Overview
The AD5220BR10, produced by Analog Devices Inc., is a single-channel, 128-position digitally controlled variable resistor (VR) device. This component functions as an electronic replacement for mechanical potentiometers and variable resistors. It is designed for applications requiring precise and programmable resistance adjustments, such as in instrumentation, test equipment, and various control systems.
The device features a three-wire serial input interface with clock (CLK), chip select (CS), and up/down (U/D) control inputs. It operates over a wide power supply range of 2.7V to 5.5V and is available in several package types, including 8-lead SOIC, PDIP, and MSOP, ensuring versatility in design and implementation.
Key Specifications
| Parameter | Symbol | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|---|
| Power Supply Range | VDD | 2.7 | 5.5 | V | ||
| Supply Current | IDD | VIH = +5 V or VIL = 0 V, VDD = +5 V | 15 | 40 | µA | |
| Power Dissipation | PDISS | VIH = +5 V or VIL = 0 V, VDD = +5 V | 75 | 200 | µW | |
| Input Logic High | VIH | VDD = +5 V/+3 V | 2.4/2.1 | V | ||
| Input Logic Low | VIL | VDD = +5 V/+3 V | 0.8/0.6 | V | ||
| Wiper Resistance | RW | IW = VDD/R, VDD = +3 V or +5 V | 40 | 100 | Ω | |
| Resistance Temperature Coefficient | ∆RAB/∆T | VAB = VDD, Wiper = No Connect | 800 | ppm/°C | ||
| Operating Temperature | -40 | +85 | °C |
Key Features
- 128-position digitally controlled variable resistor with a choice of 10 kΩ, 50 kΩ, or 100 kΩ end-to-end resistance.
- Three-wire serial interface (CLK, CS, U/D) for easy digital control and programming.
- Low power consumption with a maximum supply current of 40 µA.
- Operating temperature range of -40°C to +85°C, making it suitable for industrial and automotive applications.
- Available in various package types including 8-lead SOIC, PDIP, and MSOP).
- High precision with low differential and integral nonlinearity errors).
- Wiper resistance of 40 Ω to 100 Ω, depending on the configuration).
Applications
- Replacement for mechanical potentiometers in various applications.
- Instrumentation: gain and offset adjustment, programmable voltage-to-current conversion).
- Programmable filters, delays, and time constants).
- Line impedance matching and power supply adjustment).
- Incremental adjustment applications in test equipment and control systems).
Q & A
- What is the AD5220BR10 used for?
The AD5220BR10 is used as a digitally controlled variable resistor, replacing mechanical potentiometers in various applications such as instrumentation, test equipment, and control systems.
- What are the available resistance values for the AD5220?
The AD5220 is available with end-to-end resistance values of 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating temperature range of the AD5220BR10?
The operating temperature range is -40°C to +85°C.
- How is the AD5220BR10 controlled?
The AD5220BR10 is controlled via a three-wire serial interface (CLK, CS, U/D).
- What are the typical power consumption characteristics of the AD5220BR10?
The device has a maximum supply current of 40 µA and power dissipation of up to 200 µW.
- What are the package options available for the AD5220BR10?
The device is available in 8-lead SOIC, PDIP, and MSOP packages.
- What is the wiper resistance of the AD5220BR10?
The wiper resistance is typically between 40 Ω and 100 Ω, depending on the configuration.
- Is the AD5220BR10 suitable for automotive applications?
Yes, the AD5220BR10 is qualified for automotive applications.
- What are some common applications of the AD5220BR10?
Common applications include instrumentation, programmable voltage-to-current conversion, programmable filters, and power supply adjustment.
- How many positions does the AD5220BR10 have?
The AD5220BR10 has 128 positions.
