Overview
The AD5242BR10, produced by Analog Devices Inc., is a dual-channel, 256-position, digitally controlled variable resistor (VR) device. This component functions similarly to a potentiometer, trimmer, or variable resistor, offering a completely programmable resistance value between the A terminal and the wiper, or the B terminal and the wiper. The device is part of the AD5241/AD5242 series and is designed for precision and versatility in various electronic applications.
Key Specifications
| Specification | Value |
|---|---|
| Number of Positions | 256 |
| Resistance Values | 10 kΩ, 100 kΩ, 1 MΩ |
| Temperature Coefficient | 30 ppm/°C |
| Supply Voltage | Single-supply: 2.7 V to 5.5 V, Dual-supply: ±2.7 V |
| Interface | I²C-compatible, 2-wire serial data interface |
| Power-On Default | Midscale preset |
| Logic Outputs | Two extra programmable logic outputs |
| Shutdown Feature | Self-contained shutdown feature |
| Temperature Range | −40°C to +105°C |
| Package Options | 14-lead SOIC, 16-lead SOIC, 14-lead TSSOP, 16-lead TSSOP |
Key Features
- 256-position digital potentiometer with precise resistance control.
- Available in 10 kΩ, 100 kΩ, and 1 MΩ resistance values with 1% channel-to-channel matching tolerance.
- Low temperature coefficient of 30 ppm/°C.
- Single-supply operation from 2.7 V to 5.5 V or dual-supply operation from ±2.7 V.
- I²C-compatible interface with readback capability.
- Internal power-on midscale preset for the wiper position.
- Two extra programmable logic outputs for driving digital loads, logic gates, LED drivers, and analog switches.
- Self-contained shutdown feature.
- Extended temperature range of −40°C to +105°C.
Applications
- Multimedia, video, and audio systems.
- Communications equipment.
- Mechanical potentiometer replacement.
- Instrumentation for gain and offset adjustment.
- Programmable voltage-to-current conversion.
- Line impedance matching.
Q & A
- What is the AD5242BR10 used for?
The AD5242BR10 is used as a digitally controlled variable resistor, similar to a potentiometer, trimmer, or variable resistor, in various electronic applications.
- What are the available resistance values for the AD5242BR10?
The AD5242BR10 is available in 10 kΩ, 100 kΩ, and 1 MΩ resistance values.
- What is the temperature coefficient of the AD5242BR10?
The temperature coefficient of the AD5242BR10 is 30 ppm/°C.
- What is the operating voltage range for the AD5242BR10?
The AD5242BR10 operates on a single-supply from 2.7 V to 5.5 V or a dual-supply from ±2.7 V.
- What interface does the AD5242BR10 use?
The AD5242BR10 uses an I²C-compatible, 2-wire serial data interface.
- What is the default wiper position at power-on?
The wiper position defaults to midscale at system power-on.
- Does the AD5242BR10 have programmable logic outputs?
Yes, the AD5242BR10 has two extra programmable logic outputs.
- What is the temperature range for the AD5242BR10?
The AD5242BR10 operates over an extended temperature range of −40°C to +105°C.
- In what packages is the AD5242BR10 available?
The AD5242BR10 is available in 14-lead SOIC, 16-lead SOIC, 14-lead TSSOP, and 16-lead TSSOP packages.
- What are some common applications of the AD5242BR10?
Common applications include multimedia, video, and audio systems, communications equipment, mechanical potentiometer replacement, instrumentation, and programmable voltage-to-current conversion.
