Overview
The AD5252BRU10-RL7, produced by Analog Devices Inc., is a dual-channel, I2C, nonvolatile memory, digitally controlled potentiometer. This device is part of the AD5251/AD5252 series and offers 256 positions for precise resistance adjustment. It is designed to replace mechanical potentiometers, trimmers, and variable resistors, providing electronic adjustment functions with high precision and reliability.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Resolution | N | - | - | - | 8 Bits | - |
| Resistor Differential Nonlinearity | R-DNL | RWB, RWA = NC, VDD = 5.5 V | -1.00 | ±0.25 | +1.00 | LSB |
| Resistor Nonlinearity | R-INL | RWB, RWA = NC, VDD = 5.5 V | -2.0 | ±0.5 | +2.0 | LSB |
| Zero-Scale Error | VWZSE | Code = zero scale | 0 | 1.2 | 3.0 | LSB |
| Supply Voltage | VDD | - | 2.7 | - | 5.5 | V |
| Operating Temperature | TA | - | -40 | - | +105 | °C |
| Input Logic High | VIH | VDD = 5 V, VSS = 0 V | - | - | 2.4 | V |
| Input Logic Low | VIL | VDD = 5 V, VSS = 0 V | 0.8 | - | - | V |
Key Features
- I2C compatible serial interface for easy communication with host controllers.
- 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 capability.
- Wiper setting readback feature.
- Extra EEMEM for storing user-defined information, such as memory data for other components or system identification.
- Single supply operation from 2.7 V to 5.5 V and dual supply operation from ±2.25 V to ±2.75 V.
- High data retention of 100 years at 55°C.
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-RL7? The AD5252BRU10-RL7 has a resolution of 8 bits, providing 256 positions for resistance adjustment.
- What is the operating temperature range of the AD5252BRU10-RL7? The operating temperature range is from -40°C to +105°C.
- What are the supply voltage options for the AD5252BRU10-RL7? The device can operate on a single supply from 2.7 V to 5.5 V or on a dual supply from ±2.25 V to ±2.75 V.
- Does the AD5252BRU10-RL7 support I2C communication? Yes, it has an I2C compatible serial interface.
- What is the data retention period of the AD5252BRU10-RL7? The device has a typical data retention period of 100 years at 55°C.
- Can the AD5252BRU10-RL7 store user-defined information? Yes, it has extra EEMEM for storing user-defined information.
- What are some common applications of the AD5252BRU10-RL7? Common applications include mechanical potentiometer replacement, LCD panel VCOM adjustment, and programmable gain and offset control.
- Does the AD5252BRU10-RL7 support synchronous or asynchronous updates? Yes, it supports both synchronous and asynchronous dual-channel updates.
- What is the wiper resistance of the AD5252BRU10-RL7? The wiper resistance is typically between 75 Ω and 130 Ω at VDD = 5 V.
- How many devices can be addressed using the AD5252BRU10-RL7? Up to 4 devices can be addressed using the 2 target address decoding bits.
