Overview
The AD5262BRU50, produced by Analog Devices Inc., is a dual-channel, 256-position, digitally controlled variable resistor (VR) device. This component functions as a digital potentiometer, offering the same electronic adjustment capabilities as a mechanical potentiometer or variable resistor. It is designed to operate with a single supply voltage of 5 V to 15 V or a dual supply voltage of ±5.5 V, making it versatile for various applications. Each channel of the AD5262 is independently programmable via an SPI-compatible serial interface, allowing for precise control over the resistance values.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 (independently programmable) |
| Number of Positions | 256 |
| Fixed Resistor Values | 20 kΩ, 50 kΩ, 200 kΩ |
| Temperature Coefficient | 35 ppm/°C |
| Supply Voltage | 5 V to 15 V (single supply), ±5.5 V (dual supply) |
| Interface | SPI-compatible serial interface |
| Operating Temperature | -40°C to +85°C |
| Package | 16-Lead TSSOP |
| Memory Type | Volatile |
Key Features
- 256-position digital potentiometer with linear taper
- Independently programmable dual channels
- SPI-compatible serial interface for easy control
- Low temperature coefficient of 35 ppm/°C
- Power on midscale preset
- Optional reset pin to force wiper to midscale position
- Cascade pin for daisy-chaining in multiple VR applications
Applications
- Mechanical potentiometer replacement
- Instrumentation: gain, offset adjustment
- Stereo channel audio level control
- Programmable voltage-to-current conversion
- Programmable filters, delays, time constants
- Line impedance matching
- Low resolution DAC replacement
Q & A
- What is the AD5262BRU50 used for? The AD5262BRU50 is used as a digital potentiometer, replacing mechanical potentiometers in various applications.
- How many channels does the AD5262BRU50 have? The AD5262BRU50 has two independently programmable channels.
- What are the fixed resistor values available for the AD5262BRU50? The fixed resistor values are 20 kΩ, 50 kΩ, and 200 kΩ.
- What is the temperature coefficient of the AD5262BRU50? The temperature coefficient is 35 ppm/°C.
- What is the operating voltage range for the AD5262BRU50? The operating voltage range is 5 V to 15 V (single supply) or ±5.5 V (dual supply).
- What interface does the AD5262BRU50 use for control? The AD5262BRU50 uses an SPI-compatible serial interface.
- What is the operating temperature range for the AD5262BRU50? The operating temperature range is -40°C to +85°C.
- What package type is the AD5262BRU50 available in? The AD5262BRU50 is available in a 16-Lead TSSOP package.
- Does the AD5262BRU50 have a reset feature? Yes, the AD5262BRU50 has an optional reset pin to force the wiper to the midscale position.
- Can multiple AD5262BRU50 devices be daisy-chained? Yes, multiple devices can be daisy-chained using the cascade pin.
