Overview
The AD5280BRUZ20 is a single-channel, 256-position digital potentiometer produced by Analog Devices Inc. This component performs the same electronic adjustment functions as a traditional potentiometer, trimmer, or variable resistor. It features an I²C-compatible interface and offers a completely programmable resistance value between the A terminal and the wiper. The AD5280BRUZ20 is designed for applications requiring precise and programmable resistance adjustments, and it includes features such as sleep mode programmability and power-on midscale preset, making it a versatile solution for various electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Analog Devices Inc. | |
| Part Number | AD5280BRUZ20 | |
| Package | 14-TSSOP (0.173", 4.40mm Width) | |
| Number of Pins | 14 | |
| Resistance | 20 kΩ | |
| Number of Taps | 256 | |
| Tolerance | ±30% | |
| Temperature Coefficient | 30 ppm/°C (typ) | |
| Operating Temperature Range | -40°C to +85°C | |
| Supply Voltage Range | 4.5 V to 16.5 V | |
| Interface | I²C | |
| Memory Type | Volatile | |
| Logic Supply Current | 60 μA at VLOGIC = 5 V | |
| Bandwidth (3dB) | 310 kHz at RAB = 20 kΩ, code = 0x80 |
Key Features
- I²C-compatible interface for easy communication and control.
- 256-position digital potentiometer with completely programmable resistance values.
- Sleep mode programmability and power-on midscale preset for flexible operation.
- Low temperature coefficient of 30 ppm/°C (typ) for stable performance across temperature ranges.
- Operating supply voltage range of 4.5 V to 16.5 V, making it suitable for various power supply configurations.
- Volatile memory type, eliminating the need for costly EEPROM solutions.
- Programmable reset and additional programmable logic outputs for driving digital loads, logic gates, LED drivers, and analog switches.
Applications
- Multimedia, video, and audio systems.
- Communications equipment.
- Mechanical potentiometer replacement.
- Instrumentation: gain and offset adjustment, programmable voltage and current sources, line impedance matching.
- Any application requiring precise and programmable resistance adjustments.
Q & A
- What is the AD5280BRUZ20 used for?
The AD5280BRUZ20 is used as a digital potentiometer, performing the same electronic adjustment functions as a traditional potentiometer, trimmer, or variable resistor.
- What is the interface type of the AD5280BRUZ20?
The AD5280BRUZ20 uses an I²C-compatible interface.
- What is the number of taps on the AD5280BRUZ20?
The AD5280BRUZ20 has 256 taps.
- What is the operating temperature range of the AD5280BRUZ20?
The operating temperature range is -40°C to +85°C.
- What is the supply voltage range for the AD5280BRUZ20?
The supply voltage range is 4.5 V to 16.5 V.
- Does the AD5280BRUZ20 have a sleep mode?
Yes, the AD5280BRUZ20 has sleep mode programmability.
- What is the memory type of the AD5280BRUZ20?
The memory type is volatile.
- What is the typical temperature coefficient of the AD5280BRUZ20?
The typical temperature coefficient is 30 ppm/°C.
- What are some common applications of the AD5280BRUZ20?
Common applications include multimedia, video, and audio systems, communications equipment, mechanical potentiometer replacement, and instrumentation.
- What is the bandwidth (3dB) of the AD5280BRUZ20 at RAB = 20 kΩ?
The bandwidth (3dB) is 310 kHz at RAB = 20 kΩ, code = 0x80.
