Overview
The AD5220BR100 is a 128-position, single-channel, digitally controlled variable resistor (digital potentiometer) produced by Analog Devices Inc. This device is designed for applications requiring precise and programmable resistance settings. It operates with a supply voltage range of 2.7 V to 5.5 V and features an increment/decrement control interface. The AD5220BR100 is packaged in an 8-SOIC (0.154", 3.90mm Width) and is suitable for surface mount applications.
Key Specifications
| Parameter | Symbol | Conditions | Typical | Maximum | Units |
|---|---|---|---|---|---|
| Resistance | RAB | - | - | 100 kΩ | - |
| Number of Taps | - | - | 128 | - | - |
| Supply Voltage | VDD | - | 2.7 V to 5.5 V | - | V |
| Operating Temperature | TA | - | -40°C to 85°C | - | °C |
| Temperature Coefficient | ∆RAB/∆T | VAB = VDD, Wiper = No Connect | 800 ppm/°C | - | ppm/°C |
| Wiper Resistance | RW | IW = VDD/R, VDD = +3 V or +5 V | 40 Ω | 100 Ω | Ω |
| Input Logic High | VIH | VDD = +5 V/+3 V | 2.4 V / 2.1 V | - | V |
| Input Logic Low | VIL | VDD = +5 V/+3 V | 0.8 V / 0.6 V | - | V |
| Supply Current | IDD | VIH = +5 V or VIL = 0 V, VDD = +5 V | 15 µA | 40 µA | µA |
Key Features
- 128-position digitally controlled variable resistor
- Increment/decrement control interface via UP/DOWN (U/D) and CS pins
- Operates with a supply voltage range of 2.7 V to 5.5 V
- Low wiper resistance of 40 Ω typical
- Temperature coefficient of 800 ppm/°C
- Surface mount 8-SOIC package
- Volatile memory type
- Linear taper configuration
Applications
The AD5220BR100 is suitable for a variety of applications, including:
- Audio and video equipment for volume control and tone adjustment
- Industrial control systems for sensor calibration and gain adjustment
- Medical devices requiring precise resistance settings
- Automotive systems for various control functions
- General-purpose digital potentiometer applications where programmable resistance is needed
Q & A
- What is the resistance range of the AD5220BR100?
The AD5220BR100 has a fixed total resistance of 100 kΩ. - How many positions does the AD5220BR100 have?
The AD5220BR100 has 128 positions. - What is the operating temperature range of the AD5220BR100?
The operating temperature range is -40°C to 85°C. - What is the typical wiper resistance of the AD5220BR100?
The typical wiper resistance is 40 Ω. - How is the AD5220BR100 controlled?
The AD5220BR100 is controlled via an increment/decrement interface using the UP/DOWN (U/D) and CS pins. - What is the supply voltage range for the AD5220BR100?
The supply voltage range is 2.7 V to 5.5 V. - Is the AD5220BR100 suitable for surface mount applications?
Yes, it is packaged in an 8-SOIC and is suitable for surface mount applications. - What is the temperature coefficient of the AD5220BR100?
The temperature coefficient is 800 ppm/°C. - Does the AD5220BR100 require external debounce circuitry?
Yes, external debounce circuitry is required when using mechanical switches to control the count sequence and direction. - What type of memory does the AD5220BR100 use?
The AD5220BR100 uses volatile memory.
