Overview
The AD5242BR10-REEL7, produced by Analog Devices Inc., is a dual-channel, 256-position, digitally controlled variable resistor (VR) device. This component functions as a digital potentiometer, offering the same electronic adjustment capabilities as a traditional potentiometer, trimmer, or variable resistor. It is part of the AD5241/AD5242 series, which provides a versatile solution for various electronic adjustment needs.
Key Specifications
| Parameter | 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 Preset | Midscale |
| Shutdown Feature | Self-contained shutdown with asynchronous connection of wiper to terminal B and open circuit of terminal A |
| Logic Outputs | Two extra programmable logic outputs |
| Operating Temperature Range | −40°C to +105°C |
| Package Options | 16-lead SOIC, 16-lead TSSOP |
Key Features
- Dual-channel, 256-position digital potentiometer with 1% channel-to-channel matching tolerance.
- Completely programmable resistance between the A terminal and the wiper, or the B terminal and the wiper.
- I²C-compatible, 2-wire serial data interface with readback capability.
- Internal power-on midscale preset and self-contained shutdown feature.
- Two extra programmable logic outputs for driving digital loads, logic gates, LED drivers, and analog switches.
- Extended temperature range of −40°C to +105°C.
Applications
- Multimedia, video, and audio systems.
- Communications equipment.
- Replacement for mechanical potentiometers.
- Instrumentation for gain and offset adjustment.
- Programmable voltage-to-current conversion.
- Line impedance matching.
Q & A
- What is the AD5242BR10-REEL7 used for? The AD5242BR10-REEL7 is used as a digital potentiometer, providing electronic adjustment functions similar to a traditional potentiometer or variable resistor.
- How many positions does the AD5242BR10-REEL7 have? It has 256 positions.
- What are the available resistance values for the AD5242BR10-REEL7? The available resistance values are 10 kΩ, 100 kΩ, and 1 MΩ.
- What is the temperature coefficient of the AD5242BR10-REEL7? The temperature coefficient is 30 ppm/°C.
- What is the supply voltage range for the AD5242BR10-REEL7? It operates from 2.7 V to 5.5 V for single-supply and ±2.7 V for dual-supply.
- What interface does the AD5242BR10-REEL7 use? It uses an I²C-compatible, 2-wire serial data interface.
- What happens to the wiper position at power-on? The wiper position defaults to midscale at system power-on.
- Does the AD5242BR10-REEL7 have a shutdown feature? Yes, it has a self-contained shutdown feature that asynchronously connects the wiper to terminal B and opens the circuit of terminal A.
- What additional outputs does the AD5242BR10-REEL7 provide? It provides two extra programmable logic outputs.
- What is the operating temperature range of the AD5242BR10-REEL7? The operating temperature range is −40°C to +105°C.
