LE87281NQCT

Product Overview

Category: Integrated Circuit (IC)

Use: The LE87281NQCT is a high-performance digital signal processor designed for audio applications. It offers advanced processing capabilities and is commonly used in audio equipment such as amplifiers, mixers, and sound systems.

Characteristics: - High-speed processing - Low power consumption - Compact size - Wide operating voltage range

Package: The LE87281NQCT is available in a small outline integrated circuit (SOIC) package, which provides ease of installation and compatibility with standard PCB designs.

Essence: This IC is specifically designed to enhance audio signals by performing various digital signal processing functions, including filtering, equalization, and modulation.

Packaging/Quantity: The LE87281NQCT is typically sold in reels containing 250 units per reel.

Specifications

• Operating Voltage Range: 3.3V - 5V
• Clock Frequency: Up to 100 MHz
• Digital Signal Processing Resolution: 24-bit
• Number of Input/Output Channels: 4
• On-chip Memory: 256 KB
• Package Type: SOIC-16

Detailed Pin Configuration

The LE87281NQCT features a 16-pin configuration with the following pin assignments:

1. VDD: Power supply voltage input
2. GND: Ground reference
3. RESET: Reset control input
4. CLK: Clock input
5. DATA_IN: Serial data input
6. DATA_OUT: Serial data output
7. IRQ: Interrupt request output
8. MUTE: Mute control input
9. I/O1: Input/output channel 1
10. I/O2: Input/output channel 2
11. I/O3: Input/output channel 3
12. I/O4: Input/output channel 4
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

The LE87281NQCT offers the following functional features:

• Digital filtering: Provides various filter types (low-pass, high-pass, band-pass) for precise audio signal shaping.
• Equalization: Allows adjustment of frequency response to optimize audio output.
• Modulation: Supports modulation techniques such as amplitude modulation (AM) and frequency modulation (FM).
• Interrupt handling: Generates interrupt requests for efficient communication with external devices.
• Mute control: Enables muting of audio output when required.

Advantages and Disadvantages

Advantages: - High-speed processing capability ensures real-time audio signal manipulation. - Low power consumption contributes to energy-efficient designs. - Compact size allows integration into space-constrained applications. - Wide operating voltage range provides flexibility in different power supply configurations.

Disadvantages: - Limited number of input/output channels may restrict complex audio processing setups. - Lack of built-in audio codecs may require additional components for audio encoding/decoding.

Working Principles

The LE87281NQCT operates based on digital signal processing principles. It receives audio signals through the input channels, performs various processing operations such as filtering and equalization, and generates processed audio output through the output channels. The internal memory stores program instructions and data required for signal processing operations.

Detailed Application Field Plans

The LE87281NQCT finds applications in various audio-related fields, including: 1. Professional audio equipment: Used in amplifiers, mixers, and audio processors for live sound reinforcement and studio recording. 2. Consumer electronics: Integrated into home theater systems, soundbars, and portable audio devices for enhanced audio performance. 3. Automotive audio systems: Employed in car audio head units and amplifiers to deliver high-quality audio in vehicles. 4. Telecommunications: Utilized in teleconferencing systems and voice communication devices for improved audio clarity.

Detailed and Complete Alternative Models

1. LE87282NQCT: Similar to LE87281NQCT with additional input/output channels for more complex audio processing setups.
2. LE87283NQCT: Offers built-in audio codecs for direct audio encoding/decoding, eliminating the need for external components.
3. LE87284NQCT: Provides extended on-chip memory for storing larger audio processing algorithms and data.

These alternative models offer enhanced features and expanded capabilities compared to the LE87281NQCT, catering to specific application requirements.

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