Part A
AD5254BRUZ10
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5455 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 AD5254BRUZ10 and AD5254BRU100 are functionally compatible digital potentiometers from the same AD5254 family, sharing identical architecture, interface, and package. The primary distinction is end-to-end resistance, which directly affects the application's current and voltage divider characteristics. Designers must verify that the resistance value aligns with their circuit requirements before substituting.
End-to-End Resistance
Not compatible
Package Type
High match
Interface Type
High match
Resolution
High match
Parts at a glance
Part B
AD5254BRU100
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2832 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 | AD5254BRUZ10 | AD5254BRU100 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 10 kΩ | 100 kΩ | Determines the nominal resistance of the digital potentiometer and directly affects the current through and voltage across the device in the target circuit; a 10x difference makes them non-interchangeable without redesign. |
| Number of Positions | 256 | 256 | Defines the wiper resolution (8-bit) and thus the step size achievable in resistance adjustment; identical resolution means the same control granularity. |
| Number of Channels | 4 | 4 | Indicates how many independent potentiometer channels are integrated in one package; matching channel count preserves board layout and control architecture. |
| Interface Type | I²C | I²C | Specifies the digital communication protocol used to set the wiper position; identical I²C interface allows the same host controller and firmware to drive either part. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the allowable power supply window; matching ranges ensure compatibility with the same system rails and logic levels. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Specifies the ambient temperature range over which the device is guaranteed to operate; identical ratings mean both suit the same environmental conditions. |
| Package / Mounting | 14-Lead TSSOP, Surface Mount | 14-Lead TSSOP, Surface Mount | Determines the physical footprint and assembly process; identical package and mounting allow drop-in PCB compatibility. |
| Nonvolatile Memory (EEPROM) | Yes | Yes | Indicates whether the wiper setting is retained after power loss; both having EEPROM means both preserve their last programmed position without external storage. |
| Wiper Resistance (Typical) | 75 Ω | 75 Ω | Represents the residual on-resistance of the internal switch at the wiper; identical typical values mean similar error contribution at the ends of the resistance range. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5254BRUZ10 | AD5254BRU100 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 4 | 4 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 10k | 100k |
| 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 main difference between the AD5254BRUZ10 and AD5254BRU100?
The primary difference is the end-to-end resistance value of the digital potentiometer. The AD5254BRUZ10 has a 10 kΩ nominal resistance, while the AD5254BRU100 has a 100 kΩ nominal resistance. Both are quad-channel, 256-position, I²C-compatible digital potentiometers from Analog Devices in a 20-lead TSSOP package.
Are the AD5254BRUZ10 and AD5254BRU100 pin-compatible?
Yes. Both devices are offered in the same 20-lead TSSOP (RU-20) package and share the same pinout. This allows them to be used interchangeably on the same PCB layout, provided the resistance value is appropriate for the application.
Do the AD5254BRUZ10 and AD5254BRU100 have the same number of positions and channels?
Yes. Both are quad-channel digital potentiometers with 256 positions per channel, providing 8-bit resolution for each channel. The channel count and resolution are identical between the two variants.
What is the difference in end-to-end resistance tolerance between the AD5254BRUZ10 and AD5254BRU100?
Both variants are specified with a nominal resistance tolerance of ±20% over the operating temperature range, as stated in the Analog Devices AD5254 datasheet. The absolute resistance value differs (10 kΩ vs. 100 kΩ), but the tolerance specification is the same for both.
Can the AD5254BRUZ10 and AD5254BRU100 be used in the same I²C bus configuration?
Yes. Both devices use the same I²C-compatible serial interface and support the same addressing scheme via the AD0 and AD1 pins. The interface timing, supply voltage range (2.7 V to 5.5 V), and register map are identical between the two variants.
Which variant should be selected for a low-power or high-impedance circuit?
The AD5254BRU100 (100 kΩ) is generally more suitable for low-power or high-impedance signal paths because its higher resistance reduces current flow for a given voltage. The AD5254BRUZ10 (10 kΩ) is better suited for lower-impedance circuits where a lower resistance is required. Selection should be based on the specific circuit requirements and verified against the datasheet.
Are the AD5254BRUZ10 and AD5254BRU100 RoHS compliant?
Yes. Both the AD5254BRUZ10 and AD5254BRU100 are RoHS-compliant parts, as indicated by the "Z" suffix in the ordering code. The "Z" designation confirms lead-free and RoHS-compliant construction per Analog Devices ordering guidelines.
Do both variants support the same operating temperature range?
Yes. Both the AD5254BRUZ10 and AD5254BRU100 are specified for the industrial temperature range of −40°C to +105°C, as documented in the Analog Devices AD5254 datasheet.