Overview
The AD5241BRU100, produced by Analog Devices Inc., is a single-channel, 256-position, digitally controlled variable resistor (VR) device. This component performs the same electronic adjustment function as a potentiometer, trimmer, or variable resistor. It is designed to operate with a fixed A-to-B terminal resistance of 100 kΩ and features a low temperature coefficient of 30 ppm/°C. The device is suitable for various applications requiring precise and programmable resistance adjustments.
Key Specifications
| Parameter | Symbol | Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|---|
| Resolution | N | 8 Bits | ||||
| Resistor Differential Nonlinearity | R-DNL | RWB, VA = no connect | -1 | ±0.4 | +1 | LSB |
| Resistor Integral Nonlinearity | R-INL | RWB, VA = no connect | -2 | ±0.5 | +2 | LSB |
| Nominal Resistor Tolerance | ΔRAB/RAB | TA = 25°C, RAB = 100 kΩ | -30 | +50 | % | |
| Resistance Temperature Coefficient | (ΔRAB/RAB)/ΔT | VAB = VDD, wiper = no connect | 30 | ppm/°C | ||
| Operating Temperature Range | TA | -40°C | +105°C | |||
| Supply Voltage | VDD | 2.7 V | 5.5 V | |||
| Dual Supply Voltage | VDD/VSS | ±2.7 V |
Key Features
- Single-channel, 256-position digitally controlled variable resistor (VR) device.
- Fixed A-to-B terminal resistance of 100 kΩ with 1% channel-to-channel matching tolerance.
- Low temperature coefficient: 30 ppm/°C.
- Internal power-on midscale preset.
- Single-supply operation from 2.7 V to 5.5 V or dual-supply operation from ±2.7 V.
- I2C-compatible, 2-wire serial data interface with readback capability.
- Two extra programmable logic outputs for driving digital loads, logic gates, LED drivers, and analog switches.
- Self-contained shutdown feature.
- Available in surface-mount, 14-lead SOIC and 16-lead SOIC packages, and 14-lead TSSOP and 16-lead TSSOP packages.
Applications
- Multimedia, video, and audio equipment.
- Communications.
- Mechanical potentiometer replacement.
- Instrumentation: gain, offset adjustment.
- Programmable voltage-to-current conversion.
- Line impedance matching.
- Cell phones and household appliances.
- Modern office equipment and industrial control systems.
- Medical equipment and power supplies.
Q & A
- What is the primary function of the AD5241BRU100?
The AD5241BRU100 is a single-channel, 256-position, digitally controlled variable resistor (VR) device that performs the same electronic adjustment function as a potentiometer, trimmer, or variable resistor.
- What are the available resistance values for the AD5241BRU100?
The AD5241BRU100 has a fixed A-to-B terminal resistance of 100 kΩ.
- What is the temperature coefficient of the AD5241BRU100?
The nominal temperature coefficient of the AD5241BRU100 is 30 ppm/°C.
- What is the operating temperature range of the AD5241BRU100?
The AD5241BRU100 operates over an extended temperature range of −40°C to +105°C.
- What type of interface does the AD5241BRU100 use for programming?
The AD5241BRU100 uses an I2C-compatible, 2-wire serial data interface with readback capability.
- Does the AD5241BRU100 have any additional programmable outputs?
Yes, the AD5241BRU100 has two extra programmable logic outputs available for driving digital loads, logic gates, LED drivers, and analog switches.
- What are the available package options for the AD5241BRU100?
The AD5241BRU100 is available in surface-mount, 14-lead SOIC and 16-lead SOIC packages, and 14-lead TSSOP and 16-lead TSSOP packages.
- Can the AD5241BRU100 be used in battery-powered applications?
Yes, the AD5241BRU100 supports single-supply operation from 2.7 V to 5.5 V, making it suitable for battery-powered applications.
- What is the default wiper position at system power-on?
The wiper position defaults to midscale at system power-on.
- Does the AD5241BRU100 have a self-contained shutdown feature?
Yes, the AD5241BRU100 has a self-contained shutdown feature.
