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 AD5253BRUZ1 and AD5254BRUZ100 share the same quad-channel digital potentiometer architecture, I2C interface, TSSOP-20 footprint, and 256-position resolution, making the AD5253BRUZ1 a viable functional substitute for the AD5254BRUZ100 in most non-volatile memory-dependent applications. The primary distinction is the absence of EEMEM in the AD5253, which requires firmware validation for designs relying on stored wiper settings at power-up.
Channel Count
High match
Interface Type
High match
Package Type
High match
Non-Volatile Memory
Validation required
Parts at a glance
Part B
AD5253BRUZ1
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5016 個数
- Package
- TSSOP-20
- 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 | AD5253BRUZ1 | 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 Channels | 4 | 4 | Indicates how many independent potentiometer channels are integrated in the package, affecting board space and channel count requirements. |
| End-to-End Resistance | 100 kΩ | 1 kΩ | Sets the nominal full-scale resistance of the potentiometer, which directly affects the current and voltage range in the target circuit. |
| Interface Type | I²C | I²C | Defines the digital communication protocol used to control the device, affecting compatibility with the host controller. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Specifies the allowable power supply range, which must match the system rail to ensure proper operation. |
| Wiper Resistance | ~200 Ω | ~200 Ω | Represents the on-resistance of the internal switch at the wiper, influencing accuracy and loading effects in the signal path. |
| Nonvolatile Memory | Yes (EEPROM) | Yes (EEPROM) | Determines whether the wiper setting is retained after power loss, which is critical for applications requiring a known startup state. |
| Package Type | TSSOP-20 | TSSOP-20 | Defines the physical footprint and pinout, which must match the PCB layout for direct substitution. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Specifies the environmental conditions under which the device is guaranteed to operate reliably. |
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 | AD5253BRUZ1 |
|---|---|---|
| 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 AD5253BRUZ1?
The AD5254BRUZ100 is a quad-channel, 100 kΩ digital potentiometer with 256 positions per channel, while the AD5253BRUZ1 is a quad-channel, 1 kΩ digital potentiometer with 64 positions per channel. Both are nonvolatile, I2C-compatible devices in 20-lead TSSOP packages, but they differ in end-to-end resistance and resolution.
Are the AD5254BRUZ100 and AD5253BRUZ1 pin-compatible?
Yes. Both devices are offered in the same 20-lead TSSOP (RU-20) package and share the same pinout, allowing them to be used in the same PCB footprint. However, the different resistance values and resolution must be accounted for in the circuit design.
What is the resolution of each device?
The AD5254BRUZ100 provides 256 positions (8-bit resolution) per channel. The AD5253BRUZ1 provides 64 positions (6-bit resolution) per channel.
What are the end-to-end resistance values of these digital potentiometers?
The AD5254BRUZ100 has a nominal end-to-end resistance of 100 kΩ. The AD5253BRUZ1 has a nominal end-to-end resistance of 1 kΩ. Both are available in other resistance options, but these specific part numbers denote 100 kΩ and 1 kΩ respectively.
Do both devices support nonvolatile memory storage of the wiper setting?
Yes. Both the AD5254 and AD5253 are nonvolatile digital potentiometers that retain the wiper setting after power-down without requiring external memory or a backup supply.
What digital interface do the AD5254BRUZ100 and AD5253BRUZ1 use?
Both devices use a 2-wire I2C-compatible serial interface. They support standard and fast I2C modes, and multiple devices can be addressed on the same bus via programmable slave addresses.
Can the AD5253BRUZ1 be used as a direct drop-in replacement for the AD5254BRUZ100?
No. Although they are pin-compatible, the AD5253BRUZ1 has a 1 kΩ end-to-end resistance and 64 positions, while the AD5254BRUZ100 has 100 kΩ and 256 positions. A direct substitution would change the circuit's resistance range and resolution, so the design must be revalidated against the target application requirements.
What are the typical operating voltage ranges for these devices?
Both the AD5254BRUZ100 and AD5253BRUZ1 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.