Overview
The AD5280BRUZ20-REEL7, produced by Analog Devices Inc., is a single-channel, 256-position, digitally controlled variable resistor (VR). This device is part of the AD5280/AD5282 series and is designed for precise resistance control in various electronic applications. It features an internal power-on preset that sets the wiper to midscale during power-up, simplifying fault condition recovery. The device operates via an I2C interface, allowing for easy integration into digital systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Nominal Resistance (RAB) | 20 kΩ, 50 kΩ, 200 kΩ | Ω |
| Number of Positions | 256 | - |
| Supply Voltage Range | 4.5 V to 16.5 V (single supply), ±4.5 V to ±5.5 V (dual supply) | V |
| Logic Supply Voltage | 2.7 V to VDD | V |
| Logic Supply Current | 60 μA (at VLOGIC = 5 V) | μA |
| Power Dissipation | 0.2 to 0.3 mW | mW |
| Bandwidth (-3 dB) | 310 kHz (RAB = 20 kΩ), 150 kHz (RAB = 50 kΩ), 35 kHz (RAB = 200 kΩ) | kHz |
| Total Harmonic Distortion (THD) | 0.014 % (VA = 1 V rms, RAB = 20 kΩ, f = 1 kHz) | % |
| Settling Time | 5 μs (VA = 5 V, VB = 5 V, ±1 LSB error band) | μs |
| Package | 14-TSSOP (0.173, 4.40mm Width) | - |
| Operating Temperature | -40°C to 85°C | °C |
Key Features
- Digitally controlled variable resistor with 256 positions.
- Internal power-on preset to midscale for simplified fault recovery.
- I2C interface for digital control.
- Available in three nominal resistance values: 20 kΩ, 50 kΩ, and 200 kΩ.
- Single and dual supply operation.
- Low power dissipation and high bandwidth.
- Compact 14-TSSOP package.
Applications
The AD5280BRUZ20-REEL7 is suitable for a variety of applications requiring precise resistance control, such as:
- Audio and video equipment for volume and tone control.
- Industrial control systems for sensor calibration and gain adjustment.
- Medical devices for precise voltage and current control.
- Aerospace and defense systems where high reliability and precision are critical.
- Automotive systems for various control and calibration needs.
Q & A
- What is the nominal resistance range of the AD5280BRUZ20-REEL7?
The nominal resistance range is available in 20 kΩ, 50 kΩ, and 200 kΩ. - What interface does the AD5280BRUZ20-REEL7 use for digital control?
The device uses an I2C interface. - What is the power-on preset feature of the AD5280BRUZ20-REEL7?
The device has an internal power-on preset that sets the wiper to midscale during power-up. - What is the operating temperature range of the AD5280BRUZ20-REEL7?
The operating temperature range is -40°C to 85°C. - What is the package type of the AD5280BRUZ20-REEL7?
The device is packaged in a 14-TSSOP (0.173, 4.40mm Width). - What is the total harmonic distortion (THD) of the AD5280BRUZ20-REEL7?
The THD is 0.014% (VA = 1 V rms, RAB = 20 kΩ, f = 1 kHz). - What is the settling time of the AD5280BRUZ20-REEL7?
The settling time is 5 μs (VA = 5 V, VB = 5 V, ±1 LSB error band). - Can the AD5280BRUZ20-REEL7 operate on both single and dual supplies?
Yes, it can operate on both single and dual supplies. - What is the logic supply voltage range for the AD5280BRUZ20-REEL7?
The logic supply voltage range is 2.7 V to VDD. - What is the typical logic supply current of the AD5280BRUZ20-REEL7?
The typical logic supply current is 60 μA (at VLOGIC = 5 V).
