Overview
The AD5254BRU10-RL7, produced by Analog Devices Inc., is a quad-channel, I2C, nonvolatile memory, digitally controlled potentiometer. This device features 256 positions and is part of the AD5253/AD5254 series. It performs the same electronic adjustment functions as mechanical potentiometers, trimmers, and variable resistors, offering versatile programmability and multiple modes of operation.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 256 positions |
| Resistance Options | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ |
| Nonvolatile Memory | Stores wiper settings with write protection |
| Power-On Refresh Time | 300 μs (typical) |
| EEMEM Rewrite Time | 540 μs (typical) |
| Supply Voltage | Single supply: 2.7 V to 5.5 V, Dual supply: ±2.25 V to ±2.75 V |
| Operating Temperature | –40°C to +105°C |
| Data Retention | 100 years (typical) at T = 55°C |
| Package | 20-Lead TSSOP |
| I2C Interface | I2C-compatible serial interface with 2 slave address-decoding bits |
Key Features
- Quad-channel operation with synchronous or asynchronous channel update
- Read/write access to RDAC and EEMEM registers
- Increment/decrement of resistance and ±6 dB step change commands
- Wiper setting readback and extra EEMEM for user-defined information
- Resistance tolerance stored in nonvolatile memory for precision applications
- 12 extra bytes in EEMEM for user-defined data
Applications
The AD5254BRU10-RL7 is suitable for various applications requiring digital potentiometer functionality, such as audio volume control, white LED brightness adjustment, and other precision adjustment needs in industrial, automotive, and consumer electronics.
Q & A
- What is the resolution of the AD5254BRU10-RL7? The AD5254BRU10-RL7 has a resolution of 256 positions.
- What are the available resistance options for this device? The device is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ options.
- How does the device store wiper settings? The device stores wiper settings in nonvolatile memory with write protection.
- What is the power-on refresh time for the AD5254BRU10-RL7? The power-on refresh time is typically 300 μs.
- What is the operating temperature range of the AD5254BRU10-RL7? The operating temperature range is –40°C to +105°C.
- Does the device support I2C interface? Yes, it supports an I2C-compatible serial interface.
- What is the package type of the AD5254BRU10-RL7? The device is packaged in a 20-Lead TSSOP.
- Can the device store user-defined information? Yes, it has 12 extra bytes in EEMEM for storing user-defined information.
- What are some common applications of the AD5254BRU10-RL7? Common applications include audio volume control, white LED brightness adjustment, and other precision adjustment needs.
- How long does the device retain data? The device retains data for 100 years (typical) at T = 55°C.
