Overview
The AD8403ARUZ1, produced by Analog Devices Inc., is a 4-channel digital potentiometer that offers a digitally controlled variable resistor (VR) function. This device is part of the AD8400/AD8402/AD8403 series, which provides single-, dual-, or quad-channel configurations. The AD8403 specifically contains four independent variable resistors, making it suitable for applications requiring multiple programmable resistance values.
The device operates over an extended industrial temperature range of −40°C to +125°C and supports single-supply operation from 2.7 V to 5.5 V. It features a 3-wire SPI-compatible serial data input and a high update data loading rate of 10 MHz. Each channel offers 256 programmable positions, allowing for precise control over the resistance values.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Number of Positions | 256 | |
| Resistance Options | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | |
| Operating Temperature Range | −40°C to +125°C | °C |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Power Shutdown Current | < 5 μA | μA |
| Update Data Loading Rate | 10 MHz | MHz |
| Resistance Tempco (typ) | 500 ppm/°C | ppm/°C |
| Package Type | 24-Lead TSSOP |
Key Features
- Four independent variable resistors with 256 programmable positions each.
- Resistance options: 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- 3-wire SPI-compatible serial data input for easy digital control.
- High update data loading rate of 10 MHz.
- Single-supply operation from 2.7 V to 5.5 V.
- Power shutdown feature with less than 5 μA current draw.
- Extended industrial temperature range of −40°C to +125°C.
- Available in 24-lead PDIP, SOIC, and TSSOP packages.
Applications
- Mechanical potentiometer replacement.
- Programmable filters, delays, and time constants.
- Volume control and panning in audio systems.
- Line impedance matching.
- Power supply adjustment.
- Automotive applications due to its extended temperature range and robust design.
Q & A
- What is the AD8403ARUZ1 used for?
The AD8403ARUZ1 is a 4-channel digital potentiometer used to replace mechanical potentiometers and provide programmable resistance values in various applications.
- What are the available resistance options for the AD8403ARUZ1?
The AD8403ARUZ1 offers resistance options of 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating temperature range of the AD8403ARUZ1?
The device operates over an extended industrial temperature range of −40°C to +125°C.
- What is the supply voltage range for the AD8403ARUZ1?
The device supports single-supply operation from 2.7 V to 5.5 V.
- How many programmable positions does each channel of the AD8403ARUZ1 have?
Each channel has 256 programmable positions.
- What is the update data loading rate of the AD8403ARUZ1?
The update data loading rate is 10 MHz.
- What is the power shutdown current of the AD8403ARUZ1?
The power shutdown current is less than 5 μA.
- In what packages is the AD8403ARUZ1 available?
The device is available in 24-lead PDIP, SOIC, and TSSOP packages.
- Is the AD8403ARUZ1 suitable for automotive applications?
- What is the resistance temperature coefficient (tempco) of the AD8403ARUZ1?
The nominal resistance temperature coefficient is 500 ppm/°C.
