AD8402ANZ10

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics: Dual Channel, 256-Position, Nonvolatile Memory
• Package: 24-Lead PDIP (Plastic Dual In-Line Package)
• Essence: Provides a digitally controlled variable resistor function
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Resolution: 8 bits (256 steps)
• Supply Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• End-to-End Resistance Range: 10kΩ
• Interface: Serial Peripheral Interface (SPI) compatible
• Nonvolatile Memory: Stores wiper position settings
• Power-On Reset: Returns wiper to midscale position on power-up

Detailed Pin Configuration

The AD8402ANZ10 has a total of 24 pins. The pin configuration is as follows:

1. VDD - Positive supply voltage
2. VSS - Ground reference
3. SDO - Serial Data Output
4. SDI - Serial Data Input
5. SCLK - Serial Clock Input
6. CS - Chip Select Input
7. H/L - High/Low terminal of Channel A
8. W - Wiper terminal of Channel A
9. L/H - Low/High terminal of Channel B
10. W - Wiper terminal of Channel B 11-24. NC - No Connection

Functional Features

• Dual-channel digital potentiometer with independent control for each channel
• Allows precise and programmable resistance adjustment
• Nonvolatile memory stores wiper positions, eliminating the need for reprogramming on power-up
• SPI interface enables easy integration with microcontrollers and other digital systems
• Power-on reset feature ensures the wiper returns to the midscale position on power-up

Advantages and Disadvantages

Advantages: - Provides precise resistance adjustment in various applications - Nonvolatile memory eliminates the need for constant reprogramming - Easy integration with digital systems through SPI interface

Disadvantages: - Limited resolution of 8 bits (256 steps) - Restricted end-to-end resistance range of 10kΩ

Working Principles

The AD8402ANZ10 is a digital potentiometer that functions as an electronically controlled variable resistor. It consists of two independent channels, each with a wiper terminal and high/low terminals. The resistance between the wiper and the high or low terminal determines the output resistance.

The device utilizes nonvolatile memory to store the wiper positions, allowing the potentiometer to retain its settings even after power loss. The serial peripheral interface (SPI) enables communication between the digital potentiometer and external microcontrollers or other digital systems.

Upon power-up, the AD8402ANZ10 performs a power-on reset, which sets the wiper position to the midscale value. This ensures consistent behavior when the device is initially powered.

Detailed Application Field Plans

The AD8402ANZ10 finds application in various fields, including:

1. Audio Systems: Volume control, tone adjustment, and equalization circuits.
2. Industrial Control: Precision control of motor speed, light intensity, and temperature.
3. Test and Measurement Equipment: Calibration and signal conditioning circuits.
4. Communication Systems: Signal attenuation and impedance matching circuits.
5. Medical Devices: Programmable resistance for patient monitoring and treatment equipment.

Detailed and Complete Alternative Models

1. AD8400: Single-channel digital potentiometer with similar specifications.
2. AD8403: Triple-channel digital potentiometer with similar specifications.
3. MCP4131: Single-channel digital potentiometer from Microchip with comparable features.
4. MAX5481: Dual-channel digital potentiometer from Maxim Integrated with extended resistance range.

(Note: The above list is not exhaustive and serves as an example of alternative models.)

This entry provides an overview of the AD8402ANZ10 digital potentiometer, including its basic information, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.