±30% resistance tolerance, which is typical for this family of nonvolatile digital potentiometers.
Do both devices support nonvolatile wiper memory?
Yes, both the AD5252BRUZ1 and AD5251BRUZ10 include nonvolatile EEPROM memory that retains the wiper setting after power is removed. This allows the devices to power up in the last programmed wiper position without requiring external microcontroller intervention.
What digital interface do these digital potentiometers use?
Both devices use a 2-wire I²C-compatible serial interface. They support standard and fast I²C modes, and the AD5252BRUZ1 additionally provides an extra address pin option for multiple device configurations on the same bus, while the AD5251BRUZ10 has a fixed address configuration.
Can the AD5251BRUZ10 be used as a drop-in replacement for the AD5252BRUZ1?
No, it is not a direct drop-in replacement. Although the package and pinout are the same, the AD5251BRUZ10 has lower resolution (6-bit vs. 8-bit) and a higher end-to-end resistance (10 kΩ vs. 1 kΩ). Circuit performance, calibration, and firmware must be revalidated before substitution.
What are the typical operating voltage and temperature ranges for these devices?
Both the AD5252BRUZ1 and AD5251BRUZ10 operate from a single 2.7 V to 5.5 V supply and are specified for the industrial temperature range of −40°C to +85°C. These ratings are consistent across the AD5251/AD5252 family.