AD8402ARZ1

Product Overview

Category

AD8402ARZ1 belongs to the category of digital potentiometers.

Use

It is commonly used as a variable resistor in electronic circuits.

Characteristics

• Digital control interface
• Non-volatile memory for storing settings
• Low power consumption
• Wide operating voltage range
• High resolution

Package

AD8402ARZ1 comes in a small outline integrated circuit (SOIC) package.

Essence

The essence of AD8402ARZ1 lies in its ability to provide a digitally controlled variable resistance, allowing precise adjustment of electrical signals in various applications.

Packaging/Quantity

AD8402ARZ1 is typically packaged in reels and available in quantities of 2500 units per reel.

Specifications

• Resolution: 8 bits
• Number of Channels: 2
• Operating Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +125°C
• Interface: Serial Peripheral Interface (SPI)
• Resistance Tolerance: ±20%
• End-to-End Resistance Range: 10kΩ, 50kΩ, 100kΩ

Detailed Pin Configuration

AD8402ARZ1 has a total of 16 pins, which are assigned as follows:

1. VDD - Power supply voltage
2. CS - Chip select input
3. SCLK - Serial clock input
4. SDI - Serial data input
5. GND - Ground
6. RDAC1 - Terminal A of channel 1
7. RDAC2 - Terminal B of channel 1
8. AGND - Analog ground
9. VLOGIC - Logic supply voltage
10. RDAC3 - Terminal A of channel 2
11. RDAC4 - Terminal B of channel 2
12. VOUT1 - Output voltage of channel 1
13. VOUT2 - Output voltage of channel 2
14. NC - No connection
15. NC - No connection
16. VSS - Negative power supply voltage

Functional Features

• Digital control allows precise adjustment of resistance values.
• Non-volatile memory retains settings even when power is disconnected.
• SPI interface enables easy integration with microcontrollers and other digital devices.
• Wide operating voltage range makes it suitable for various applications.
• Low power consumption ensures energy efficiency.

Advantages and Disadvantages

Advantages

• Precise and accurate resistance adjustment.
• Non-volatile memory for storing settings.
• Easy integration with digital systems.
• Wide operating voltage range.
• Low power consumption.

Disadvantages

• Limited resolution (8 bits).
• Resistance tolerance of ±20% may not be suitable for highly precise applications.

Working Principles

AD8402ARZ1 utilizes a combination of digital control and analog circuitry to adjust the resistance between its terminals. The digital control interface allows users to send commands to set the desired resistance value. The internal circuitry then adjusts the resistance accordingly, providing a variable resistance that can be used in electronic circuits.

Detailed Application Field Plans

AD8402ARZ1 finds applications in various fields, including:

1. Audio Equipment: Used for volume control and tone adjustment in amplifiers, mixers, and audio processors.
2. Industrial Automation: Used for calibration and fine-tuning of sensors, actuators, and control systems.
3. Test and Measurement Instruments: Used for signal conditioning and calibration in oscilloscopes, function generators, and data acquisition systems.
4. Automotive Electronics: Used for controlling lighting intensity, motor speed, and other adjustable parameters in automotive systems.
5. Medical Devices: Used for precision control in medical equipment such as patient monitors and diagnostic devices.

Detailed and Complete Alternative Models

1. AD8400ARZ1: Single-channel digital potentiometer with similar specifications.
2. AD8403ARZ1: Three-channel digital potentiometer with similar specifications.
3. MCP4131-103E/P: Alternative digital potentiometer from Microchip Technology with comparable features.

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