Part A
AD5254BRUZ100
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4724 個数
- Package
- TSSOP-20
- 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 AD5254BRUZ100 and AD5253BRU10 are both quad-channel digital potentiometers from Analog Devices with I²C interfaces, offering strong functional overlap. However, differences in resolution, nominal resistance, and package type require careful validation before substitution. The AD5254BRUZ100 provides 8-bit resolution with a 100 kΩ end-to-end resistance in a TSSOP-20 package, while the AD5253BRU10 offers 6-bit resolution with a 10 kΩ resistance in a TSSOP-20 package. Designers must verify that the reduced resolution and different resistance value meet application requirements, particularly in circuits where precise wiper positioning or specific resistance matching is critical.
Resolution
Validation required
End-to-End Resistance
Not compatible
Interface Type
High match
Package Type
High match
Parts at a glance
Part B
AD5253BRU10
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7336 個数
- Package
- TSSOP-20
- 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 | AD5254BRUZ100 | AD5253BRU10 | Why it matters |
|---|---|---|---|
| Number of Resistors / Channels | 4 | 4 | Both are quad-channel devices, so channel count is not a differentiator for substitutability. |
| Number of Positions (Taps) | 256 | 64 | Higher tap count provides finer resistance resolution, which affects precision in adjustment applications. |
| End-to-End Resistance | 100 kΩ | 10 kΩ | The nominal resistance sets the impedance range and must match the circuit's design requirements. |
| Interface Type | I²C | SPI | The digital interface must be compatible with the host controller's available bus. |
| Wiper Resistance | ~75 Ω (typical) | ~75 Ω (typical) | Wiper resistance adds a fixed error term; similar values mean comparable loading effects. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Both support the same logic and analog supply range, easing power-rail compatibility. |
| Nonvolatile Memory (EEPROM) | Yes | Yes | On-chip EEPROM retains the wiper setting across power cycles, important for set-and-forget designs. |
| Package | 20-Lead TSSOP | 20-Lead TSSOP | Identical package and pin count simplify PCB layout and drop-in replacement. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature grades ensure both parts meet the same environmental requirements. |
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 | AD5254BRUZ100 | AD5253BRU10 |
|---|---|---|
| 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 | 64 |
| Resistance(Ohms) | 100k | 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 | ±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 are the key differences between the AD5254BRUZ100 and AD5253BRU10?
The AD5254BRUZ100 is a quad-channel, 100 kΩ digital potentiometer with 256 positions and an I²C interface, while the AD5253BRU10 is a quad-channel, 10 kΩ digital potentiometer with 64 positions and an I²C interface. The primary differences are end-to-end resistance (100 kΩ vs 10 kΩ) and resolution (256 vs 64 positions).
Are the AD5254BRUZ100 and AD5253BRU10 pin-compatible?
Both devices are offered in a 20-lead TSSOP package (RU suffix). However, pin-compatibility cannot be assumed solely from package type; designers must verify the pinout in the respective manufacturer datasheets, as internal function assignments may differ between the 256-position and 64-position variants.
Can the AD5254BRUZ100 be used as a drop-in replacement for the AD5253BRU10?
No. The AD5254BRUZ100 has 256 positions and 100 kΩ end-to-end resistance, whereas the AD5253BRU10 has 64 positions and 10 kΩ. These differences affect wiper resolution, voltage divider ratios, and current handling, so a direct substitution is not possible without redesigning the circuit and validating against the target application requirements.
What is the resolution of each device?
The AD5254BRUZ100 provides 256 programmable positions (8-bit resolution) per channel. The AD5253BRU10 provides 64 programmable positions (6-bit resolution) per channel.
What is the end-to-end resistance of each part?
The AD5254BRUZ100 has a nominal end-to-end resistance of 100 kΩ. The AD5253BRU10 has a nominal end-to-end resistance of 10 kΩ. These values are specified in the respective manufacturer datasheets.
Do both devices use the same digital interface?
Yes. Both the AD5254BRUZ100 and AD5253BRU10 use a 2-wire I²C-compatible serial interface for programming the wiper positions and reading back stored values.
What is the package type for both components?
Both the AD5254BRUZ100 and AD5253BRU10 are available in a 20-lead TSSOP package, indicated by the "RU" suffix in the part number. The "Z" in AD5254BRUZ100 indicates a lead-free/RoHS-compliant version.
How many channels do these digital potentiometers provide?
Both the AD5254BRUZ100 and AD5253BRU10 are quad-channel digital potentiometers, providing four independently programmable resistor channels in a single package.