Overview
The AD5252BRU100-RL7 is a dual-channel, digitally controlled potentiometer produced by Analog Devices Inc. This device is part of the AD5252 series, which features nonvolatile memory and I2C-compatible serial interface. It is designed to provide precise and flexible control over resistance settings, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | - | - | 8 Bits | - | - |
| Resistor Differential Nonlinearity (R-DNL) | VDD = 5.5 V | -1.00 | ±0.25 | +1.00 | LSB |
| Resistor Nonlinearity (R-INL) | VDD = 5.5 V | -2.0 | ±0.5 | +2.0 | LSB |
| Nominal Resistor Tolerance (ΔRAB/RAB) | TA = 25°C | -20 | - | +20 | % |
| Operating Voltage | - | 2.7 V | - | 5.5 V | V |
| Operating Temperature | - | -40°C | - | +105°C | °C |
| Wiper Resistance (RW) | VDD = 5 V | 75 | - | 130 | Ω |
| Channel-Resistance Matching (ΔRAB1/ΔRAB2) | RAB = 10 kΩ, 50 kΩ, 100 kΩ | - | 0.15% | - | % |
Key Features
- I2C-compatible serial interface for easy communication with the host controller.
- Nonvolatile memory to store wiper settings and user-defined information.
- 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.
- Single supply operation from 2.7 V to 5.5 V and dual supply operation from ±2.25 V to ±2.75 V.
- Operating temperature range from -40°C to +105°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 AD5252BRU100-RL7? The AD5252BRU100-RL7 has a resolution of 8 bits, providing 256 positions.
- What is the operating voltage range of the AD5252BRU100-RL7? The device operates on a single supply from 2.7 V to 5.5 V and dual supply from ±2.25 V to ±2.75 V.
- What is the operating temperature range of the AD5252BRU100-RL7? The operating temperature range is from -40°C to +105°C.
- Does the AD5252BRU100-RL7 support synchronous or asynchronous updates? Yes, it supports both synchronous and asynchronous dual-channel updates.
- What is the purpose of the extra EEMEM in the AD5252BRU100-RL7? The extra EEMEM is for storing user-defined information such as memory data for other components, lookup tables, or system identification information.
- Can the AD5252BRU100-RL7 be used as a mechanical potentiometer replacement? Yes, it can be used as a replacement for mechanical potentiometers.
- What is the wiper resistance of the AD5252BRU100-RL7? The wiper resistance is typically between 75 Ω and 130 Ω at VDD = 5 V.
- Does the AD5252BRU100-RL7 have any specific applications in RF systems? Yes, it can be used for RF base station power amp bias control.
- How many devices can be operated on the same I2C bus using the AD5252BRU100-RL7? Up to 4 devices can be operated using the 2 target address decoding bits.
- What is the data retention period of the AD5252BRU100-RL7? The device has a typical data retention period of 100 years at TA = 55°C.
