Part A
AD5254BRUZ100
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4724 Stückzahl
- Package
- TSSOP-20
- Series
- Datenerfassung
Replacement verdict
Compatible functional replacement candidate
The AD5253BRU1-RL7 and AD5254BRUZ100 are both quad-channel digital potentiometers from the same AD525x family, sharing a 100 kΩ end-to-end resistance, I²C interface, and 256-position resolution. However, the AD5253 offers 64 bytes of user EEPROM while the AD5254 provides 256 bytes, and the AD5253 is supplied in a 20-lead TSSOP versus the 14-lead TSSOP of the AD5254. These differences in memory capacity and package footprint require validation before treating the AD5253BRU1-RL7 as a direct drop-in for the AD5254BRUZ100.
End-to-End Resistance
High match
Channel Count
High match
Package Type
Validation required
User EEPROM Size
Validation required
Parts at a glance
Part B
AD5253BRU1-RL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9602 Stückzahl
- Package
- TSSOP-20
- Series
- Datenerfassung
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 | AD5253BRU1-RL7 | Why it matters |
|---|---|---|---|
| Number of Positions | 256 | 64 | Resolution determines the number of adjustable steps; a 256-position device offers finer wiper adjustment than a 64-position device. |
| Number of Potentiometers | 4 | 4 | Both provide four independent channels, so channel count is not a differentiator for this comparison. |
| End-to-End Resistance | 100 kΩ | 10 kΩ | The nominal resistance sets the current and voltage range of the divider; substituting a different value changes circuit behavior. |
| Interface Type | I²C | SPI | The digital control bus must match the host controller; I²C and SPI are not directly interchangeable without protocol changes. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Both operate over the same supply range, so power-supply compatibility is maintained. |
| Nonvolatile Memory | Yes (EEPROM) | Yes (EEPROM) | Nonvolatile storage retains the wiper setting after power loss, which is important for deterministic startup. |
| Package / Mounting | TSSOP-20, Surface Mount | TSSOP-20, Surface Mount | Matching package and mounting style allows the same PCB footprint to be reused. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings ensure both parts are suitable for the same industrial temperature environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5254BRUZ100 | AD5253BRU1-RL7 |
|---|---|---|
| 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 | 1k |
| 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% | ±30% |
| 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 AD5253BRU1-RL7?
The AD5254BRUZ100 is a quad-channel, 100 kΩ digital potentiometer with 256-position resolution and nonvolatile memory, while the AD5253BRU1-RL7 is a quad-channel, 1 kΩ digital potentiometer with 64-position resolution and nonvolatile memory. The primary differences are end-to-end resistance (100 kΩ vs. 1 kΩ) and resolution (256 positions vs. 64 positions).
Are the AD5254BRUZ100 and AD5253BRU1-RL7 pin-compatible?
Both devices are offered in 20-lead TSSOP packages (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.
What is the end-to-end resistance of each device?
The AD5254BRUZ100 has a 100 kΩ end-to-end resistance. The AD5253BRU1-RL7 has a 1 kΩ end-to-end resistance. These values are specified in the respective Analog Devices datasheets.
How many wiper positions does each digital potentiometer provide?
The AD5254BRUZ100 provides 256 wiper positions (8-bit resolution). The AD5253BRU1-RL7 provides 64 wiper positions (6-bit resolution).
Do both devices include nonvolatile memory for wiper settings?
Yes. Both the AD5254BRUZ100 and AD5253BRU1-RL7 include nonvolatile EEPROM memory that retains the wiper setting after power is removed, as specified in their respective Analog Devices datasheets.
What is the supply voltage range for these devices?
Both the AD5254BRUZ100 and AD5253BRU1-RL7 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, per the Analog Devices datasheet specifications.
What communication interface do the AD5254BRUZ100 and AD5253BRU1-RL7 use?
Both devices use a 2-wire I²C-compatible serial interface for programming the wiper position and accessing nonvolatile memory, as documented in the Analog Devices datasheets.
Can the AD5253BRU1-RL7 be used as a drop-in replacement for the AD5254BRUZ100?
No. The two devices differ in end-to-end resistance (1 kΩ vs. 100 kΩ) and resolution (64 vs. 256 positions). A drop-in replacement would require verifying that the different resistance and resolution meet the target circuit's requirements, and confirming pinout and register map compatibility from the manufacturer datasheets.