Overview
The AD5243BRM2.5, produced by Analog Devices Inc., is a dual, 256-position digital potentiometer designed to provide a compact and versatile solution for various adjustment applications. This device operates as a 3-terminal mechanical potentiometer, offering high accuracy and stability in variable resistance adjustments. It is part of the AD5243 and AD5248 family, which are known for their low temperature coefficient and low power consumption, making them ideal for portable battery-operated applications.
Key Specifications
| Parameter | Value |
|---|---|
| End-to-end Resistance | 2.5 kΩ |
| Number of Positions | 256 |
| Package Type | 10-lead MSOP (3 mm × 4.9 mm) |
| Power Supply | 2.7 V to 5.5 V |
| Current Consumption | < 6 µA maximum |
| Temperature Coefficient | 35 ppm/°C |
| Operating Temperature Range | −40°C to +125°C |
| Interface | I2C-compatible digital interface |
Key Features
- Compact 10-lead MSOP package (3 mm × 4.9 mm)
- Fast settling time: 5 µs typical on power-up
- Full read/write of wiper register
- Power-on preset to midscale
- Computer software replaces microcontroller in factory programming applications
- Low power consumption: < 6 µA maximum
- Wide operating temperature range: −40°C to +125°C
- Evaluation board available
Applications
- Systems calibrations
- Electronics level settings
- Mechanical trimmers replacement in new designs
- Permanent factory printed circuit board (PCB) setting
- Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
- RF amplifier biasing
- Gain control and offset adjustment
Q & A
- What is the primary function of the AD5243BRM2.5?
The AD5243BRM2.5 functions as a dual, 256-position digital potentiometer, providing electronic adjustment similar to a 3-terminal mechanical potentiometer.
- What are the available end-to-end resistance values for the AD5243/AD5248 series?
The available end-to-end resistance values are 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the power supply range for the AD5243BRM2.5?
The device operates from a 2.7 V to 5.5 V power supply.
- How much current does the AD5243BRM2.5 consume?
The device consumes less than 6 µA maximum.
- What is the temperature coefficient of the AD5243BRM2.5?
The temperature coefficient is 35 ppm/°C.
- What interface does the AD5243BRM2.5 use for control?
The device uses an I2C-compatible digital interface.
- What are some common applications of the AD5243BRM2.5?
Common applications include systems calibrations, electronics level settings, mechanical trimmers replacement, and transducer adjustments.
- Is an evaluation board available for the AD5243BRM2.5?
- Can the AD5243BRM2.5 be used in portable battery-operated applications?
- What is the operating temperature range of the AD5243BRM2.5?
The operating temperature range is −40°C to +125°C.
