Overview
The AD5252BRUZ100, produced 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, linear increment/decrement commands, and predefined ±6 dB step change commands. The AD5252BRUZ100 is available in various resistance options, including 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ, and operates over an extended industrial temperature range of –40°C to +105°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 256 positions | |
| Resistance Options | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | |
| 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 |
| Data Retention | 100 years (typical at 55°C) | years |
| Interface | I2C compatible serial interface | |
| Package | 14-Lead TSSOP | |
| Bandwidth (1 kΩ version) | 4 MHz | Hz |
Key Features
- Nonvolatile memory stores wiper settings with write protection
- Direct read/write access of RDAC and EEMEM registers
- Predefined linear increment/decrement commands and ±6 dB step change commands
- Synchronous or asynchronous dual-channel update
- Wiper setting readback
- 12 extra bytes in EEMEM for user-defined information
- Resistance tolerance stored in nonvolatile memory
- 2 target address decoding bits allow operation of 4 devices
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 AD5252BRUZ100?
The AD5252BRUZ100 has a resolution of 256 positions.
- What are the available resistance options for the AD5252BRUZ100?
The AD5252BRUZ100 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistance options.
- What is the operating temperature range of the AD5252BRUZ100?
The operating temperature range is –40°C to +105°C.
- What type of interface does the AD5252BRUZ100 use?
The AD5252BRUZ100 uses an I2C compatible serial interface.
- How is the wiper setting stored and retrieved in the AD5252BRUZ100?
The wiper setting is stored in nonvolatile memory (EEMEM) and is automatically restored to the RDAC registers at system power-on or dynamically.
- What are some common applications of the AD5252BRUZ100?
Common applications include mechanical potentiometer replacement, general-purpose DAC replacement, LCD panel VCOM adjustment, white LED brightness adjustment, and more.
- What is the bandwidth of the 1 kΩ version of the AD5252BRUZ100?
The bandwidth of the 1 kΩ version is 4 MHz.
- How many devices can be operated using the target address decoding bits?
The 2 target address decoding bits allow operation of up to 4 devices.
- What is the typical data retention time for the AD5252BRUZ100?
The typical data retention time is 100 years at 55°C.
- What package type is the AD5252BRUZ100 available in?
The AD5252BRUZ100 is available in a 14-Lead TSSOP package.
