Overview
The AD5220BNZ10, manufactured by Analog Devices Inc., is a single-channel, 128-position digitally controlled variable resistor (VR) device. This component functions as a digital potentiometer, providing electronic adjustment similar to a mechanical potentiometer. It is designed for applications requiring precise and programmable resistance adjustments.
The device is part of the AD5220 series, which includes various resistance values such as 10 kΩ, 50 kΩ, and 100 kΩ. The AD5220BNZ10 specifically offers a 10 kΩ end-to-end resistance with 128 tap positions. It is available in an 8-lead plastic DIP package and operates over an extended industrial temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| End-to-End Resistance | RAB | - | - | 10 kΩ | - | Ω |
| Number of Taps | - | - | - | 128 | - | - |
| Resistor Differential Nonlinearity (R-DNL) | R-DNL | RWB, VA = NC, RAB = 10 kΩ | -1 | ±0.4 | +1 | LSB |
| Resistor Integral Nonlinearity (R-INL) | R-INL | RWB, VA = NC, RAB = 10 kΩ | -1 | ±0.5 | +1 | 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 |
| 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 |
| Input Current | IIL | VIN = 0 V or +5 V | - | ±1 | - | µA |
| 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 |
| Operating Temperature | TA | - | -40°C | - | +85°C | °C |
Key Features
- Digital Potentiometer Functionality: The AD5220BNZ10 acts as a digital replacement for mechanical potentiometers, offering 128 tap positions.
- Low Power Consumption: The device operates with very low power, with a maximum supply current of 40 µA.
- Increment/Decrement Control: It features a three-wire serial interface with clock (CLK), chip select (CS), and up/down (U/D) control pins.
- Wide Resistance Range: Available in 10 kΩ, 50 kΩ, and 100 kΩ versions, providing flexibility in design.
- Extended Temperature Range: Guaranteed to operate over -40°C to +85°C, making it suitable for industrial and automotive applications.
- Compact Packaging: Available in 8-lead plastic DIP, SO-8, and thin μSOIC packages for various design needs.
Applications
- Mechanical Potentiometer Replacement: Ideal for replacing mechanical potentiometers in various applications.
- Incremental Adjustment Applications: Suitable for push-button controlled adjustments in instrumentation and test equipment.
- Programmable Voltage-to-Current Conversion: Can be used in applications requiring programmable voltage-to-current conversion.
- Programmable Filters, Delays, Time Constants: Useful in designing programmable filters, delays, and time constants.
- Line Impedance Matching: Can be used for impedance matching in various circuits.
- Power Supply Adjustment: Suitable for adjusting power supply settings in electronic systems.
Q & A
- What is the primary function of the AD5220BNZ10?
The AD5220BNZ10 is a single-channel, 128-position digitally controlled variable resistor, functioning as a digital potentiometer.
- What are the available resistance values for the AD5220 series?
The AD5220 series is available in 10 kΩ, 50 kΩ, and 100 kΩ versions.
- What is the operating temperature range of the AD5220BNZ10?
The device operates over an extended industrial temperature range of -40°C to +85°C.
- What is the power supply range for the AD5220BNZ10?
The power supply range is from 2.7 V to 5.5 V.
- How many tap positions does the AD5220BNZ10 have?
The device has 128 tap positions.
- What is the typical wiper resistance of the AD5220BNZ10?
The typical wiper resistance is 100 Ω.
- What type of interface does the AD5220BNZ10 use?
The device uses a three-wire serial interface with clock (CLK), chip select (CS), and up/down (U/D) control pins.
- Is the AD5220BNZ10 suitable for automotive applications?
Yes, the AD5220BNZ10 is qualified for automotive applications.
- What are some common applications of the AD5220BNZ10?
Common applications include mechanical potentiometer replacement, incremental adjustment applications, programmable voltage-to-current conversion, and power supply adjustment.
- What are the available package types for the AD5220BNZ10?
The device is available in 8-lead plastic DIP, SO-8, and thin μSOIC packages.
