Part A
AD5254BRUZ100
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4724 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 AD5254BRUZ100 and AD5252BRU100 are both quad-channel and dual-channel digital potentiometers from Analog Devices, respectively, sharing the same TSSOP-14 footprint, I²C interface, and non-volatile memory architecture. While the AD5254 offers four channels versus the AD5252's two, the core electrical characteristics and package compatibility make the AD5254BRUZ100 a viable functional replacement candidate for the AD5252BRU100 in applications where additional channels can be accommodated or left unused. Designers should verify channel count requirements and address pin configuration before substitution.
Channel Count
High match
Package Type
High match
Interface Type
High match
Resistance Tolerance
Validation required
Parts at a glance
Part B
AD5252BRU100
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5129 個数
- Package
- TSSOP-14
- 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 | AD5254BRUZ100 | AD5252BRU100 | Why it matters |
|---|---|---|---|
| Number of Resistor Channels | 4 | 2 | Determines how many independent potentiometer channels are available; a 4-channel part cannot be substituted where 2 channels are required without leaving unused pins, and vice versa. |
| End-to-End Resistance | 100 kΩ | 100 kΩ | Sets the nominal resistance range of the digital potentiometer, directly affecting the voltage/current divider ratios in the application circuit. |
| Resolution (Number of Taps) | 256 positions (8-bit) | 256 positions (8-bit) | Defines the wiper adjustment granularity; matching resolution ensures equivalent step size and control precision. |
| Interface Type | I²C (2-wire) | I²C (2-wire) | The digital control bus must match the host controller; identical I²C interfaces allow drop-in firmware and hardware compatibility. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Determines compatibility with the system power rail; matching ranges ensure the device operates correctly in the same supply environment. |
| Nonvolatile Memory (EEPROM) | Yes (stores wiper setting) | Yes (stores wiper setting) | Nonvolatile storage retains the wiper position across power cycles, which is essential for applications requiring a known startup state. |
| Package / Pin Count | 20-lead TSSOP | 14-lead TSSOP | Footprint and pin count must match the PCB layout; different packages require board redesign and cannot be directly substituted. |
| Operating Temperature Range | −40 °C to +85 °C | −40 °C to +85 °C | Ensures the device meets the thermal requirements of the target application environment. |
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 | AD5252BRU100 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 4 | 2 |
| Number of Taps | 256 | 256 |
| 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 AD5252BRU100?
The AD5254BRUZ100 is a quad-channel, 100 kΩ, 256-position digital potentiometer with an I²C interface, while the AD5252BRU100 is a dual-channel, 100 kΩ, 256-position digital potentiometer with the same I²C interface. The primary difference is channel count: the AD5254 provides four independent potentiometers, whereas the AD5252 provides two.
Are the AD5254BRUZ100 and AD5252BRU100 pin-compatible?
No. The AD5254BRUZ100 is offered in a 20-lead TSSOP package, and the AD5252BRU100 is offered in a 14-lead TSSOP package. The different package sizes and pin counts mean they are not pin-compatible and cannot be used as drop-in replacements without PCB redesign.
Do both devices have the same end-to-end resistance and resolution?
Yes. Both the AD5254BRUZ100 and AD5252BRU100 have a nominal end-to-end resistance of 100 kΩ and provide 256-position resolution (8-bit) per channel.
What supply voltage range do the AD5254BRUZ100 and AD5252BRU100 support?
Both devices operate from a single supply of 2.7 V to 5.5 V, or from dual supplies of ±2.5 V to ±2.7 V, as specified in the Analog Devices datasheets.
Can the AD5252BRU100 be used as a substitute for the AD5254BRUZ100 in an existing design?
No, not directly. The AD5252BRU100 has only two channels versus four channels on the AD5254BRUZ100, and it comes in a smaller 14-lead package. Substitution would require verifying channel count requirements, PCB layout changes, and firmware adjustments for the different number of internal registers.
What is the I²C interface speed of the AD5254BRUZ100 and AD5252BRU100?
Both devices support I²C-compatible serial interfaces with a maximum clock frequency of 400 kHz, as stated in their respective Analog Devices datasheets.
Do both devices offer nonvolatile memory for wiper settings?
Yes. Both the AD5254BRUZ100 and AD5252BRU100 include nonvolatile EEPROM memory that stores the wiper settings, allowing the devices to retain their last programmed positions after power cycling.
What are the operating temperature ranges for these digital potentiometers?
Both the AD5254BRUZ100 and AD5252BRU100 are specified for the industrial temperature range of −40°C to +105°C, per the Analog Devices datasheets.