Overview
The AD8403ARUZ100-REEL, produced by Analog Devices Inc., is a quad-channel, 256-position digitally controlled variable resistor (VR) device. This component is part of the AD8400/AD8402/AD8403 series, designed to perform the same electronic adjustment functions as mechanical potentiometers or variable resistors. The AD8403 is available in 24-lead PDIP, SOIC, and TSSOP packages, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Positions | 256 | |
| Resistor Values | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | |
| Power Supply Range | 2.7 V to 5.5 V | V |
| Supply Current (CMOS) | 0.01 μA to 5 μA | A |
| Power Shutdown Current | < 5 μA | A |
| Serial Interface | 3-Wire SPI-Compatible | |
| Update Data Loading Rate | Up to 10 MHz | Hz |
| Temperature Range | -40°C to +125°C | °C |
| Resistance Tempco | 500 ppm/°C | ppm/°C |
| Wiper Resistance | 50 Ω to 200 Ω | Ω |
Key Features
- Replaces 1, 2, or 4 mechanical potentiometers.
- Available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistor values.
- Power shutdown feature with less than 5 μA current.
- 3-Wire SPI-Compatible serial data input with speeds up to 10 MHz.
- Single-supply operation from 2.7 V to 5.5 V, suitable for battery-powered applications.
- Midscale preset capability.
- ±1% channel-to-channel matching tolerance.
Applications
- Mechanical potentiometer replacement.
- Programmable filters, delays, and time constants.
- Volume control and panning.
- Line impedance matching.
- Power supply adjustment.
- Automotive applications.
Q & A
- What is the AD8403ARUZ100-REEL used for?
The AD8403ARUZ100-REEL is a quad-channel, 256-position digitally controlled variable resistor used to replace mechanical potentiometers and variable resistors in various electronic applications.
- What are the available resistor values for the AD8403?
The AD8403 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistor values.
- What is the power supply range for the AD8403?
The AD8403 operates on a single supply from 2.7 V to 5.5 V.
- What is the maximum update data loading rate for the AD8403?
The AD8403 supports an update data loading rate of up to 10 MHz.
- What is the temperature range for the AD8403?
The AD8403 operates over a temperature range of -40°C to +125°C.
- Does the AD8403 have a power shutdown feature?
- What type of serial interface does the AD8403 use?
The AD8403 uses a 3-Wire SPI-Compatible serial interface.
- What is the wiper resistance of the AD8403?
The wiper resistance of the AD8403 is between 50 Ω and 200 Ω.
- Is the AD8403 suitable for automotive applications?
- What is the channel-to-channel matching tolerance of the AD8403?
The AD8403 has a ±1% channel-to-channel matching tolerance.
