Overview
The AD5282BRUZ200 is a dual-channel, 256-position, digitally controlled variable resistor (VR) produced by Analog Devices Inc. This component functions as a digital potentiometer, offering the same electronic adjustment capabilities as a traditional potentiometer, trimmer, or variable resistor. It features an I2C-compatible interface, making it versatile for various applications requiring precise resistance adjustments.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | - | - | - | +15 V | V |
| Dual-Supply Operation | VDD/VSS | - | - | - | ±5.5 V | V |
| Fixed Terminal Resistance | RAB | - | 20 kΩ, 50 kΩ, 200 kΩ | - | - | Ω |
| Temperature Coefficient | - | - | - | 30 ppm/°C | - | ppm/°C |
| Operating Temperature | TA | - | -40°C | - | +85°C | °C |
| Positive Supply Current | IDD | VIH = 5 V or VIL = 0 V | 0.1 μA | - | 1 μA | μA |
| Power Dissipation | PDISS | VIH = 5 V or VIL = 0 V, VDD = +5 V, VSS = −5 V | 0.2 mW | - | 0.3 mW | mW |
| Bandwidth (-3 dB) | BW | RAB = 20 kΩ, Code = 0x80 | - | - | 310 kHz | kHz |
Key Features
- I2C-compatible interface for easy communication and control.
- Dual-channel configuration with 256 positions each, allowing for precise resistance adjustments.
- Fixed terminal resistance options of 20 kΩ, 50 kΩ, and 200 kΩ with a 1% channel-to-channel matching tolerance.
- Low temperature coefficient of 30 ppm/°C, ensuring stable performance over a wide temperature range.
- Power-on midscale preset and programmable reset capabilities.
- Additional programmable logic outputs to drive digital loads, logic gates, LED drivers, and analog switches.
Applications
- Multimedia, video, and audio systems for gain and offset adjustments.
- Communications equipment for impedance matching and voltage/current source adjustments.
- Mechanical potentiometer replacement in various industrial and consumer electronics.
- Instrumentation for precise gain and offset adjustments.
- Programmable voltage and current sources.
Q & A
- What is the AD5282BRUZ200?
The AD5282BRUZ200 is a dual-channel, 256-position, digitally controlled variable resistor produced by Analog Devices Inc. - What is the supply voltage range for the AD5282BRUZ200?
The component can operate with a single supply voltage of up to +15 V or dual-supply operation of ±5.5 V. - What are the available fixed terminal resistance values?
The fixed terminal resistance values are 20 kΩ, 50 kΩ, and 200 kΩ. - What is the temperature coefficient of the AD5282BRUZ200?
The temperature coefficient is 30 ppm/°C. - What is the operating temperature range of the AD5282BRUZ200?
The operating temperature range is from -40°C to +85°C. - Does the AD5282BRUZ200 have programmable logic outputs?
Yes, it has additional programmable logic outputs to drive digital loads, logic gates, LED drivers, and analog switches. - What interface does the AD5282BRUZ200 use for communication?
The component uses an I2C-compatible interface. - What are some common applications of the AD5282BRUZ200?
Common applications include multimedia, video, and audio systems, communications equipment, mechanical potentiometer replacement, instrumentation, and programmable voltage and current sources. - How many positions does each channel of the AD5282BRUZ200 have?
Each channel has 256 positions. - What is the power dissipation of the AD5282BRUZ200?
The power dissipation is typically 0.2 to 0.3 mW under specified conditions.
