Part A
AD5254BRUZ100
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4724 PCS
- Package
- TSSOP-20
- Series
- Data Acquisition - Digital Potentiometers
Replacement verdict
Compatible functional replacement candidate
The AD5252BRU10 and AD5254BRUZ100 are both dual-channel and quad-channel digital potentiometers from the same AD525x family, sharing identical 10 kΩ end-to-end resistance, I²C interface, and TSSOP-14/16 footprint compatibility. However, the AD5254BRUZ100 offers 256-position resolution and nonvolatile memory, while the AD5252BRU10 provides 1024-position resolution with volatile memory only. Designers must validate wiper resolution, memory retention requirements, and channel count before substituting.
Channel Count
Validation required
End-to-End Resistance
High match
Resolution
Not compatible
Memory Type
Validation required
Parts at a glance
Part B
AD5252BRU10
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8930 PCS
- Package
- TSSOP-14
- Series
- Data Acquisition - Digital Potentiometers
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 | AD5252BRU10 | Why it matters |
|---|---|---|---|
| Number of Resistor Channels | 4 | 2 | Determines how many independent resistance elements can be controlled; a 4-channel part cannot be substituted where 2 independent channels are required, and vice versa. |
| End-to-End Resistance | 100 kΩ | 10 kΩ | Sets the nominal resistance range of the digital potentiometer, directly affecting the voltage/current scaling in the target circuit. |
| Resolution (Number of Taps) | 256 positions (8-bit) | 256 positions (8-bit) | Defines the step granularity of resistance adjustment; matching resolution ensures equivalent wiper positioning accuracy. |
| Interface Type | I²C (2-wire) | I²C (2-wire) | Determines the digital communication protocol required by the host controller; identical interfaces simplify drop-in replacement. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Must match the system power rail; compatible ranges allow operation in the same supply environment. |
| Nonvolatile Memory (EEPROM) | Yes | Yes | Retains wiper setting after power loss, eliminating the need for re-initialization by the host system. |
| Package Type | TSSOP-20 | TSSOP-14 | Footprint and pin count must match the PCB layout; different packages require board redesign. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures the device operates reliably within the application's thermal environment. |
| Wiper Resistance (Typical) | ~75 Ω | ~75 Ω | Adds a fixed series error to the programmed resistance; similar values preserve circuit accuracy. |
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 | AD5252BRU10 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 4 | 2 |
| Number of Taps | 256 | 256 |
| 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 AD5252BRU10?
The AD5254BRUZ100 is a quad-channel, 100 kΩ digital potentiometer with 256-position resolution and nonvolatile memory, while the AD5252BRU10 is a dual-channel, 10 kΩ digital potentiometer with 256-position resolution and nonvolatile memory. The AD5254 offers four independent channels, whereas the AD5252 provides two channels. Both are I²C-compatible and come in 14-lead TSSOP packages, but the AD5254BRUZ100 is specified for a 100 kΩ end-to-end resistance and the AD5252BRU10 for 10 kΩ.
Are the AD5254BRUZ100 and AD5252BRU10 pin-compatible?
No, they are not pin-compatible. The AD5254BRUZ100 is a quad-channel device in a 14-lead TSSOP, while the AD5252BRU10 is a dual-channel device also in a 14-lead TSSOP, but the pin functions differ because the AD5254 uses additional pins for the extra channels and corresponding terminal connections. Always consult the respective datasheets for exact pinout before layout.
Can the AD5252BRU10 be used as a drop-in replacement for the AD5254BRUZ100?
No. The AD5252BRU10 has only two channels and a 10 kΩ resistance, whereas the AD5254BRUZ100 has four channels and a 100 kΩ resistance. A drop-in replacement would require matching channel count, resistance value, pinout, and control interface. Since these differ, the AD5252BRU10 cannot directly replace the AD5254BRUZ100 without circuit redesign.
What is the resolution of each digital potentiometer?
Both the AD5254BRUZ100 and AD5252BRU10 offer 256-position resolution (8-bit). This means each channel can be set to one of 256 discrete wiper positions between the A and B terminals.
Do both devices have nonvolatile memory for wiper settings?
Yes. Both the AD5254BRUZ100 and AD5252BRU10 include nonvolatile EEPROM memory that retains the wiper setting after power-down, allowing the device to power up in the previously stored position. This is a key feature for applications requiring persistent settings without a microcontroller.
What is the supply voltage range for these digital potentiometers?
Both the AD5254BRUZ100 and AD5252BRU10 operate from a single supply voltage of 2.7 V to 5.5 V, or from dual supplies of ±2.5 V to ±2.7 V. This wide operating range makes them suitable for both 3 V and 5 V systems.
What is the typical application difference between the AD5254BRUZ100 and AD5252BRU10?
The AD5254BRUZ100, with four 100 kΩ channels, is typically used in applications requiring multiple high-resistance adjustments, such as quad-channel gain control, offset trimming, or programmable filters. The AD5252BRU10, with two 10 kΩ channels, is often used in dual-channel applications like stereo audio volume control or dual-channel sensor calibration where lower resistance is preferred.
What is the operating temperature range for these devices?
Both the AD5254BRUZ100 and AD5252BRU10 are specified for the industrial temperature range of −40°C to +105°C. This makes them suitable for industrial and automotive applications requiring robust thermal performance.