Overview
The AD5263BRU50-REEL7, produced by Analog Devices Inc., is a quad-channel, 256-position digital potentiometer with a selectable digital interface. 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. 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. The device operates over a wide temperature range of –40°C to +125°C and can be powered from a single supply of 10 V to 15 V or a dual supply of ±5 V.
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 | 10 V to 15 V (single supply), ±5 V (dual supply) | V |
| Digital Interface | 3-wire SPI or 2-wire I2C-compatible | |
| Package Type | 24-Lead TSSOP |
Key Features
- Selectable digital interface: 3-wire SPI or 2-wire I2C-compatible.
- Completely programmable resistance values between A terminal and wiper or B terminal and wiper.
- Fixed A-to-B terminal resistance of 20 kΩ, 50 kΩ, or 200 kΩ with a nominal temperature coefficient of ±30 ppm/°C.
- ±1% channel-to-channel matching tolerance.
- Power-on preset to midscale.
- Additional programmable logic outputs in I2C mode to drive digital loads, logic gates, and analog switches.
- Wide operating temperature range of –40°C to +125°C.
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 AD5263BRU50-REEL7?
The AD5263BRU50-REEL7 is a quad-channel, 256-position digital potentiometer with a selectable digital interface produced by Analog Devices Inc.
- What are the available end-to-end resistance values for the AD5263?
The AD5263 is available with end-to-end resistance values of 20 kΩ, 50 kΩ, or 200 kΩ.
- What is the operating temperature range of the AD5263?
The AD5263 operates over a temperature range of –40°C to +125°C.
- What digital interfaces are supported by the AD5263?
The AD5263 supports both 3-wire SPI and 2-wire I2C-compatible digital interfaces.
- What is the package type of the AD5263?
The AD5263 is available in a 24-Lead TSSOP package.
- What are some common applications of the AD5263?
Common applications include mechanical potentiometer replacement, optical network adjustment, instrumentation, stereo channel audio level control, and more.
- How does the AD5263 handle power-on?
The wiper position presets to midscale upon power-on.
- What is the channel-to-channel matching tolerance of the AD5263?
The channel-to-channel matching tolerance is ±1%.
- Can the AD5263 be used in automotive applications?
- What is the temperature coefficient of the AD5263 in rheostat mode?
The temperature coefficient in rheostat mode is 30 ppm/°C.
