Overview
The AD5242BRZ100, produced by Analog Devices Inc., is a dual-channel, 256-position, digitally controlled variable resistor (VR) device. It functions as a digital potentiometer, trimmer, or variable resistor, offering a completely programmable value of resistance between the A terminal and the wiper, or the B terminal and the wiper. This device is part of the AD5241/AD5242 series, which provides high precision and versatility in various electronic applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Positions | 256 | - |
| Fixed A-to-B Terminal Resistance | 10 kΩ, 100 kΩ, 1 MΩ | - |
| Channel-to-Channel Matching Tolerance | 1% | - |
| Temperature Coefficient | 30 ppm/°C | - |
| Power Supply Range | Single-supply: 2.7 V to 5.5 V, Dual-supply: ±2.7 V | V |
| Operating Temperature Range | −40°C to +105°C | °C |
| Interface | I2C-compatible, 2-wire serial data interface | - |
| Package Types | 16-lead SOIC, 16-lead TSSOP | - |
Key Features
- 256-position digital potentiometer with high resolution
- Fixed A-to-B terminal resistance options: 10 kΩ, 100 kΩ, 1 MΩ
- Low temperature coefficient: 30 ppm/°C
- Internal power on midscale preset
- Single-supply (2.7 V to 5.5 V) or dual-supply (±2.7 V) operation
- I2C-compatible interface with readback capability
- Extra programmable logic outputs for driving digital loads, logic gates, LED drivers, and analog switches
- Self-contained shutdown feature
- Extended temperature range: −40°C to +105°C
Applications
- Multimedia, video, and audio systems
- Communications equipment
- Mechanical potentiometer replacement
- Instrumentation: gain and offset adjustment
- Programmable voltage-to-current conversion
- Line impedance matching
Q & A
- What is the AD5242BRZ100 used for?
The AD5242BRZ100 is used as a digital potentiometer, trimmer, or variable resistor in various electronic applications, including multimedia, communications, instrumentation, and more.
- What are the available resistance values for the AD5242BRZ100?
The AD5242BRZ100 is available with fixed A-to-B terminal resistances of 10 kΩ, 100 kΩ, or 1 MΩ.
- What is the temperature coefficient of the AD5242BRZ100?
The nominal temperature coefficient of the AD5242BRZ100 is 30 ppm/°C.
- What is the operating temperature range of the AD5242BRZ100?
The AD5242BRZ100 operates over an extended temperature range of −40°C to +105°C.
- What type of interface does the AD5242BRZ100 use?
The AD5242BRZ100 uses an I2C-compatible, 2-wire serial data interface.
- Does the AD5242BRZ100 have programmable logic outputs?
Yes, the AD5242BRZ100 has two extra programmable logic outputs available.
- What is the default wiper position at power-on for the AD5242BRZ100?
The wiper position defaults to midscale at system power on.
- What are the package options for the AD5242BRZ100?
The AD5242BRZ100 is available in 16-lead SOIC and 16-lead TSSOP packages.
- Can the AD5242BRZ100 be used in dual-supply configurations?
Yes, the AD5242BRZ100 can operate in dual-supply configurations (±2.7 V) for ac or bipolar operation.
- Does the AD5242BRZ100 have a self-contained shutdown feature?
Yes, the AD5242BRZ100 has a self-contained shutdown feature.
