Overview
The AD5207BRU100, produced by Analog Devices Inc., is a 2-channel, 256-position digital potentiometer. This device performs the same electronic adjustment function as a mechanical potentiometer but offers the advantages of digital control. Each channel contains a fixed resistor with a wiper contact that can be set to one of 256 positions, determined by a digital code loaded into the SPI-compatible serial input register. The device is available in a 1.1 mm thin TSSOP-14 package, making it suitable for applications requiring compact design, such as PCMCIA cards. It operates over an extended industrial temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Channels | 2 | - | - |
| Number of Positions | 256 | - | - |
| Resistor Values | 10 kΩ, 50 kΩ, 100 kΩ | - | Nominal resistance between Terminals A and B |
| Temperature Range | -40°C to +125°C | - | Operating temperature range |
| Power Supply | +2.7V to +5.5V (Single Supply), ±2.7V (Dual Supply) | V | Power supply voltage range |
| Shutdown Current | < 5 µA | A | Current consumption during shutdown |
| Package Type | TSSOP-14 | - | Package type and pin count |
| Digital Interface | 3-Wire SPI Compatible | - | Serial data input interface |
Key Features
- Dual Channel Operation: Each channel can be independently controlled to one of 256 positions.
- Programmable Resistance: The resistance between the wiper and either end point of the fixed resistor can be set programmatically, offering a completely programmable value of resistance.
- Power Shutdown: The device features a shutdown mode where terminals A are open-circuited and the wiper terminals are shorted to B, resulting in minimal leakage current and negligible power dissipation.
- Midscale Preset: The device presets to a midscale position during power-up.
- Low Leakage Currents: The device has low channel on leakage currents, ensuring minimal current consumption in active and shutdown states.
- ESD Protection: Digital inputs are protected with a series input resistor and parallel Zener ESD structure.
Applications
- Mechanical Potentiometer Replacement: Replaces mechanical potentiometers in various applications.
- Stereo Channel Audio Level Control: Used in audio systems for level control.
- Instrumentation: For gain and offset adjustments in instrumentation systems.
- Programmable Voltage to Current Conversion: Can be used in voltage to current conversion circuits.
- Programmable Filters, Delays, Time Constants: Used in filter circuits and for setting time constants.
- Line Impedance Matching: For impedance matching in various electronic circuits.
- Automotive Electronics Adjustment: Used in automotive electronics for various adjustment needs.
Q & A
- What is the AD5207BRU100 used for?
The AD5207BRU100 is a 2-channel, 256-position digital potentiometer used to replace mechanical potentiometers and for various electronic adjustments in different applications. - What are the available resistor values for the AD5207BRU100?
The available resistor values are 10 kΩ, 50 kΩ, and 100 kΩ. - What is the operating temperature range of the AD5207BRU100?
The operating temperature range is -40°C to +125°C. - How does the power shutdown feature work?
During shutdown, terminals A are open-circuited, and the wiper terminals are shorted to B, resulting in minimal leakage current and negligible power dissipation. - What type of digital interface does the AD5207BRU100 use?
The device uses a 3-wire SPI-compatible serial input interface. - What is the package type of the AD5207BRU100?
The device is available in a TSSOP-14 package. - Does the AD5207BRU100 have ESD protection?
Yes, the digital inputs are protected with a series input resistor and parallel Zener ESD structure. - Can the AD5207BRU100 be used in automotive electronics?
Yes, it can be used for various adjustment needs in automotive electronics. - How many positions can each channel of the AD5207BRU100 be set to?
Each channel can be set to one of 256 positions. - What happens to the wiper position during power-up?
The device presets to a midscale position during power-up.
