Overview
The AD8402ARZ100-REEL, produced by Analog Devices Inc., is a 2-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 variable resistors. The AD8402 specifically contains two independent variable resistors in a compact 14-lead SOIC package. It operates as an electronic replacement for mechanical potentiometers or variable resistors, allowing for precise digital control over resistance values.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | - |
| Number of Positions | 256 | - |
| Resistor Values | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | - |
| Power Shutdown Current | < 5 μA | - |
| Serial Interface | 3-wire, SPI-compatible | - |
| Update Data Loading Rate | 10 MHz | - |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Operating Temperature Range | −40°C to +125°C | °C |
| Package Type | 14-Lead SOIC | - |
| Wiper Resistance | 50 Ω to 100 Ω (VDD = 5V), 200 Ω (VDD = 3V) | Ω |
| Nominal Resistance Match | ±1% channel-to-channel matching | % |
| Temperature Coefficient | 500 ppm/°C | ppm/°C |
Key Features
- Dual-channel, 256-position digitally controlled variable resistor.
- Replaces mechanical potentiometers or variable resistors with digital control.
- Available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistor values.
- Low power shutdown current of less than 5 μA.
- 3-wire, SPI-compatible serial interface for easy integration.
- High update data loading rate of 10 MHz.
- Single-supply operation from 2.7 V to 5.5 V.
- Extended industrial temperature range of −40°C to +125°C.
- Compact 14-lead SOIC package.
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 reliability.
Q & A
- What is the AD8402ARZ100-REEL used for?
The AD8402ARZ100-REEL is a 2-channel digital potentiometer used to replace mechanical potentiometers or variable resistors with digital control.
- What are the available resistor values for the AD8402ARZ100-REEL?
The available resistor values are 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the power shutdown current of the AD8402ARZ100-REEL?
The power shutdown current is less than 5 μA.
- What type of serial interface does the AD8402ARZ100-REEL use?
The device uses a 3-wire, SPI-compatible serial interface.
- What is the update data loading rate of the AD8402ARZ100-REEL?
The update data loading rate is 10 MHz.
- What is the operating temperature range of the AD8402ARZ100-REEL?
The operating temperature range is −40°C to +125°C.
- What package type is the AD8402ARZ100-REEL available in?
The device is available in a 14-lead SOIC package.
- What is the wiper resistance of the AD8402ARZ100-REEL?
The wiper resistance is 50 Ω to 100 Ω (VDD = 5V) and 200 Ω (VDD = 3V).
- What is the nominal resistance match between channels?
The nominal resistance match is ±1% channel-to-channel.
- What is the temperature coefficient of the AD8402ARZ100-REEL?
The temperature coefficient is 500 ppm/°C.
