Overview
The AD8402ARU100-REEL, produced by Analog Devices Inc., is a dual-channel, 256-position, digitally controlled variable resistor (VR) device. This component is part of the AD8400/AD8402/AD8403 family, which provides electronic adjustment functions similar to mechanical potentiometers or variable resistors. The AD8402 specifically contains two independent variable resistors in a compact 14-lead TSSOP package, making it suitable for a variety of applications requiring precise and programmable resistance control.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Nominal Resistance | RAB | TA = 25°C, Model: AD840XYY100 | 70 | 100 | 130 | kΩ |
| Resistance Tempco | ΔRAB/ΔT | VAB = VDD, Wiper = No Connect | - | 500 | - | ppm/°C |
| Wiper Resistance | RW | VDD = 5V, IW = VDD/RAB | 50 | 100 | - | Ω |
| Nominal Resistance Match | ΔR/RAB | CH 1 to CH 2, VAB = VDD, TA = 25°C | 0.2 | 1 | - | % |
| Supply Voltage | VDD | - | 2.7 | 5.5 | V | |
| Operating Temperature | TA | - | -40 | 125 | °C | |
| Resolution | N | - | - | 8 Bits | - |
Key Features
- Dual-channel, 256-position digitally controlled variable resistor.
- Available in 14-lead TSSOP package.
- Single-supply operation from 2.7 V to 5.5 V.
- ±1% channel-to-channel matching tolerance.
- Resistance values of 1 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ.
- 3-wire, SPI-compatible serial data input.
- 10 MHz update data loading rate.
- Power shutdown current less than 5 μA.
- Qualified for automotive applications.
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 AD8402ARU100-REEL used for? The AD8402ARU100-REEL is used as a dual-channel, digitally controlled variable resistor, replacing mechanical potentiometers in various applications.
- What are the available resistance values for the AD8402? The AD8402 offers resistance values of 1 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ.
- What is the operating temperature range of the AD8402? The AD8402 operates over an extended industrial temperature range of −40°C to +125°C.
- What is the supply voltage range for the AD8402? The AD8402 operates with a single-supply voltage from 2.7 V to 5.5 V.
- What is the resolution of the AD8402? The AD8402 has an 8-bit resolution, providing 256 positions.
- Is the AD8402 suitable for automotive applications? Yes, the AD8402 is qualified for automotive applications.
- What is the package type for the AD8402ARU100-REEL? The AD8402ARU100-REEL is available in a 14-lead TSSOP package.
- What is the typical wiper resistance of the AD8402? The typical wiper resistance is 100 Ω at VDD = 5V.
- How does the AD8402 handle power shutdown? The AD8402 has a power shutdown current of less than 5 μA.
- What is the data loading rate for the AD8402? The AD8402 has a data loading rate of up to 10 MHz.
