Overview
The AD8402ARZ50 from Analog Devices Inc. is a 2-channel digital potentiometer integrated circuit. This device is part of the AD8400/AD8402/AD8403 family, which provides single-, dual-, or quad-channel, 256-position digitally controlled variable resistors. The AD8402 specifically contains two independent variable resistors in a compact 14-lead SOIC package. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors, offering a programmable resistance value between the A terminal and the wiper or the B terminal and the wiper.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Resolution | 256 positions (8 bits) | |
| Resistor Values | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | |
| Integral Nonlinearity (INL) | −2 to +2 LSB | |
| Differential Nonlinearity (DNL) | −1 to +1 LSB | |
| Voltage Range | 2.7 V to 5.5 V | V |
| Operating Temperature | −40°C to +125°C | °C |
| Power Shutdown Current | < 5 μA | μA |
| Update Data Loading Rate | 10 MHz | Hz |
| Package Type | 14-Lead SOIC |
Key Features
- 3-wire, SPI-compatible serial data input
- Completely programmable resistance value between A terminal and wiper or B terminal and wiper
- Power shutdown mode with less than 5 μA current consumption
- Single-supply operation from 2.7 V to 5.5 V
- High update data loading rate of 10 MHz
- Guaranteed operation over the extended industrial temperature range of −40°C to +125°C
- Available in various packages including SOIC, PDIP, and TSSOP
Applications
- Mechanical potentiometer replacement
- Programmable filters, delays, and time constants
- Volume control and panning
- Line impedance matching
- Power supply adjustment
- Data acquisition applications
- Qualified for automotive applications
Q & A
- What is the AD8402ARZ50 used for?
The AD8402ARZ50 is used as a digital potentiometer, replacing mechanical potentiometers in various applications such as programmable filters, volume control, and power supply adjustment.
- How many channels does the AD8402ARZ50 have?
The AD8402ARZ50 has two independent channels.
- What are the available resistor values for the AD8402ARZ50?
The available resistor values are 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the resolution of the AD8402ARZ50?
The resolution is 256 positions, which is equivalent to 8 bits.
- What is the operating voltage range of the AD8402ARZ50?
The operating voltage range is from 2.7 V to 5.5 V.
- What is the power shutdown current of the AD8402ARZ50?
The power shutdown current is less than 5 μA.
- What is the update data loading rate of the AD8402ARZ50?
The update data loading rate is 10 MHz.
- In what packages is the AD8402ARZ50 available?
The AD8402ARZ50 is available in 14-lead SOIC, PDIP, and TSSOP packages.
- What is the operating temperature range of the AD8402ARZ50?
The operating temperature range is from −40°C to +125°C.
- Is the AD8402ARZ50 suitable for automotive applications?
Yes, the AD8402ARZ50 is qualified for automotive applications.
