X9315WMIT2

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Potentiometer
• Characteristics: Non-volatile, 32 Taps, 10kΩ Resistance
• Package: SOIC-8
• Essence: Provides adjustable resistance in electronic circuits
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Resistance Range: 0Ω to 10kΩ
• Number of Taps: 32
• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Endurance: 100,000 write cycles
• Wiper Current: ±1mA
• Interface: Serial (SPI)

Detailed Pin Configuration

The X9315WMIT2 has a total of 8 pins arranged as follows:

┌───┬───┐ │ 1 │ 8 │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ 4 │ 5 │ └───┴───┘

Pin Description: 1. VCC: Supply Voltage 2. CS: Chip Select 3. SCK: Serial Clock 4. SI: Serial Data Input 5. SO: Serial Data Output 6. GND: Ground 7. NC: No Connection 8. W: Wiper Terminal

Functional Features

• Non-volatile memory stores wiper position during power-off
• 32 taps allow fine-grained adjustment of resistance
• SPI interface enables easy integration with microcontrollers
• Low power consumption for energy-efficient applications
• Wide operating temperature range for versatile usage

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures settings are retained even without power - Fine-grained adjustment allows precise resistance tuning - Easy integration with microcontrollers through the SPI interface - Low power consumption makes it suitable for battery-powered devices

Disadvantages: - Limited to 32 taps, may not provide enough granularity in some applications - Requires additional circuitry for voltage reference and control signals

Working Principles

The X9315WMIT2 is a digital potentiometer that replaces traditional mechanical potentiometers. It consists of a resistive ladder network and a wiper terminal. The position of the wiper determines the effective resistance between the wiper terminal and one end of the ladder.

The IC utilizes non-volatile memory to store the wiper position, ensuring that the resistance setting is maintained even when power is removed. This feature eliminates the need for manual readjustment upon power restoration.

The resistance value is adjusted by sending control signals through the SPI interface. The microcontroller communicates with the X9315WMIT2, instructing it to move the wiper up or down the ladder, thereby changing the resistance.

Detailed Application Field Plans

The X9315WMIT2 finds applications in various fields, including:

1. Audio Equipment: Allows volume control and tone adjustment.
2. Industrial Automation: Provides adjustable gain control in signal processing circuits.
3. Test and Measurement Instruments: Enables calibration and fine-tuning of equipment.
4. Automotive Electronics: Used for sensor calibration and control circuit adjustments.
5. Consumer Electronics: Offers adjustable parameters in electronic gadgets.

Alternative Models

1. X9C103S: 10kΩ, 100 Taps, DIP-8 package
2. MCP4017T: 10kΩ, 64 Taps, SOT-23 package
3. AD8400ARZ1: 10kΩ, 256 Taps, SOIC-8 package

These alternative models provide similar functionality to the X9315WMIT2 but may have different specifications and packaging options.

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