Part A
AD5252BRUZ1
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4418 個数
- Package
- TSSOP-14
- Series
- データ取得 - デジタルポテンショメータ
Replacement verdict
Not a drop-in replacement
The AD5252BRUZ1 and AD5253BRU10 are not functionally interchangeable. The AD5252BRUZ1 is a dual-channel 256-position digital potentiometer, while the AD5253BRU10 is a quad-channel 64-position device. They differ in channel count, resolution, nominal resistance, and internal memory architecture, so direct substitution is not possible without circuit redesign.
Different channel count
Different resolution
Different end-to-end resistance
Different memory architecture
Parts at a glance
Part B
AD5253BRU10
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7336 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 | AD5252BRUZ1 | AD5253BRU10 | 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 | 2 | 4 | Affects how many independent resistance settings can be controlled within a single package, impacting board space and circuit complexity. |
| End-to-End Resistance | 1 kΩ | 10 kΩ | Sets the nominal resistance range of the digital potentiometer, directly influencing the achievable voltage division and current levels in the application. |
| Interface Type | I²C | SPI | Determines the communication protocol required by the host controller, affecting pin count, wiring, and firmware compatibility. |
| Wiper Resistance | 60 Ω typical | 60 Ω typical | Adds a fixed series resistance at the wiper terminal, which can affect accuracy in low-resistance settings. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating voltage window, ensuring compatibility with the system's logic and analog supply rails. |
| Nonvolatile Memory | Yes (EEPROM) | Yes (EEPROM) | Allows the wiper setting to be retained after power loss, eliminating the need for reinitialization on every power-up. |
| Package Type | 14-Lead TSSOP | 20-Lead TSSOP | Impacts PCB footprint and layout; a larger package may be required for the higher channel count of the AD5253. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Ensures reliable operation across the intended environmental conditions of the end application. |
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 | AD5252BRUZ1 | AD5253BRU10 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 2 | 4 |
| Number of Taps | 256 | 64 |
| Resistance(Ohms) | 1k | 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 | ±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 are the key differences between the AD5252BRUZ1 and AD5253BRU10 digital potentiometers?
The AD5252BRUZ1 is a dual-channel, 8-bit digital potentiometer with a 1 kΩ end-to-end resistance, while the AD5253BRU10 is a quad-channel, 8-bit digital potentiometer with a 10 kΩ end-to-end resistance. The AD5252 offers two independently programmable channels, whereas the AD5253 provides four channels. Both use an I²C-compatible interface and are available in TSSOP packages, but the AD5253's higher channel count and different resistance value suit different circuit requirements.
Are the AD5252BRUZ1 and AD5253BRU10 pin-compatible?
No. The AD5252BRUZ1 is a dual-channel device in a 14-lead TSSOP, while the AD5253BRU10 is a quad-channel device in a 20-lead TSSOP. The pin counts and pin functions differ, so they are not drop-in replacements for each other.
What is the resolution of each device?
Both the AD5252BRUZ1 and AD5253BRU10 are 8-bit digital potentiometers, providing 256 positions (0 to 255) per channel. This resolution is identical across both parts.
What are the end-to-end resistance values and tolerances?
The AD5252BRUZ1 has a nominal end-to-end resistance of 1 kΩ, while the AD5253BRU10 has a nominal end-to-end resistance of 10 kΩ. Both devices typically offer ±20% resistance tolerance, as specified in the Analog Devices datasheets. The resistance value directly affects the wiper current and the voltage divider ratio in the target application.
What digital interface do these digital potentiometers use?
Both the AD5252BRUZ1 and AD5253BRU10 use a 2-wire I²C-compatible serial interface. They support standard and fast I²C modes, allowing direct connection to most microcontrollers and digital signal processors. The interface is used to set the wiper position and to read back the stored value.
Can the AD5252BRUZ1 and AD5253BRU10 operate from the same supply voltage?
Yes. Both devices operate from a single 2.7 V to 5.5 V supply, as specified in their respective datasheets. This makes them compatible with common 3.3 V and 5 V logic systems. However, the digital input logic thresholds and the analog signal range must still be verified for the specific supply voltage used.
What are the typical applications for each device?
The AD5252BRUZ1 (dual-channel, 1 kΩ) is often used for low-resistance trimming, such as in gain control, offset adjustment, and feedback networks where a low resistance value is required. The AD5253BRU10 (quad-channel, 10 kΩ) is suited for multi-channel applications such as programmable filters, sensor calibration, and audio volume control where four independent channels and a higher resistance are beneficial.
Do these devices have nonvolatile memory for wiper settings?
Yes. Both the AD5252BRUZ1 and AD5253BRU10 include nonvolatile EEPROM memory that stores the wiper setting. This allows the device to retain the last programmed wiper position after power cycling, eliminating the need for reinitialization by the host controller. The EEPROM endurance and data retention specifications are provided in the Analog Devices datasheets.