Overview
The AD5220BR10-REEL7, 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, making it ideal for applications requiring precise and programmable resistance adjustments.
The device features a three-wire serial input interface, including clock (CLK), chip select (CS), and UP/DOWN (U/D) control inputs. It operates within a power supply range of 2.7V to 5.5V and is available in various package options, including 8-lead SOIC, MSOP, and PDIP, 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 | ||
| Resistor Differential Nonlinearity | R-DNL | RWB, VA = NC, RAB = 10 kΩ | -1 | ±0.4 | +1 | LSB |
| Resistor Integral Nonlinearity | R-INL | RWB, VA = NC, RAB = 10 kΩ | -1 | ±0.5 | +1 | LSB |
| 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 |
Key Features
- 128-Position Digitally Controlled Variable Resistor: Provides precise resistance adjustments with 128 distinct positions.
- Low Power Consumption: Operates with a maximum supply current of 40 µA, making it suitable for low-power applications.
- Three-Wire Serial Interface: Includes clock (CLK), chip select (CS), and UP/DOWN (U/D) control inputs for easy integration into digital systems.
- Multiple Resistance Values: Available in 10 kΩ, 50 kΩ, and 100 kΩ end-to-end resistance configurations.
- Compact Packaging: Offered in 8-lead SOIC, MSOP, and PDIP packages for flexibility in design.
- Extended Temperature Range: Guaranteed to operate over the industrial temperature range of -40°C to +85°C.
- Automotive Qualified: Suitable for use in automotive applications with specific reliability reports available.
Applications
- Mechanical Potentiometer Replacement: Ideal for replacing mechanical potentiometers in various applications.
- Instrumentation and Test Equipment: Used for gain, offset adjustments, and other incremental adjustment needs.
- Programmable Voltage-to-Current Conversion: Can be used in circuits requiring programmable voltage-to-current conversion.
- Programmable Filters, Delays, Time Constants: Suitable for applications involving programmable filters and time constants.
- Line Impedance Matching: Used for impedance matching in various electronic circuits.
- Power Supply Adjustment: Can be used to adjust power supply settings in electronic systems.
Q & A
- What is the AD5220BR10-REEL7 used for?
The AD5220BR10-REEL7 is a digitally controlled variable resistor used as a replacement for mechanical potentiometers and variable resistors in various electronic applications.
- What are the available resistance values for the AD5220?
The AD5220 is available in 10 kΩ, 50 kΩ, and 100 kΩ end-to-end resistance configurations.
- What is the power supply range for the AD5220?
The AD5220 operates within a power supply range of 2.7V to 5.5V.
- What is the maximum supply current of the AD5220?
The maximum supply current of the AD5220 is 40 µA.
- What types of packages are available for the AD5220?
The AD5220 is available in 8-lead SOIC, MSOP, and PDIP packages.
- What is the temperature range for the AD5220?
The AD5220 is guaranteed to operate over the industrial temperature range of -40°C to +85°C.
- Is the AD5220 qualified for automotive applications?
Yes, the AD5220 is qualified for use in automotive applications.
- How many positions does the AD5220 offer for resistance adjustment?
The AD5220 offers 128 distinct positions for resistance adjustment.
- What is the wiper resistance of the AD5220?
The wiper resistance of the AD5220 is between 40 Ω and 100 Ω.
- What is the resistance temperature coefficient of the AD5220?
The resistance temperature coefficient of the AD5220 is 800 ppm/°C.
