Overview
The AD5280BRUZ200, produced by Analog Devices Inc., is a single-channel, 256-position, digitally controlled variable resistor (VR) or digital potentiometer. This device performs the same electronic adjustment function as a traditional potentiometer, trimmer, or variable resistor. It features a completely programmable value of resistance between the A terminal and the wiper or the B terminal and the wiper, with fixed A-to-B terminal resistances of 20 kΩ, 50 kΩ, or 200 kΩ. The AD5280BRUZ200 operates within an extended industrial temperature range of −40°C to +85°C and is available in a 14-lead TSSOP package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Positions | 256 | - |
| Terminal Resistance | 200 kΩ (for AD5280BRUZ200) | Ω |
| Temperature Coefficient | 30 ppm/°C | ppm/°C |
| Operating Temperature | −40°C to +85°C | °C |
| Supply Voltage | +15 V or ±5 V | V |
| Interface | I2C-compatible, 2-wire serial data interface | - |
| Package Type | 14-lead TSSOP | - |
| Bandwidth (−3 dB) | 35 kHz (for 200 kΩ) | kHz |
| Settling Time | 5 μs (±1 LSB error band) | μs |
Key Features
- Completely programmable resistance between A and wiper or B and wiper terminals.
- Additional programmable logic outputs to drive digital loads, logic gates, LED drivers, and analog switches.
- I2C-compatible, 2-wire serial data interface for wiper position programming.
- Power-on midscale preset and programmable reset.
- Sleep mode programmability to achieve desired preset levels without an EEPROM.
- Low power dissipation with CMOS logic level inputs.
Applications
- Multimedia, video, and audio systems.
- Communications equipment.
- Mechanical potentiometer replacement.
- Instrumentation: gain and offset adjustment.
- Programmable voltage and current sources.
- Line impedance matching.
Q & A
- What is the AD5280BRUZ200 used for?
The AD5280BRUZ200 is used as a digitally controlled variable resistor or digital potentiometer, replacing traditional potentiometers, trimmers, or variable resistors in various applications.
- What are the available terminal resistances for the AD5280?
The AD5280 is available with fixed A-to-B terminal resistances of 20 kΩ, 50 kΩ, or 200 kΩ.
- What is the operating temperature range of the AD5280BRUZ200?
The operating temperature range is −40°C to +85°C.
- What type of interface does the AD5280BRUZ200 use?
The device uses an I2C-compatible, 2-wire serial data interface.
- What is the bandwidth of the AD5280BRUZ200?
The bandwidth is 35 kHz for the 200 kΩ version.
- How does the AD5280BRUZ200 handle power-on presets?
The device defaults to midscale at system power-on and can be programmed to any level during power-up using the sleep mode feature.
- What package type is the AD5280BRUZ200 available in?
The device is available in a 14-lead TSSOP package.
- What are some common applications of the AD5280BRUZ200?
Common applications include multimedia, video, and audio systems, communications equipment, mechanical potentiometer replacement, instrumentation, and programmable voltage and current sources.
- Does the AD5280BRUZ200 support additional logic outputs?
Yes, it has additional programmable logic outputs to drive digital loads, logic gates, LED drivers, and analog switches.
- What is the settling time of the AD5280BRUZ200?
The settling time is 5 μs (±1 LSB error band).
