Overview
The AD5282BRUZ50 is a dual-channel, 256-position, digitally controlled variable resistor (VR) produced by Analog Devices Inc. This device performs the same electronic adjustment function as a potentiometer, trimmer, or variable resistor. It is designed to offer a completely programmable value of resistance between the A terminal and the wiper or the B terminal and the wiper. The AD5282 is available in a 16-lead TSSOP package and operates over an extended industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Number of Positions | 256 | |
| Fixed Terminal Resistance | 20 kΩ, 50 kΩ, 200 kΩ | |
| Channel-to-Channel Matching Tolerance | 1% | |
| Temperature Coefficient | 30 ppm/°C | |
| Operating Temperature Range | −40°C to +85°C | |
| Supply Voltage Range | +10 V to +15 V (single supply), ±5.5 V (dual supply) | V |
| Interface | I2C-compatible, 2-wire serial data interface | |
| Package Type | 16-lead TSSOP | |
| Power-on Wiper Position | Midscale preset | |
| Shutdown Current | 5 μA | |
| Logic Supply Current | 60 μA (VLOGIC = 5 V) |
Key Features
- Completely programmable resistance between A terminal and wiper or B terminal and wiper.
- Programmable reset and sleep mode programmability, offering an alternative to costly EEPROM solutions.
- Additional programmable logic outputs to drive digital loads, logic gates, LED drivers, and analog switches.
- Low temperature coefficient of 30 ppm/°C.
- I2C-compatible, 2-wire serial data interface for wiper position programming.
Applications
- Multimedia, video, and audio.
- Communications.
- Mechanical potentiometer replacement.
- Instrumentation: gain and offset adjustment.
- Programmable voltage source and programmable current source.
- Line impedance matching.
Q & A
- What is the AD5282BRUZ50 used for? The AD5282BRUZ50 is used as a digitally controlled variable resistor, replacing mechanical potentiometers, trimmers, or variable resistors in various applications such as multimedia, communications, and instrumentation.
- How many channels does the AD5282BRUZ50 have? The AD5282BRUZ50 has two channels.
- What is the number of positions for the AD5282BRUZ50? The AD5282BRUZ50 has 256 positions.
- What are the fixed terminal resistance options for the AD5282BRUZ50? The fixed terminal resistance options are 20 kΩ, 50 kΩ, and 200 kΩ.
- What is the operating temperature range of the AD5282BRUZ50? The operating temperature range is −40°C to +85°C.
- What interface does the AD5282BRUZ50 use for programming? The AD5282BRUZ50 uses an I2C-compatible, 2-wire serial data interface.
- What is the default wiper position at power-on for the AD5282BRUZ50? The wiper position defaults to midscale at system power-on.
- Can the AD5282BRUZ50 operate in sleep mode? Yes, the AD5282BRUZ50 features sleep mode programmability.
- What additional outputs does the AD5282BRUZ50 have? The AD5282BRUZ50 has additional programmable logic outputs to drive digital loads, logic gates, LED drivers, and analog switches.
- What is the package type of the AD5282BRUZ50? The AD5282BRUZ50 is available in a 16-lead TSSOP package.
