Part A
AD5254BRUZ100
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4724 PCS
- Package
- TSSOP-20
- Series
- Acquisition de données - potentiomètres numériques
Replacement verdict
Compatible functional replacement candidate
The AD5254BRUZ100 and AD5253BRUZ100 are functionally compatible digital potentiometers sharing identical resistance values, package types, and interface protocols, with the primary distinction being channel count. The AD5254BRUZ100 offers four channels while the AD5253BRUZ100 provides two channels, making the AD5254BRUZ100 a viable higher-density alternative where board space permits and additional channels are acceptable or beneficial.
Channel Count
Validation required
Resistance Value
High match
Package Type
High match
Interface Protocol
High match
Parts at a glance
Part B
AD5253BRUZ100
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5303 PCS
- Package
- TSSOP-20
- Series
- Acquisition de données - potentiomètres numériques
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 | AD5253BRUZ100 | Why it matters |
|---|---|---|---|
| Number of Positions | 256 | 64 | Determines the resolution of resistance adjustment; a 256-position device offers finer wiper granularity than a 64-position device. |
| Number of Resistor Channels | 4 | 4 | Indicates how many independent digitally controlled resistors are integrated in the package. |
| End-to-End Resistance | 100 kΩ | 100 kΩ | Sets the nominal full-scale resistance value used in divider and rheostat configurations. |
| Wiper Resistance | 200 Ω typical | 200 Ω typical | Adds series error to the programmed resistance and affects accuracy in low-resistance settings. |
| Interface Type | I²C | I²C | Defines the digital communication protocol required for controlling the device. |
| Nonvolatile Memory | EEPROM | EEPROM | Allows the wiper setting to be retained across power cycles without reprogramming. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Determines compatibility with the system logic and analog supply rails. |
| Package | 20-Lead TSSOP | 20-Lead TSSOP | Affects PCB footprint, assembly, and thermal characteristics. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Specifies the environmental range over which the device is guaranteed to operate. |
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 | AD5253BRUZ100 |
|---|---|---|
| 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 | 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 are the key differences between the AD5254BRUZ100 and AD5253BRUZ100?
The AD5254BRUZ100 is a quad-channel, 256-position digital potentiometer, while the AD5253BRUZ100 is a quad-channel, 64-position digital potentiometer. Both are 100 kΩ devices in a 20-lead TSSOP package and share the same I²C interface and nonvolatile memory architecture, but the AD5254 offers four times the resolution (256 positions vs. 64 positions) and therefore a finer wiper step size.
Are the AD5254BRUZ100 and AD5253BRUZ100 pin-compatible?
Yes. Both devices are offered in the same 20-lead TSSOP (RU-20) package and share an identical pinout, including the I²C bus pins, address pins, and the four resistor terminals (A, B, and W) per channel. This allows a common PCB footprint, though firmware and resolution requirements must be evaluated before substitution.
What is the end-to-end resistance of the AD5254BRUZ100 and AD5253BRUZ100?
Both the AD5254BRUZ100 and AD5253BRUZ100 are 100 kΩ end-to-end resistance variants, as indicated by the "100" suffix in the part number. The AD5254 and AD5253 families also offer 1 kΩ, 10 kΩ, and 50 kΩ options in other orderable part numbers.
How many wiper positions does each device provide?
The AD5254BRUZ100 provides 256 positions per channel (8-bit resolution), while the AD5253BRUZ100 provides 64 positions per channel (6-bit resolution). This difference affects the achievable wiper step size and the granularity of resistance adjustment in the target application.
Do both devices support nonvolatile wiper memory?
Yes. Both the AD5254 and AD5253 families include nonvolatile EEPROM memory that stores the wiper setting, allowing the last programmed position to be restored on power-up without requiring host intervention. This is a shared feature across both part numbers.
What digital interface do the AD5254BRUZ100 and AD5253BRUZ100 use?
Both devices use a 2-wire I²C-compatible serial interface. The AD5254 supports standard and fast I²C modes, and both devices include address pins that allow multiple devices to be placed on the same bus. The interface is identical between the two parts, so the same host controller code structure can be adapted, though register maps and resolution differ.
Can the AD5253BRUZ100 be used as a drop-in replacement for the AD5254BRUZ100?
Not as a direct drop-in replacement. Although the package and pinout are identical, the AD5253BRUZ100 has only 64 wiper positions versus 256 on the AD5254BRUZ100. Firmware that assumes 8-bit resolution, specific register addresses, or particular wiper step sizes may not function correctly. The substitution must be validated against the respective datasheets and the system requirements.
What is the operating temperature range for these devices?
Both the AD5254BRUZ100 and AD5253BRUZ100 are specified for the industrial temperature range of −40°C to +85°C, consistent with the "B" grade designation in the orderable part number. This is a shared specification across the two parts.