Overview
The AD5263BRUZ50, produced by Analog Devices Inc., is a quad-channel, 256-position digital potentiometer. It is the industry’s first device of its kind with a selectable digital interface, allowing it 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. Each channel offers a completely programmable value of resistance between the A terminal and the wiper or between the B terminal and the wiper. The device operates from +4.5 V to +15 V or at ±5 V and is available in a 24-lead TSSOP package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | - |
| Positions per Channel | 256 | - |
| End-to-End Resistance | 20 kΩ, 50 kΩ, 200 kΩ | Ω |
| Temperature Coefficient (Rheostat Mode) | 30 ppm/°C | ppm/°C |
| Temperature Coefficient (Voltage Divider Mode) | 5 ppm/°C | ppm/°C |
| Operating Temperature Range | –40°C to +125°C | °C |
| Supply Voltage Range (Single Supply) | 4.5 V to 15 V | V |
| Supply Voltage Range (Dual Supply) | ±4.5 V to ±7.5 V | V |
| Interface | SPI or I2C-compatible | - |
| Package Type | 24-Lead TSSOP | - |
Key Features
- Selectable digital interface: 3-wire SPI or 2-wire I2C-compatible.
- Programmable resistance between A terminal and wiper or B terminal and wiper.
- Power-on preset to midscale.
- Wide operating temperature range: –40°C to +125°C.[
- Low temperature coefficient: 30 ppm/°C (rheostat mode), 5 ppm/°C (voltage divider mode).[
- Additional programmable logic outputs in I2C mode to drive digital loads, logic gates, and analog switches.[
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 AD5263BRUZ50 used for?
The AD5263BRUZ50 is used as a digital potentiometer to replace mechanical potentiometers or variable resistors in various applications, offering enhanced resolution and reliability.[
- How many channels does the AD5263BRUZ50 have?
The AD5263BRUZ50 has four channels, each with 256 positions.[
- What are the available end-to-end resistances for the AD5263BRUZ50?
The available end-to-end resistances are 20 kΩ, 50 kΩ, and 200 kΩ.[
- What is the operating temperature range of the AD5263BRUZ50?
The operating temperature range is –40°C to +125°C.[
- What digital interfaces does the AD5263BRUZ50 support?
The device supports both 3-wire SPI and 2-wire I2C-compatible interfaces.[
- What is the power-on default state of the wiper position?
The wiper position presets to midscale upon power-on.[
- Can the AD5263BRUZ50 be used in automotive applications?
- What package type is the AD5263BRUZ50 available in?
The device is available in a 24-lead TSSOP package.[
- What are some common applications of the AD5263BRUZ50?
- Does the AD5263BRUZ50 have additional programmable outputs?
