Overview
The AD5220BR100-REEL, produced by Analog Devices Inc., is a 128-position digitally controlled variable resistor (VR) device. This component is part of the AD5220 series, which offers a range of nominal resistance values, including 10 kΩ, 50 kΩ, and 100 kΩ. The AD5220BR100-REEL specifically features a nominal resistance of 100 kΩ. It is designed to provide precise and flexible resistance control, making it suitable for various applications requiring adjustable resistance settings.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resistor Differential Nonlinearity (R-DNL) | R-DNL | RWB, VA = NC, RAB = 100 kΩ | -0.5 | ±0.1 | +0.5 | LSB |
| Resistor Integral Nonlinearity (R-INL) | R-INL | RWB, VA = NC, RAB = 100 kΩ | -0.5 | ±0.1 | +0.5 | LSB |
| Nominal Resistor Tolerance | ∆R | TA = +25°C | -30 | +30 | % | |
| Resistance Temperature Coefficient | ∆RAB/∆T | VAB = VDD, Wiper = No Connect | 800 | ppm/°C | ||
| Wiper Resistance | RW | IW = VDD/R, VDD = +3 V or +5 V | 40 | 100 | Ω | |
| Operating Temperature Range | -40 | +85 | °C |
Key Features
- Digitally Controlled Variable Resistor: The AD5220BR100-REEL offers 128-position digital control, allowing for precise adjustment of the resistance setting.
- Multiple Nominal Resistance Values: Available in 10 kΩ, 50 kΩ, and 100 kΩ, with the AD5220BR100-REEL specifically featuring 100 kΩ.
- Low Nonlinearity: The device exhibits low differential and integral nonlinearity, ensuring accurate resistance settings.
- Temperature Stability: A resistance temperature coefficient of 800 ppm/°C ensures stable performance over a wide temperature range.
- ESD Protection: All digital inputs are protected with a series input resistor and parallel Zener ESD structure.
- Various Package Options: Available in 8-Lead PDIP, SOIC_N, and MSOP packages.
Applications
The AD5220BR100-REEL is suitable for a variety of applications, including:
- Audio and Video Equipment: For volume control, tone control, and other adjustable resistance needs.
- Industrial Control Systems: For adjusting sensor calibration, gain settings, and other control parameters.
- Medical Devices: For precise resistance adjustments in medical equipment.
- Automotive Systems: Qualified for automotive applications, it can be used in various automotive control systems.
- General Purpose Analog Circuits: For any application requiring digitally controlled variable resistance.
Q & A
- What is the nominal resistance of the AD5220BR100-REEL?
The nominal resistance of the AD5220BR100-REEL is 100 kΩ. - How many positions of digital control does the AD5220BR100-REEL offer?
The AD5220BR100-REEL offers 128 positions of digital control. - What is the operating temperature range of the AD5220BR100-REEL?
The operating temperature range is -40°C to +85°C. - What is the resistance temperature coefficient of the AD5220BR100-REEL?
The resistance temperature coefficient is 800 ppm/°C. - Does the AD5220BR100-REEL have ESD protection?
Yes, all digital inputs are protected with a series input resistor and parallel Zener ESD structure. - In what packages is the AD5220BR100-REEL available?
The AD5220BR100-REEL is available in 8-Lead PDIP, SOIC_N, and MSOP packages. - Is the AD5220BR100-REEL suitable for automotive applications?
Yes, it is qualified for automotive applications. - How is the wiper position controlled in the AD5220BR100-REEL?
The wiper position is controlled by pulsing the CLK pin while CS is active low, with the direction controlled by the U/D (UP/DOWN) control input pin. - What is the typical wiper resistance of the AD5220BR100-REEL?
The typical wiper resistance is 100 Ω. - Does the AD5220BR100-REEL require any additional circuitry for operation?
Yes, appropriate debounce circuitry is required when using push button switches to control the count sequence and direction of count.
