Overview
The AD8403ARUZ10-REEL is a quad-channel, digitally controlled variable resistor (VR) device produced by Analog Devices Inc. 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, each offering 256 programmable positions. It is available in a 24-lead TSSOP package, making it suitable for various applications requiring precise and programmable resistance control.
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.
- Available in 24-lead TSSOP, SOIC, and PDIP packages.
- Programmable resistance between the A terminal and the wiper or the B terminal and the wiper.
- 3-wire, SPI-compatible serial data input with a 10 MHz update data loading rate.
- Single-supply operation from 2.7 V to 5.5 V.
- Low power shutdown current of less than 5 μA.
- Unique switching circuit to minimize high glitch and avoid make-before-break or break-before-make operation.
- Qualified for automotive applications and operates over the extended industrial temperature range of -40°C to +125°C.
Applications
- Mechanical potentiometer replacement.
- Programmable filters, delays, and time constants.
- Volume control and panning.
- Line impedance matching.
- Power supply adjustment.
Q & A
- What is the AD8403ARUZ10-REEL used for?
The AD8403ARUZ10-REEL is used as a quad-channel, digitally controlled variable resistor, replacing mechanical potentiometers in various applications.
- What are the available package types for the AD8403?
The AD8403 is available in 24-lead TSSOP, SOIC, and PDIP packages.
- What is the nominal resistance range of the AD8403ARUZ10?
The nominal resistance range for the AD8403ARUZ10 is 8 kΩ to 12 kΩ, with a nominal value of 10 kΩ.
- What is the operating temperature range of the AD8403?
The AD8403 operates over the extended industrial temperature range of -40°C to +125°C.
- What is the supply voltage range for the AD8403?
The supply voltage range for the AD8403 is from 2.7 V to 5.5 V.
- How many programmable positions does each variable resistor have?
Each variable resistor has 256 programmable positions.
- What is the interface type for the AD8403?
The AD8403 uses a 3-wire, SPI-compatible serial data input interface.
- What is the power shutdown current of the AD8403?
The power shutdown current is less than 5 μA.
- Is the AD8403 qualified for automotive applications?
Yes, the AD8403 is qualified for automotive applications.
- What is the resistance temperature coefficient (ΔRAB/ΔT) of the AD8403?
The resistance temperature coefficient is 500 ppm/°C.
