Overview
The AD5263BRU20, produced by Analog Devices Inc., is a quad-channel, 256-position digital potentiometer. This device is designed to perform the same electronic adjustment functions as mechanical potentiometers or variable resistors but with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. It features a selectable digital interface, allowing users to choose between SPI and I2C communication protocols. Each channel of the AD5263 offers a completely programmable value of resistance between the A terminal and the wiper or between the B terminal and the wiper, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Number of Positions | 256 | |
| End-to-End Resistance | 20 kΩ, 50 kΩ, 200 kΩ | Ω |
| Digital Interface | SPI or I2C | |
| Power-On Preset | Midscale | |
| Operating Temperature Range | –40°C to +125°C | °C |
| Supply Voltage Range | 4.5 V to 15 V (single supply), ±5 V (dual supply) | V |
| Rheostat Mode Temperature Coefficient | 30 ppm/°C | ppm/°C |
| Voltage Divider Temperature Coefficient | 5 ppm/°C | ppm/°C |
Key Features
- Selectable SPI or I2C digital interface
- 256-position resolution for each channel
- End-to-end resistance options: 20 kΩ, 50 kΩ, 200 kΩ
- Power-on preset to midscale
- Wide operating temperature range: –40°C to +125°C
- Single supply operation: 4.5 V to 15 V; dual supply operation: ±5 V
- Low temperature coefficient: 30 ppm/°C (rheostat mode), 5 ppm/°C (voltage divider mode)
- Two package address decode pins (AD0 and AD1)
Applications
- Mechanical potentiometer replacement
- Optical network adjustment
- Instrumentation: gain, offset adjustment
- Stereo channel audio level control
- Automotive electronics adjustment
- Programmable power supply
- Programmable filters, delays, time constants
- Line impedance matching
- Low resolution DAC/trimmer replacement
- Base station power amp biasing
- Sensor calibration
Q & A
- What is the AD5263BRU20 used for?
The AD5263BRU20 is used as a digital potentiometer to replace mechanical potentiometers or variable resistors in various electronic applications.
- How many channels does the AD5263BRU20 have?
The AD5263BRU20 has four independent channels.
- What are the end-to-end resistance options for the AD5263BRU20?
The end-to-end resistance options are 20 kΩ, 50 kΩ, and 200 kΩ.
- What digital interfaces are supported by the AD5263BRU20?
The AD5263BRU20 supports both SPI and I2C digital interfaces.
- What is the power-on preset position of the wiper?
The wiper position presets to midscale upon power-on.
- What is the operating temperature range of the AD5263BRU20?
The operating temperature range is –40°C to +125°C.
- What are the supply voltage ranges for the AD5263BRU20?
The supply voltage ranges are 4.5 V to 15 V for single supply and ±5 V for dual supply.
- What is the temperature coefficient of the AD5263BRU20 in rheostat mode?
The temperature coefficient in rheostat mode is 30 ppm/°C.
- What are some common applications of the AD5263BRU20?
Common applications include mechanical potentiometer replacement, optical network adjustment, instrumentation, audio level control, and programmable power supplies.
- How does the AD5263BRU20 improve over traditional mechanical potentiometers?
The AD5263BRU20 offers enhanced resolution, solid-state reliability, and superior low temperature coefficient performance compared to traditional mechanical potentiometers.
