Overview
The AD5252BRU10, manufactured by Analog Devices Inc., is a dual-channel, I2C, nonvolatile memory, digitally controlled potentiometer. This device features 256 positions and is designed to perform the same electronic adjustment functions as mechanical potentiometers, trimmers, and variable resistors. It offers versatile programmability, including read/write access to RDAC and EEMEM registers, and supports various modes of operation such as linear increment/decrement and ±6 dB step changes. The AD5252BRU10 is particularly useful in applications requiring precise digital control over resistance settings.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 256 positions | |
| Resistance Range | 10 kΩ (for AD5252BRU10) | Ω |
| Supply Voltage (Single Supply) | 2.7 V to 5.5 V | V |
| Supply Voltage (Dual Supply) | ±2.25 V to ±2.75 V | V |
| Operating Temperature | –40°C to +105°C | °C |
| Power-On Refresh Time | 300 µs (typ) | µs |
| EEMEM Rewrite Time | 540 µs (typ) | µs |
| Bandwidth (1 kΩ version) | 4 MHz | MHz |
| Data Retention | 100 years (typ at TA = 55°C) | years |
| Package | 14-TSSOP |
Key Features
- Dual-channel, I2C, nonvolatile memory, digitally controlled potentiometer with 256 positions
- Nonvolatile memory stores wiper setting with write protection
- Power-on refreshed with EEMEM settings in 300 µs (typ)
- 12 extra bytes in EEMEM for user-defined information
- I2C compatible serial interface with direct read/write access to RDAC and EEMEM registers
- Predefined linear increment/decrement commands and ±6 dB step change commands
- Synchronous or asynchronous dual-channel update
- Wiper setting readback
Applications
- Mechanical potentiometer replacement
- General-purpose DAC replacement
- LCD panel VCOM adjustment
- White LED brightness adjustment
- RF base station power amp bias control
- Programmable gain and offset control
- Programmable voltage-to-current conversion
- Programmable power supply
- Sensor calibrations
Q & A
- What is the resolution of the AD5252BRU10?
The AD5252BRU10 has a resolution of 256 positions.
- What are the available resistance ranges for the AD5252?
The AD5252 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistance ranges. The AD5252BRU10 specifically is 10 kΩ.
- What is the operating temperature range of the AD5252BRU10?
The operating temperature range is –40°C to +105°C.
- How long does it take for the AD5252BRU10 to refresh its settings on power-on?
The power-on refresh time is typically 300 µs.
- What is the bandwidth of the 1 kΩ version of the AD5252?
The bandwidth of the 1 kΩ version is 4 MHz.
- How much data retention can be expected from the AD5252BRU10?
The AD5252BRU10 has a typical data retention of 100 years at TA = 55°C.
- What package type is the AD5252BRU10 available in?
The AD5252BRU10 is available in a 14-TSSOP package.
- Can the AD5252BRU10 store user-defined information?
Yes, the AD5252BRU10 has 12 extra bytes in EEMEM for storing user-defined information.
- What communication interface does the AD5252BRU10 use?
The AD5252BRU10 uses an I2C compatible serial interface.
- Can the AD5252BRU10 perform synchronous or asynchronous updates?
Yes, the AD5252BRU10 supports both synchronous and asynchronous dual-channel updates.
