Overview
The AD5262BRU20-REEL7 is a dual-channel, 256-position, digitally controlled variable resistor (VR) device manufactured by Analog Devices Inc. This component is part of the AD5260/AD5262 series and is designed to operate up to a maximum voltage of 15 V. It features a 3-wire serial interface for programming the VR settings, making it suitable for various applications requiring precise resistance control.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Nominal Resistance (RAB) | 20 kΩ | kΩ |
| Number of Positions | 256 | - |
| Operating Temperature Range | −40°C to +85°C | °C |
| Maximum Junction Temperature (TJ MAX) | 150°C | °C |
| Storage Temperature Range | −65°C to +150°C | °C |
| Power Supply Range (Single-Supply) | 4.5 V to 16.5 V | V |
| Power Supply Range (Dual-Supply) | ±4.5 V to ±5.5 V | V |
| Clock Frequency (fCLK) | 25 MHz | MHz |
| Data Setup Time (tDS) | 10 ns | ns |
| Data Hold Time (tDH) | 10 ns | ns |
| CLK to SDO Propagation Delay (tPD) | 160 ns | ns |
Key Features
- Dual-Channel Operation: The AD5262BRU20-REEL7 offers two independent channels, each with 256-position digitally controlled variable resistors.
- Programmable Resistance: The resistance between the terminals can be programmed using an 8-bit or 9-bit serial data word, allowing for precise control over the resistance settings.
- 3-Wire Serial Interface: The device uses a 3-wire serial interface for data input, which includes clock, data, and chip select lines.
- Preset to Midscale: The device presets to midscale during power-up, simplifying fault condition recovery.
- Low Power Consumption: The device operates with low power dissipation, making it suitable for power-sensitive applications.
- Wide Operating Temperature Range: The component is guaranteed to operate over an extended industrial temperature range of −40°C to +85°C.
Applications
- Audio and Video Equipment: Used for volume control, tone control, and other audio/video adjustments.
- Industrial Control Systems: Suitable for applications requiring precise resistance control in industrial automation.
- Medical Equipment: Used in medical devices where precise and reliable resistance control is necessary.
- Aerospace and Defense: Applicable in various military and aerospace applications due to its robust performance over a wide temperature range.
- Automotive Systems: Used in automotive electronics for various control functions.
Q & A
- What is the nominal resistance of the AD5262BRU20-REEL7?
The nominal resistance (RAB) of the AD5262BRU20-REEL7 is 20 kΩ.
- How many positions does the digital potentiometer have?
The AD5262BRU20-REEL7 has 256 positions for each channel.
- What is the operating temperature range of the AD5262BRU20-REEL7?
The operating temperature range is −40°C to +85°C.
- How is the resistance programmed in the AD5262BRU20-REEL7?
The resistance is programmed by clocking an 8-bit or 9-bit serial data word into the SDI (serial data input) pin.
- Does the AD5262BRU20-REEL7 have a preset function?
Yes, the device presets to midscale during power-up, and this can also be achieved at any time by asserting the PR pin.
- What is the clock frequency of the AD5262BRU20-REEL7?
The clock frequency (fCLK) is up to 25 MHz.
- What is the power supply range for the AD5262BRU20-REEL7?
The power supply range is from 4.5 V to 16.5 V for single-supply and ±4.5 V to ±5.5 V for dual-supply.
- Can multiple devices be connected on the same bus?
Yes, multiple AD5262 devices can be connected on the same bus using the chip select (CS) pin to address each device individually.
- What is the typical power dissipation of the AD5262BRU20-REEL7?
The typical power dissipation is around 0.2 to 0.3 mW.
- Does the AD5262BRU20-REEL7 have ESD protection?
Yes, the device has ESD protection for digital inputs..
