Part A
AD5252BRUZ1
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4418 PCS
- Package
- TSSOP-14
- Series
- Acquisição de dados - Potenciômetros Digitais
Replacement verdict
Compatible functional replacement candidate
The AD5252BRUZ1 and AD5252BRU100 are functionally compatible digital potentiometers from the same AD5252 family, sharing identical architecture, interface, and performance characteristics. The primary distinction is the end-to-end resistance value, which directly affects the voltage divider ratio and current handling in the target application. Designers must verify that the resistance value of the substitute aligns with the circuit's requirements before committing to a drop-in replacement.
End-to-End Resistance
Not compatible
Interface Type
High match
Package Type
High match
Resolution
High match
Parts at a glance
Part B
AD5252BRU100
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5129 PCS
- Package
- TSSOP-14
- Series
- Acquisição de dados - Potenciômetros Digitais
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 | AD5252BRU100 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 1 kΩ | 100 kΩ | Determines the nominal resistance range of the digital potentiometer and directly affects the current and voltage levels in the target circuit; a 100x difference makes these parts non-interchangeable in most designs. |
| Number of Positions | 256 | 256 | Defines the wiper resolution; identical resolution means the same number of programmable steps is available in both parts. |
| Number of Channels | 2 | 2 | Indicates how many independent potentiometer channels are integrated; matching channel count supports equivalent multi-channel circuit topologies. |
| Interface Type | I2C | I2C | Determines the digital communication protocol required by the host controller; identical I2C interface allows the same firmware and bus wiring to be reused. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Specifies the allowable power supply window; matching ranges ensure both parts operate under the same system power rails. |
| Package / Mounting | 14-TSSOP, Surface Mount | 14-TSSOP, Surface Mount | Defines the physical footprint and assembly process; identical packages allow drop-in PCB compatibility. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Sets the environmental limits for reliable operation; matching ranges ensure both parts suit the same application environments. |
| Nonvolatile Memory | Yes (EEPROM) | Yes (EEPROM) | Indicates whether the wiper setting is retained after power loss; both parts preserving settings supports identical power-up behavior. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5252BRUZ1 | AD5252BRU100 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 2 | 2 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 1k | 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 | ±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 is the primary difference between the AD5252BRUZ1 and the AD5252BRU100?
The primary difference is the end-to-end resistance value of the digital potentiometer. The AD5252BRUZ1 provides a 1 kΩ nominal resistance, while the AD5252BRU100 provides a 100 kΩ nominal resistance. Both are dual-channel, 256-position, I²C-compatible digital potentiometers from Analog Devices in a 14-lead TSSOP package.
Are the AD5252BRUZ1 and AD5252BRU100 pin-compatible and package-compatible?
Yes. Both devices are offered in the same 14-lead TSSOP (RU-14) package and share the same pinout. This allows a common PCB footprint, but the different end-to-end resistance values must be validated against the target circuit requirements before substitution.
Do the AD5252BRUZ1 and AD5252BRU100 have the same number of positions and interface type?
Yes. Both are 256-position digital potentiometers with an I²C-compatible serial interface. They also share the same dual-channel architecture, nonvolatile EEPROM wiper memory, and nominal operating voltage range as specified in the Analog Devices AD5252 datasheet.
Can the AD5252BRUZ1 and AD5252BRU100 be used interchangeably in a voltage divider configuration?
Not directly without circuit analysis. In a voltage divider configuration, the output depends on the ratio of the wiper resistance to the end-to-end resistance. Because the AD5252BRUZ1 is 1 kΩ and the AD5252BRU100 is 100 kΩ, the absolute wiper resistance and the resulting divider loading effects differ significantly, so the design must be re-evaluated.
How does the end-to-end resistance affect power dissipation in the AD5252BRUZ1 versus the AD5252BRU100?
For a given applied voltage across the potentiometer terminals, the lower resistance AD5252BRUZ1 (1 kΩ) will dissipate more power than the higher resistance AD5252BRU100 (100 kΩ), following P = V²/R. The designer must verify that the power dissipation remains within the package and device ratings from the Analog Devices datasheet.
Are the AD5252BRUZ1 and AD5252BRU100 both nonvolatile digital potentiometers?
Yes. Both devices include nonvolatile EEPROM memory that stores the wiper setting, allowing the wiper position to be restored after power cycling. This is a shared feature of the AD5252 family as documented by Analog Devices.
What are the common applications for the AD5252BRUZ1 and AD5252BRU100?
Both devices are used for digital volume control, gain adjustment, offset trimming, and programmable voltage division. The AD5252BRUZ1 (1 kΩ) is typically chosen for lower-impedance signal paths, while the AD5252BRU100 (100 kΩ) is typically chosen for higher-impedance or lower-power signal paths, subject to the specific circuit requirements.
Do the AD5252BRUZ1 and AD5252BRU100 share the same operating temperature range and supply voltage range?
Yes. Both devices are specified for the same industrial temperature range and supply voltage range as defined in the Analog Devices AD5252 datasheet. The difference between the two part numbers is the end-to-end resistance value, not the operating conditions.