Overview
The AD5252BRUZ100-RL7, 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 operates within a single supply range of 2.7 V to 5.5 V or a dual supply range of ±2.25 V to ±2.75 V, and is guaranteed to operate over an extended industrial temperature range of –40°C to +105°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Number of Positions | 256 | |
| Nominal Resistor Values | 100 kΩ | Ω |
| Interface | I²C | |
| Memory Type | Non-Volatile | |
| Operating Temperature Range | –40°C to +105°C | °C |
| Resistance Tolerance (max) | 20% | % |
| Temperature Coefficient (typ) | 650 ppm/°C | ppm/°C |
| Supply Voltage Range | 2.7 V to 5.5 V, ±2.25 V to ±2.75 V | V |
| Package | 14-Lead TSSOP | |
| Bandwidth (typ) | 4 MHz | Hz |
Key Features
- I²C compatible serial interface with 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 and wiper setting readback.
- Resistance tolerance stored in nonvolatile memory and 12 extra bytes in EEMEM for user-defined information.
- 100-year typical data retention at TA = 55°C.
- Selectable address decoding allowing operation of up to 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 AD5252BRUZ100-RL7 used for?
The AD5252BRUZ100-RL7 is used as a dual-channel, digitally controlled potentiometer, replacing mechanical potentiometers, trimmers, and variable resistors in various applications.
- What is the resolution of the AD5252BRUZ100-RL7?
The AD5252BRUZ100-RL7 has a resolution of 256 positions.
- What are the nominal resistor values available for the AD5252?
The AD5252 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ nominal resistor values.
- What is the operating temperature range of the AD5252BRUZ100-RL7?
The operating temperature range is –40°C to +105°C.
- What type of memory does the AD5252BRUZ100-RL7 use?
The AD5252BRUZ100-RL7 uses nonvolatile memory.
- What is the interface type of the AD5252BRUZ100-RL7?
The interface is I²C compatible.
- What is the typical bandwidth of the AD5252BRUZ100-RL7?
The typical bandwidth is 4 MHz for the 1 kΩ version.
- How many extra bytes are available in the EEMEM for user-defined information?
There are 12 extra bytes available in the EEMEM for user-defined information.
- What is the typical data retention time of the AD5252BRUZ100-RL7?
The typical data retention time is 100 years at TA = 55°C.
- Can multiple AD5252 devices be operated on the same bus?
