AD8402ARUZ100

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics: Dual Channel, 256-Position, Nonvolatile Memory
• Package: 16-Pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Provides a digitally controlled variable resistor function
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Resolution: 8 bits (256 steps)
• Supply Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +125°C
• End-to-End Resistance Range: 10kΩ
• Standby Current: 1μA (typical)
• Interface: Serial Peripheral Interface (SPI)

Detailed Pin Configuration

1. VDD: Power supply voltage
2. CS: Chip select input for SPI communication
3. SCLK: Serial clock input for SPI communication
4. SDI: Serial data input for SPI communication
5. SDO: Serial data output for SPI communication
6. GND: Ground
7. A1: Address bit 1 for channel selection
8. A0: Address bit 0 for channel selection
9. H/L: High/Low terminal of the potentiometer for Channel B
10. W: Wiper terminal of the potentiometer for Channel B
11. B: Low terminal of the potentiometer for Channel A
12. W: Wiper terminal of the potentiometer for Channel A
13. H: High terminal of the potentiometer for Channel A
14. NC: No connection
15. VLOGIC: Logic supply voltage
16. VSS: Negative power supply voltage

Functional Features

• Dual-channel digital potentiometer with nonvolatile memory
• Allows digital control of resistance in electronic circuits
• Provides 256 discrete steps for precise adjustment
• Nonvolatile memory stores wiper position during power-off
• Low standby current for power-saving applications
• SPI interface enables easy integration with microcontrollers

Advantages and Disadvantages

Advantages

• Precise and accurate resistance adjustment
• Nonvolatile memory ensures settings are retained
• Low power consumption in standby mode
• Compact package size for space-constrained designs
• Easy integration with microcontrollers

Disadvantages

• Limited resolution compared to higher-bit digital potentiometers
• Restricted end-to-end resistance range (10kΩ)

Working Principles

The AD8402ARUZ100 is a dual-channel digital potentiometer that utilizes nonvolatile memory to store the wiper position. It operates by digitally controlling the resistance between the high and low terminals using a 256-step resolution. The potentiometer's wiper terminal can be adjusted through the SPI interface, allowing precise resistance tuning in electronic circuits. The nonvolatile memory ensures that the wiper position is retained even when power is disconnected.

Detailed Application Field Plans

The AD8402ARUZ100 finds applications in various fields, including: 1. Audio Equipment: Volume control, tone adjustment 2. Industrial Automation: Calibration, signal conditioning 3. Test and Measurement Instruments: Programmable resistance loads, calibration tools 4. Communication Systems: Signal attenuation, impedance matching 5. Automotive Electronics: Climate control, motor speed control

Detailed and Complete Alternative Models

1. AD8400ARZ10 - Single-channel digital potentiometer, 10kΩ, 8-bit resolution
2. AD8403ARUZ50 - Quad-channel digital potentiometer, 50kΩ, 8-bit resolution
3. MCP41010-I/P - Single-channel digital potentiometer, 10kΩ, 8-bit resolution
4. MAX5481EUD+ - Dual-channel digital potentiometer, 100kΩ, 256-step resolution

(Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's datasheets for more options.)

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