Overview
The AD5248BRMZ10, produced by Analog Devices Inc., is a dual, 256-position digital potentiometer that offers a compact and versatile solution for various adjustment applications. This device is part of the AD5243 and AD5248 series, which provide electronic adjustment functions similar to mechanical potentiometers and variable resistors. The AD5248 specifically acts as a 2-terminal variable resistor, making it ideal for high accuracy and stability in variable resistance adjustments.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Positions | 256 |
| End-to-End Resistance | 10 kΩ (for AD5248BRMZ10) |
| Package Type | 10-lead MSOP (3 mm × 4.9 mm) |
| Power Supply Range | 2.7 V to 5.5 V |
| Power Consumption | Less than 6 µA |
| Temperature Coefficient | 35 ppm/°C |
| Operating Temperature Range | −40°C to +125°C |
| Interface | I2C-compatible digital interface |
| Settling Time | 5 µs typical on power-up |
| Address Decode Pins | AD0 and AD1 (for multiple package decoding) |
Key Features
- 2-channel, 256-position digital potentiometer
- Compact 10-lead MSOP package
- Fast settling time of 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 decoding
- Computer software for factory programming, replacing the need for external I2C controllers
- Low power consumption: less than 6 µA
- Low temperature coefficient: 35 ppm/°C
- Wide operating temperature range: −40°C to +125°C
Applications
- Systems calibrations
- Electronics level settings
- Mechanical trimmers replacement in new designs
- Permanent factory printed circuit board (PCB) settings
- 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 AD5248BRMZ10?
The AD5248BRMZ10 functions as a 2-terminal variable resistor, providing 256-position digital adjustment.
- 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 AD5248BRMZ10?
The power supply range is from 2.7 V to 5.5 V.
- How much power does the AD5248BRMZ10 consume?
The device consumes less than 6 µA.
- What is the temperature coefficient of the AD5248BRMZ10?
The temperature coefficient is 35 ppm/°C.
- What interface does the AD5248BRMZ10 use for control?
The device uses an I2C-compatible digital interface.
- What is the settling time of the AD5248BRMZ10 on power-up?
The settling time is 5 µs typical on power-up.
- Does the AD5248BRMZ10 have address decode pins?
Yes, it has extra package address decode pins (AD0 and AD1) for multiple part decoding.
- What software support is available for factory programming?
Analog Devices offers computer software that replaces the need for external I2C controllers for factory programming.
- What are some common applications of the AD5248BRMZ10?
Common applications include systems calibrations, electronics level settings, mechanical trimmers replacement, and transducer adjustments.
