Overview
The AD5248BRMZ50, produced by Analog Devices Inc., is a dual, 256-position digital potentiometer that offers a compact solution for various adjustment applications. This device is part of the AD5248 series, which performs the same adjustment function as a 2-terminal variable resistor. It is designed to provide high accuracy and stability in variable resistance adjustments, making it ideal for a wide range of applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| End-to-end Resistance | 50 kΩ | kΩ |
| Number of Positions | 256 | - |
| Package Type | 10-lead MSOP (3 mm × 4.9 mm) | - |
| Power Supply Range | 2.7 V to 5.5 V | V |
| Supply Current (IDD) | 6 µA maximum | µA |
| Operating Temperature | −40°C to +125°C | °C |
| Temperature Coefficient | 35 ppm/°C | ppm/°C |
| Interface | I2C-compatible, 2-wire bus | - |
| Settling Time (tS) | 5 µs typical on power-up | µs |
Key Features
- 2-channel, 256-position digital potentiometer
- 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
- Extra package address decode pins (AD0 and AD1) for multiple part addressing on the same I2C bus
- Computer software for factory programming, replacing the need for external microcontrollers
- Low power consumption: IDD = 6 µA maximum
- Low temperature coefficient: 35 ppm/°C
- Wide operating temperature range: −40°C to +125°C
- Evaluation board available
Applications
- Systems calibrations
- Electronics level settings
- Replacement of mechanical trimmers in new designs
- Permanent factory printed circuit board (PCB) settings
- Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
- RF amplifier biasing
- Gain control and offset adjustment
Q & A
- What is the primary function of the AD5248BRMZ50?
The AD5248BRMZ50 functions as a 2-terminal variable resistor, providing 256-position digital potentiometer adjustments.
- What are the available end-to-end resistance values for the AD5248 series?
The AD5248 series is available in four end-to-end resistance values: 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the power supply range for the AD5248BRMZ50?
The device operates from a 2.7 V to 5.5 V power supply.
- What is the typical settling time for the AD5248BRMZ50 on power-up?
The typical settling time is 5 µs on power-up.
- Does the AD5248BRMZ50 support multiple part addressing on the same I2C bus?
- What is the maximum supply current (IDD) for the AD5248BRMZ50?
The maximum supply current is 6 µA.
- What is the operating temperature range for the AD5248BRMZ50?
The device operates from −40°C to +125°C.
- Is an evaluation board available for the AD5248BRMZ50?
- What are some common applications of the AD5248BRMZ50?
- How does the AD5248BRMZ50 help in factory programming?
The device can be programmed using computer software, which replaces the need for external microcontrollers in factory programming applications.
