Overview
The AD8403AR10-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 family and serves as a digital potentiometer, replacing traditional mechanical potentiometers or variable resistors. It is available in a 24-lead SOIC package and operates over an extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Nominal Resistance | 10 kΩ | kΩ |
| Number of Positions | 256 | - |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Update Data Loading Rate | 10 MHz | MHz |
| Power Shutdown Current | < 5 μA | μA |
| Resistance Tempco | 500 ppm/°C | ppm/°C |
| Wiper Resistance (VDD = 5V) | 50 - 100 Ω | Ω |
| Wiper Resistance (VDD = 3V) | 200 Ω | Ω |
| Channel-to-Channel Matching Tolerance | ±1% | % |
| Package Type | 24-Lead SOIC | - |
Key Features
- Quad-channel, 256-position digitally controlled variable resistor.
- Available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ nominal resistance options.
- 3-wire, SPI-compatible serial data input.
- Power shutdown feature with less than 5 μA current consumption.
- Single-supply operation from 2.7 V to 5.5 V.
- Extended industrial temperature range of −40°C to +125°C.
- Linear resistance variation with respect to the digital code.
- Low wiper resistance and high channel-to-channel matching tolerance.
Applications
- Mechanical potentiometer replacement.
- Programmable filters, delays, and time constants.
- Volume control and panning in audio systems.
- Line impedance matching.
- Power supply adjustment.
Q & A
- What is the AD8403AR10-REEL used for? The AD8403AR10-REEL is used as a digital potentiometer, replacing traditional mechanical potentiometers or variable resistors in various applications.
- What are the available nominal resistance options for the AD8403? The AD8403 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ nominal resistance options.
- What is the operating temperature range of the AD8403AR10-REEL? The operating temperature range is −40°C to +125°C.
- What is the power shutdown current of the AD8403AR10-REEL? The power shutdown current is less than 5 μA.
- What is the update data loading rate of the AD8403AR10-REEL? The update data loading rate is 10 MHz.
- What type of serial interface does the AD8403AR10-REEL use? The AD8403AR10-REEL uses a 3-wire, SPI-compatible serial data input.
- What is the supply voltage range for the AD8403AR10-REEL? The supply voltage range is from 2.7 V to 5.5 V.
- How many positions does the AD8403AR10-REEL have? The AD8403AR10-REEL has 256 positions.
- What is the package type of the AD8403AR10-REEL? The package type is a 24-Lead SOIC.
- What are some common applications of the AD8403AR10-REEL? Common applications include mechanical potentiometer replacement, programmable filters, volume control, line impedance matching, and power supply adjustment.
