Overview
The AD8403ARU100 is a quad-channel digital potentiometer produced by Analog Devices Inc. This component is part of the AD8400/AD8402/AD8403 series, designed to provide a digitally controlled variable resistor function similar to that of a mechanical potentiometer. It features four independent variable resistors, each with 256 programmable positions, making it versatile for various applications requiring precise resistance adjustments.
Key Specifications
| Parameter | Value |
|---|---|
| Taps | 256 |
| Resistance (Ohms) | 100k |
| Number of Circuits | 4 |
| Temperature Coefficient | 500 ppm/°C Typical |
| Memory Type | Volatile |
| Interface | 4-Wire SPI (Chip Select) |
| Voltage - Supply | 2.7 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package Type | 24-TSSOP |
| Wiper Resistance (Typ.) | 200 Ω (at VDD = 5V) |
Key Features
- Quad-channel digital potentiometer with 256 programmable positions per channel.
- 4-wire SPI-compatible serial data input with a 10 MHz update data loading rate.
- Single-supply operation from 2.7 V to 5.5 V.
- Low power shutdown current of less than 5 μA.
- High temperature stability with a nominal temperature coefficient of 500 ppm/°C.
- Compact 24-lead TSSOP package.
Applications
- Mechanical potentiometer replacement.
- Programmable filters, delays, and time constants.
- Volume control and panning.
- Line impedance matching.
- Power supply adjustment.
- Qualified for automotive applications.
Q & A
- What is the AD8403ARU100 used for? The AD8403ARU100 is used as a digital potentiometer to replace mechanical potentiometers and for various applications requiring precise resistance adjustments.
- How many channels does the AD8403ARU100 have? The AD8403ARU100 has four independent channels.
- What is the resistance range of the AD8403ARU100? The AD8403ARU100 has a fixed resistance of 100 kΩ with 256 programmable positions.
- What is the operating temperature range of the AD8403ARU100? The operating temperature range is -40°C to 125°C.
- What type of interface does the AD8403ARU100 use? The AD8403ARU100 uses a 4-wire SPI (Chip Select) interface.
- What is the supply voltage range for the AD8403ARU100? The supply voltage range is 2.7 V to 5.5 V.
- What is the typical temperature coefficient of the AD8403ARU100? The typical temperature coefficient is 500 ppm/°C.
- What is the package type of the AD8403ARU100? The package type is 24-TSSOP.
- Is the AD8403ARU100 suitable for automotive applications? Yes, it is qualified for automotive applications.
- What is the wiper resistance of the AD8403ARU100? The typical wiper resistance is 200 Ω at VDD = 5V.
