Overview
The AD8403ARUZ1-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, which replaces traditional mechanical potentiometers or variable resistors with a digital interface. The AD8403 is available in 24-lead PDIP, SOIC, and TSSOP packages, making it versatile for various applications. It operates on a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for battery-powered devices and other low-voltage applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | - |
| Number of Positions | 256 | - |
| Resistor Values | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | - |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Power Shutdown Current | < 5 μA | A |
| Serial Interface | 3-Wire SPI-Compatible | - |
| Update Data Loading Rate | 10 MHz | Hz |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | 24-Lead TSSOP | - |
| Resistance Tempco | 500 ppm/°C | - |
| Wiper Resistance | 50 Ω to 200 Ω | Ω |
| Channel-to-Channel Matching Tolerance | ±1% | - |
Key Features
- Single, dual, or quad-channel configurations available, with the AD8403 offering four independent variable resistors.
- 256-position digitally controlled variable resistor, allowing for precise resistance adjustments.
- Operates on a single supply voltage from 2.7 V to 5.5 V, making it suitable for a wide range of applications, including battery-powered devices.
- 3-Wire SPI-Compatible serial data input for easy integration with microcontrollers.
- High update data loading rate of 10 MHz, enabling fast adjustments.
- Low power shutdown current of less than 5 μA, reducing power consumption in standby modes.
- High channel-to-channel matching tolerance of ±1%, ensuring consistent performance across channels.
- Resistance values available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ, catering to various application needs.
Applications
- Mechanical potentiometer replacement in various electronic systems.
- Programmable filters, delays, and time constants in signal processing circuits.
- Volume control and panning in audio systems.
- Line impedance matching in communication and audio circuits.
- Power supply adjustment in power management systems.
- Automotive applications due to its qualified temperature range and reliability.
Q & A
- What is the AD8403ARUZ1-REEL used for?
The AD8403ARUZ1-REEL is a quad-channel, 256-position digitally controlled variable resistor used to replace mechanical potentiometers or variable resistors in electronic circuits.
- What are the available resistor values for the AD8403?
The AD8403 is available with resistor values of 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating voltage range of the AD8403?
The AD8403 operates on a single supply voltage ranging from 2.7 V to 5.5 V.
- What type of serial interface does the AD8403 use?
The AD8403 uses a 3-Wire SPI-Compatible serial data input.
- What is the update data loading rate of the AD8403?
The update data loading rate of the AD8403 is 10 MHz.
- What is the power shutdown current of the AD8403?
The power shutdown current of the AD8403 is less than 5 μA.
- What is the operating temperature range of the AD8403?
The operating temperature range of the AD8403 is -40°C to +125°C.
- What package types are available for the AD8403?
The AD8403 is available in 24-lead PDIP, SOIC, and TSSOP packages.
- What is the resistance tempco of the AD8403?
The resistance tempco of the AD8403 is 500 ppm/°C.
- What are some common applications of the AD8403?
The AD8403 is commonly used in mechanical potentiometer replacement, programmable filters, volume control, line impedance matching, and power supply adjustment.
