CAT5111LI50

Basic Information Overview

• Category: Electronic Component
• Use: Digital Potentiometer
• Characteristics: Low-power, 50kΩ resistance, 256-tap resolution
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Adjustable resistor with digital control
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Resistance: 50kΩ
• Resolution: 256 taps
• Supply Voltage: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• Power Consumption: 2µA typical
• End-to-End Resistance Tolerance: ±20%
• Non-Volatile Memory: Yes
• Wiper Current: 3mA maximum

Detailed Pin Configuration

1. VCC: Supply voltage input
2. SDA: Serial data input/output
3. SCL: Serial clock input
4. A0: Address bit 0
5. A1: Address bit 1
6. WP: Write protect input
7. H/L: High/Low terminal of the potentiometer
8. GND: Ground reference

Functional Features

• Digital control allows precise adjustment of resistance
• Non-volatile memory retains settings even when power is removed
• Low power consumption extends battery life in portable devices
• Wide operating temperature range enables use in various environments
• Multiple address options for cascading multiple devices

Advantages

• Easy integration into existing circuits due to standard package
• High resolution provides fine-grained adjustment capability
• Non-volatile memory eliminates the need for reconfiguration on power-up
• Low power consumption reduces overall system energy requirements

Disadvantages

• Limited resistance tolerance may not be suitable for applications requiring high precision
• Single-channel configuration restricts simultaneous control of multiple resistances

Working Principles

The CAT5111LI50 is a digital potentiometer that replaces traditional mechanical potentiometers. It consists of a resistor network and a wiper that can be digitally controlled to vary the resistance between the high and low terminals. The digital control signals are received through the SDA and SCL pins, allowing precise adjustment of the resistance value.

Detailed Application Field Plans

• Audio Equipment: Volume control, tone adjustment
• Industrial Control Systems: Calibration, feedback control
• Test and Measurement Instruments: Fine-tuning, calibration
• Consumer Electronics: Brightness control, contrast adjustment

Detailed and Complete Alternative Models

• CAT5111WI50: Same specifications but in DIP (Dual Inline Package) format
• CAT5111ZI50: Same specifications with additional I2C interface compatibility

This concludes the encyclopedia entry for CAT5111LI50, a digital potentiometer widely used in various applications due to its adjustable resistance and digital control capabilities.

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