Overview
The AD8403ARU10-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 provides electronic adjustment functions similar to mechanical potentiometers or variable resistors. The AD8403 specifically contains four independent variable resistors, available in 24-lead PDIP, SOIC, and TSSOP packages. It operates with a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for various applications, including battery-powered devices.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Nominal Resistance | RAB | TA = 25°C, Model: AD840XYY10 | 8 | 10 | 12 | kΩ |
| Resistance Tempco | ΔRAB/ΔT | VAB = VDD, Wiper = No Connect | 500 | ppm/°C | ||
| Wiper Resistance | RW | VDD = 5V, IW = VDD/RAB | 50 | 100 | Ω | |
| Wiper Resistance | RW | VDD = 3V, IW = VDD/RAB | 200 | Ω | ||
| Nominal Resistance Match | ΔR/RAB | CH 1 to CH 2, CH 3, or CH 4, VAB = VDD, TA = 25°C | 0.2 | 1 | % | |
| Operating Temperature Range | TA | -40 | 125 | °C | ||
| Supply Voltage Range | VDD | 2.7 | 5.5 | V |
Key Features
- Quad-channel, 256-position digitally controlled variable resistor (VR) device.
- Available in 24-lead PDIP, SOIC, and TSSOP packages.
- Single-supply operation from 2.7 V to 5.5 V, suitable for battery-powered applications.
- ±1% channel-to-channel matching tolerance.
- Nominal temperature coefficient of 500 ppm/°C.
- 3-wire, SPI-compatible serial data input with a 10 MHz update data loading rate).
- Power shutdown mode with less than 5 μA current consumption).
- Unique switching circuit to minimize high glitch inherent in traditional switched resistor designs).
Applications
- Mechanical potentiometer replacement).
- Programmable filters, delays, and time constants).
- Volume control and panning).
- Line impedance matching).
- Power supply adjustment).
- Automotive applications due to its extended industrial temperature range).
Q & A
- What is the AD8403ARU10-REEL used for?
The AD8403ARU10-REEL is used as a quad-channel, 256-position digitally controlled variable resistor (VR) device, replacing mechanical potentiometers in various applications.
- What are the available package types for the AD8403?
The AD8403 is available in 24-lead PDIP, SOIC, and TSSOP packages.
- What is the operating voltage range of the AD8403?
The AD8403 operates with a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the temperature coefficient of the AD8403?
The nominal temperature coefficient of the AD8403 is 500 ppm/°C.
- How many positions can the variable resistor be set to?
The variable resistor can be set to 256 positions.
- What is the channel-to-channel matching tolerance of the AD8403?
The channel-to-channel matching tolerance is ±1%.
- What is the power consumption in shutdown mode?
The power consumption in shutdown mode is less than 5 μA.
- What is the update data loading rate for the AD8403?
The update data loading rate is 10 MHz.
- Is the AD8403 suitable for automotive applications?
Yes, the AD8403 is qualified for automotive applications due to its extended industrial temperature range.
- What types of applications can the AD8403 be used in?
The AD8403 can be used in applications such as mechanical potentiometer replacement, programmable filters, volume control, line impedance matching, and power supply adjustment.
