Overview
The AD8403ARZ50-REEL, produced by Analog Devices Inc., is a 4-channel digital potentiometer that offers a versatile and programmable solution for various electronic adjustment needs. This device is part of the AD8400/AD8402/AD8403 series, which provides single-, dual-, or quad-channel digitally controlled variable resistors. The AD8403 specifically contains four independent variable resistors, each with 256 programmable positions, making it an ideal replacement for mechanical potentiometers or variable resistors.
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. The AD8403 is available in various packages, including 24-lead PDIP, SOIC, and TSSOP, making it suitable for a wide range of applications.
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 |
| Resistance Tempco (typ) | 500 | ppm/°C |
| Supply Voltage Range | 2.7 V to 5.5 V | V |
| Update Data Loading Rate | 10 MHz | |
| Power Shutdown Current | < 5 μA | μA |
| Package Types | 24-lead PDIP, SOIC, TSSOP | |
| RoHS Compliance | Compliant |
Key Features
- 256-position digitally controlled variable resistor with linear resistance variation.
- Available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistance options.
- 3-wire SPI-compatible serial data input for easy programming.
- 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.
- Unique switching circuit to minimize high glitch and avoid make-before-break or break-before-make operations.
- Extended industrial temperature range operation from -40°C to +125°C.
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 robust temperature range and reliability.
Q & A
- What is the AD8403ARZ50-REEL used for?
The AD8403ARZ50-REEL is a 4-channel digital potentiometer used to replace mechanical potentiometers or variable resistors in various electronic applications.
- What are the available resistance options for the AD8403?
The AD8403 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistance options.
- What is the operating temperature range of the AD8403?
The AD8403 operates over an extended industrial temperature range of -40°C to +125°C.
- What is the supply voltage range for the AD8403?
The AD8403 supports single-supply operation from 2.7 V to 5.5 V.
- How many positions does the AD8403 have?
The AD8403 has 256 programmable positions for each channel.
- What is the update data loading rate of the AD8403?
The AD8403 has an update data loading rate of 10 MHz.
- Is the AD8403 RoHS compliant?
Yes, the AD8403 is RoHS compliant.
- What packages are available for the AD8403?
The AD8403 is available in 24-lead PDIP, SOIC, and TSSOP packages.
- What is the power shutdown current of the AD8403?
The AD8403 has a power shutdown current of less than 5 μA.
- What are some common applications of the AD8403?
Common applications include mechanical potentiometer replacement, programmable filters, volume control, line impedance matching, and power supply adjustment.
