0.3-8V; 1/2/4-channel digital potentiometers. For mechanical potentiometer replacement, programmable filters, delays, time constants, volume control, panning, line impendance matching, power supply adjustment The AD8403ARU50 is a digital potentiometer manufactured by Analog Devices Inc. (ADI). It is a 3-channel, 256-position, digitally controlled variable resistor. Key specifications include:

- **Resolution**: 8-bit (256 positions)
- **Number of Channels**: 3
- **Resistance Value**: 50 kΩ
- **Interface**: SPI-compatible
- **Supply Voltage**: 2.7 V to 5.5 V
- **Temperature Range**: -40°C to +125°C
- **Package**: 24-lead TSSOP
- **Non-Volatile Memory**: Yes (retains settings during power-off)
- **End-to-End Resistance Tolerance**: ±20%
- **Wiper Resistance**: 75 Ω (typical)
- **Power-On Midscale Preset**: Yes
- **Low Power Consumption**: Typically 3 µA in standby mode

These specifications make the AD8403ARU50 suitable for applications requiring precise digital control of resistance, such as in audio equipment, instrumentation, and industrial control systems.